./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_7-1.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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 16:40:56,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:40:56,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:40:56,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:40:56,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:40:57,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:40:57,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:40:57,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:40:57,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:40:57,031 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:40:57,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:40:57,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:40:57,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:40:57,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:40:57,033 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:40:57,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:40:57,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:40:57,034 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:40:57,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:40:57,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:40:57,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:40:57,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:40:57,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:40:57,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:40:57,036 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:40:57,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:40:57,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:40:57,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:40:57,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:40:57,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:40:57,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:40:57,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:40:57,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:40:57,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:40:57,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:40:57,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:40:57,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:40:57,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:40:57,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:40:57,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:40:57,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:40:57,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:40:57,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:40:57,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:40:57,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:40:57,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:40:57,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:40:57,331 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:40:57,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-09-18 16:40:58,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:40:58,986 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:40:58,986 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-09-18 16:40:58,995 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/eca091209/2cd5ec6d78ba4c349cacd8aff19f56fc/FLAG0c3b86b44 [2024-09-18 16:40:59,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/eca091209/2cd5ec6d78ba4c349cacd8aff19f56fc [2024-09-18 16:40:59,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:40:59,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:40:59,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:40:59,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:40:59,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:40:59,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58637ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59, skipping insertion in model container [2024-09-18 16:40:59,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,039 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:40:59,181 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2024-09-18 16:40:59,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:40:59,197 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:40:59,210 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_7-1.c[741,754] [2024-09-18 16:40:59,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:40:59,226 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:40:59,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59 WrapperNode [2024-09-18 16:40:59,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:40:59,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:40:59,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:40:59,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:40:59,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,274 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:40:59,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:40:59,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:40:59,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:40:59,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:40:59,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,310 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-18 16:40:59,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:40:59,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:40:59,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:40:59,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:40:59,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (1/1) ... [2024-09-18 16:40:59,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:40:59,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:40:59,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-18 16:40:59,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-18 16:40:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:40:59,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:40:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:40:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:40:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:40:59,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:40:59,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:40:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:40:59,410 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-09-18 16:40:59,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-09-18 16:40:59,476 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:40:59,479 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:40:59,594 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-18 16:40:59,594 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:40:59,611 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:40:59,611 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 16:40:59,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:40:59 BoogieIcfgContainer [2024-09-18 16:40:59,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:40:59,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:40:59,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:40:59,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:40:59,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:40:59" (1/3) ... [2024-09-18 16:40:59,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b182801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:40:59, skipping insertion in model container [2024-09-18 16:40:59,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:40:59" (2/3) ... [2024-09-18 16:40:59,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b182801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:40:59, skipping insertion in model container [2024-09-18 16:40:59,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:40:59" (3/3) ... [2024-09-18 16:40:59,619 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2024-09-18 16:40:59,633 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:40:59,633 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:40:59,690 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:40:59,697 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;@7309eb87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:40:59,698 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:40:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-18 16:40:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-18 16:40:59,710 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:40:59,711 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:40:59,712 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:40:59,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:40:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash 358193300, now seen corresponding path program 1 times [2024-09-18 16:40:59,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:40:59,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897913876] [2024-09-18 16:40:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:40:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:40:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:59,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:40:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:59,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:40:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:40:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:40:59,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:40:59,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897913876] [2024-09-18 16:40:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897913876] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:40:59,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:40:59,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:40:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182355065] [2024-09-18 16:40:59,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:40:59,999 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:41:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:41:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:41:00,019 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 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) [2024-09-18 16:41:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:00,093 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-09-18 16:41:00,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 16:41:00,096 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 [2024-09-18 16:41:00,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:00,103 INFO L225 Difference]: With dead ends: 35 [2024-09-18 16:41:00,103 INFO L226 Difference]: Without dead ends: 23 [2024-09-18 16:41:00,106 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 [2024-09-18 16:41:00,110 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:00,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-18 16:41:00,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-18 16:41:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-18 16:41:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-18 16:41:00,161 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2024-09-18 16:41:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:00,162 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-18 16:41:00,162 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) [2024-09-18 16:41:00,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-18 16:41:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-18 16:41:00,164 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:00,164 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:00,165 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:41:00,165 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:00,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1069801351, now seen corresponding path program 1 times [2024-09-18 16:41:00,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:00,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155724464] [2024-09-18 16:41:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:00,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:41:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155724464] [2024-09-18 16:41:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155724464] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:41:00,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:41:00,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:41:00,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754439232] [2024-09-18 16:41:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:41:00,276 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:41:00,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:00,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:41:00,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:41:00,277 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-18 16:41:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:00,344 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-09-18 16:41:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 16:41:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 14 [2024-09-18 16:41:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:00,346 INFO L225 Difference]: With dead ends: 27 [2024-09-18 16:41:00,346 INFO L226 Difference]: Without dead ends: 23 [2024-09-18 16:41:00,347 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 [2024-09-18 16:41:00,348 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:00,348 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-18 16:41:00,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-18 16:41:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-18 16:41:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-18 16:41:00,357 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2024-09-18 16:41:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:00,357 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-18 16:41:00,357 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-18 16:41:00,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-18 16:41:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-18 16:41:00,359 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:00,359 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:00,359 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 16:41:00,359 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:00,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash -648535868, now seen corresponding path program 1 times [2024-09-18 16:41:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391777955] [2024-09-18 16:41:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-18 16:41:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 16:41:00,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391777955] [2024-09-18 16:41:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391777955] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888178544] [2024-09-18 16:41:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:00,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:00,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:00,600 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:41:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:00,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-18 16:41:00,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 16:41:00,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-18 16:41:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888178544] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:00,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-09-18 16:41:00,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214866433] [2024-09-18 16:41:00,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:00,996 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-18 16:41:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-18 16:41:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-18 16:41:00,998 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-18 16:41:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:01,119 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-09-18 16:41:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 16:41:01,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-18 16:41:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:01,121 INFO L225 Difference]: With dead ends: 38 [2024-09-18 16:41:01,121 INFO L226 Difference]: Without dead ends: 23 [2024-09-18 16:41:01,122 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-18 16:41:01,123 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:01,124 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:01,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-18 16:41:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-18 16:41:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-18 16:41:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-18 16:41:01,133 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2024-09-18 16:41:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:01,134 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-18 16:41:01,134 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-18 16:41:01,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-18 16:41:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-18 16:41:01,137 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:01,137 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:01,154 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-18 16:41:01,341 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 [2024-09-18 16:41:01,342 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:01,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1169471199, now seen corresponding path program 1 times [2024-09-18 16:41:01,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:01,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284663889] [2024-09-18 16:41:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:01,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:01,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:01,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:01,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-18 16:41:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284663889] [2024-09-18 16:41:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284663889] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614970281] [2024-09-18 16:41:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:01,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:01,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:01,505 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:41:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:01,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-18 16:41:01,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-18 16:41:01,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-18 16:41:01,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614970281] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:01,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:01,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-18 16:41:01,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962741092] [2024-09-18 16:41:01,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:01,796 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-18 16:41:01,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:01,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-18 16:41:01,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-18 16:41:01,797 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-18 16:41:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:01,924 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-09-18 16:41:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 16:41:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-18 16:41:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:01,926 INFO L225 Difference]: With dead ends: 41 [2024-09-18 16:41:01,926 INFO L226 Difference]: Without dead ends: 37 [2024-09-18 16:41:01,927 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-09-18 16:41:01,927 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:01,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 83 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-18 16:41:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-18 16:41:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2024-09-18 16:41:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-09-18 16:41:01,940 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2024-09-18 16:41:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:01,940 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-09-18 16:41:01,940 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-18 16:41:01,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:01,941 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-09-18 16:41:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-18 16:41:01,942 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:01,942 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:01,955 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 16:41:02,142 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 [2024-09-18 16:41:02,143 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:02,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 413055705, now seen corresponding path program 2 times [2024-09-18 16:41:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:02,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490049247] [2024-09-18 16:41:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:02,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:02,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:02,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:02,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:02,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:02,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:02,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-18 16:41:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:02,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490049247] [2024-09-18 16:41:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490049247] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:02,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467120590] [2024-09-18 16:41:02,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:41:02,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:02,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:02,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:02,345 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 16:41:02,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:41:02,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:02,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-18 16:41:02,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-18 16:41:02,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-18 16:41:02,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467120590] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:02,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:02,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2024-09-18 16:41:02,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736832221] [2024-09-18 16:41:02,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:02,885 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-18 16:41:02,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-18 16:41:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-09-18 16:41:02,887 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-18 16:41:03,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:03,051 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2024-09-18 16:41:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 16:41:03,052 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 40 [2024-09-18 16:41:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:03,053 INFO L225 Difference]: With dead ends: 72 [2024-09-18 16:41:03,054 INFO L226 Difference]: Without dead ends: 41 [2024-09-18 16:41:03,054 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-09-18 16:41:03,055 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:03,056 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 91 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:03,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-18 16:41:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-18 16:41:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-18 16:41:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-18 16:41:03,064 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2024-09-18 16:41:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:03,065 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-18 16:41:03,065 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-18 16:41:03,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:03,066 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-18 16:41:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-18 16:41:03,067 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:03,067 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:03,086 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-18 16:41:03,271 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 [2024-09-18 16:41:03,272 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:03,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash -926093039, now seen corresponding path program 3 times [2024-09-18 16:41:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:03,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865483001] [2024-09-18 16:41:03,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-18 16:41:03,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865483001] [2024-09-18 16:41:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865483001] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:03,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185247393] [2024-09-18 16:41:03,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:41:03,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:03,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:03,643 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 16:41:03,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-18 16:41:03,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:03,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-18 16:41:03,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-18 16:41:03,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-18 16:41:04,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185247393] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:04,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:04,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 16 [2024-09-18 16:41:04,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104975784] [2024-09-18 16:41:04,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:04,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-18 16:41:04,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:04,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-18 16:41:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-09-18 16:41:04,110 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-18 16:41:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:04,297 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2024-09-18 16:41:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 16:41:04,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 68 [2024-09-18 16:41:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:04,303 INFO L225 Difference]: With dead ends: 83 [2024-09-18 16:41:04,304 INFO L226 Difference]: Without dead ends: 79 [2024-09-18 16:41:04,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-09-18 16:41:04,305 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:04,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 109 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-18 16:41:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-09-18 16:41:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 46 states have internal predecessors, (54), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (32), 18 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-18 16:41:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-09-18 16:41:04,326 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 68 [2024-09-18 16:41:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:04,327 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-09-18 16:41:04,327 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-18 16:41:04,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-09-18 16:41:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-18 16:41:04,330 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:04,330 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:04,347 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 16:41:04,530 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 [2024-09-18 16:41:04,531 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:04,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:04,531 INFO L85 PathProgramCache]: Analyzing trace with hash -257182465, now seen corresponding path program 4 times [2024-09-18 16:41:04,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:04,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862178679] [2024-09-18 16:41:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:04,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:05,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:05,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-09-18 16:41:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862178679] [2024-09-18 16:41:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862178679] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743021709] [2024-09-18 16:41:05,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:41:05,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:05,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:05,007 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) [2024-09-18 16:41:05,009 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 16:41:05,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:41:05,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:05,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-18 16:41:05,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-09-18 16:41:05,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-09-18 16:41:05,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743021709] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:05,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:05,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 20 [2024-09-18 16:41:05,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455526306] [2024-09-18 16:41:05,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:05,982 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-18 16:41:05,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-18 16:41:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-18 16:41:05,984 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (20), 1 states have call predecessors, (20), 6 states have return successors, (25), 10 states have call predecessors, (25), 17 states have call successors, (25) [2024-09-18 16:41:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:06,178 INFO L93 Difference]: Finished difference Result 150 states and 231 transitions. [2024-09-18 16:41:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 16:41:06,179 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (20), 1 states have call predecessors, (20), 6 states have return successors, (25), 10 states have call predecessors, (25), 17 states have call successors, (25) Word has length 109 [2024-09-18 16:41:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:06,182 INFO L225 Difference]: With dead ends: 150 [2024-09-18 16:41:06,183 INFO L226 Difference]: Without dead ends: 146 [2024-09-18 16:41:06,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2024-09-18 16:41:06,184 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 58 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:06,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 110 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:41:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-18 16:41:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 137. [2024-09-18 16:41:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 86 states have internal predecessors, (102), 31 states have call successors, (31), 12 states have call predecessors, (31), 18 states have return successors, (81), 38 states have call predecessors, (81), 30 states have call successors, (81) [2024-09-18 16:41:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 214 transitions. [2024-09-18 16:41:06,208 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 214 transitions. Word has length 109 [2024-09-18 16:41:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:06,209 INFO L474 AbstractCegarLoop]: Abstraction has 137 states and 214 transitions. [2024-09-18 16:41:06,209 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (20), 1 states have call predecessors, (20), 6 states have return successors, (25), 10 states have call predecessors, (25), 17 states have call successors, (25) [2024-09-18 16:41:06,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 214 transitions. [2024-09-18 16:41:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-18 16:41:06,212 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:06,213 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:06,229 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 16:41:06,413 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 [2024-09-18 16:41:06,413 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:06,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2056076178, now seen corresponding path program 5 times [2024-09-18 16:41:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:06,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088568938] [2024-09-18 16:41:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:06,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:06,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:06,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:06,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 16:41:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 403 proven. 706 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2024-09-18 16:41:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088568938] [2024-09-18 16:41:07,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088568938] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444959487] [2024-09-18 16:41:07,399 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 16:41:07,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:07,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:07,401 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) [2024-09-18 16:41:07,403 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 16:41:07,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-09-18 16:41:07,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:07,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-18 16:41:07,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 630 proven. 586 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-09-18 16:41:07,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 634 proven. 619 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2024-09-18 16:41:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444959487] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:09,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:09,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 21] total 33 [2024-09-18 16:41:09,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139227445] [2024-09-18 16:41:09,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:09,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-18 16:41:09,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-18 16:41:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2024-09-18 16:41:09,336 INFO L87 Difference]: Start difference. First operand 137 states and 214 transitions. Second operand has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (33), 1 states have call predecessors, (33), 12 states have return successors, (43), 20 states have call predecessors, (43), 25 states have call successors, (43) [2024-09-18 16:41:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:09,787 INFO L93 Difference]: Finished difference Result 229 states and 428 transitions. [2024-09-18 16:41:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-18 16:41:09,788 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (33), 1 states have call predecessors, (33), 12 states have return successors, (43), 20 states have call predecessors, (43), 25 states have call successors, (43) Word has length 218 [2024-09-18 16:41:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:09,793 INFO L225 Difference]: With dead ends: 229 [2024-09-18 16:41:09,793 INFO L226 Difference]: Without dead ends: 101 [2024-09-18 16:41:09,799 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 478 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=641, Invalid=1909, Unknown=0, NotChecked=0, Total=2550 [2024-09-18 16:41:09,800 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:09,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 204 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 16:41:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-18 16:41:09,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2024-09-18 16:41:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 17 states have call successors, (17), 14 states have call predecessors, (17), 9 states have return successors, (37), 14 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-18 16:41:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2024-09-18 16:41:09,822 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 218 [2024-09-18 16:41:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:09,823 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2024-09-18 16:41:09,823 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (33), 1 states have call predecessors, (33), 12 states have return successors, (43), 20 states have call predecessors, (43), 25 states have call successors, (43) [2024-09-18 16:41:09,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:09,824 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2024-09-18 16:41:09,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-09-18 16:41:09,827 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:09,828 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:09,845 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-18 16:41:10,028 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 [2024-09-18 16:41:10,029 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:10,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1181858135, now seen corresponding path program 6 times [2024-09-18 16:41:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497338194] [2024-09-18 16:41:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:10,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:11,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:11,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:12,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:12,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:12,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 16:41:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 16:41:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-09-18 16:41:13,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497338194] [2024-09-18 16:41:13,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497338194] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061480527] [2024-09-18 16:41:13,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 16:41:13,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:13,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:13,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:13,875 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 16:41:14,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2024-09-18 16:41:14,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:14,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-09-18 16:41:14,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-09-18 16:41:14,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-09-18 16:41:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061480527] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:15,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:15,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-09-18 16:41:15,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319961071] [2024-09-18 16:41:15,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:15,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-18 16:41:15,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-18 16:41:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-18 16:41:15,873 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (19), 19 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-18 16:41:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:16,170 INFO L93 Difference]: Finished difference Result 108 states and 158 transitions. [2024-09-18 16:41:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-18 16:41:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (19), 19 states have call predecessors, (19), 6 states have call successors, (19) Word has length 286 [2024-09-18 16:41:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:16,173 INFO L225 Difference]: With dead ends: 108 [2024-09-18 16:41:16,173 INFO L226 Difference]: Without dead ends: 104 [2024-09-18 16:41:16,174 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-18 16:41:16,174 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:16,175 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 803 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 16:41:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-18 16:41:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2024-09-18 16:41:16,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 64 states have internal predecessors, (68), 19 states have call successors, (19), 14 states have call predecessors, (19), 11 states have return successors, (55), 18 states have call predecessors, (55), 18 states have call successors, (55) [2024-09-18 16:41:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2024-09-18 16:41:16,191 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 286 [2024-09-18 16:41:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:16,192 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2024-09-18 16:41:16,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (19), 19 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-18 16:41:16,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2024-09-18 16:41:16,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-09-18 16:41:16,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:16,197 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:16,215 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-18 16:41:16,401 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:16,402 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:16,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2079867300, now seen corresponding path program 7 times [2024-09-18 16:41:16,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:16,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770836677] [2024-09-18 16:41:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:16,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:16,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:16,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:16,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 16:41:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 16:41:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 16:41:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 844 proven. 1612 refuted. 0 times theorem prover too weak. 4664 trivial. 0 not checked. [2024-09-18 16:41:17,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770836677] [2024-09-18 16:41:17,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770836677] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:17,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895665748] [2024-09-18 16:41:17,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 16:41:17,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:17,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:17,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:17,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 16:41:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:17,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-18 16:41:17,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1111 proven. 600 refuted. 0 times theorem prover too weak. 5409 trivial. 0 not checked. [2024-09-18 16:41:17,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1111 proven. 651 refuted. 0 times theorem prover too weak. 5358 trivial. 0 not checked. [2024-09-18 16:41:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895665748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:20,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:20,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 11, 17] total 35 [2024-09-18 16:41:20,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993342723] [2024-09-18 16:41:20,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:20,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-18 16:41:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-18 16:41:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2024-09-18 16:41:20,017 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (44), 25 states have call predecessors, (44), 24 states have call successors, (44) [2024-09-18 16:41:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:20,616 INFO L93 Difference]: Finished difference Result 230 states and 452 transitions. [2024-09-18 16:41:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-18 16:41:20,617 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (44), 25 states have call predecessors, (44), 24 states have call successors, (44) Word has length 354 [2024-09-18 16:41:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:20,619 INFO L225 Difference]: With dead ends: 230 [2024-09-18 16:41:20,619 INFO L226 Difference]: Without dead ends: 127 [2024-09-18 16:41:20,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 794 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=759, Invalid=2547, Unknown=0, NotChecked=0, Total=3306 [2024-09-18 16:41:20,623 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 165 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:20,624 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 209 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 16:41:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-18 16:41:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2024-09-18 16:41:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 23 states have call successors, (23), 18 states have call predecessors, (23), 11 states have return successors, (47), 18 states have call predecessors, (47), 22 states have call successors, (47) [2024-09-18 16:41:20,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2024-09-18 16:41:20,663 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 354 [2024-09-18 16:41:20,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:20,664 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2024-09-18 16:41:20,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (44), 25 states have call predecessors, (44), 24 states have call successors, (44) [2024-09-18 16:41:20,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:20,665 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2024-09-18 16:41:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-09-18 16:41:20,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:20,671 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:20,689 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-18 16:41:20,872 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:20,872 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:20,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1239419108, now seen corresponding path program 8 times [2024-09-18 16:41:20,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:20,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252058063] [2024-09-18 16:41:20,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:20,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 16:41:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 16:41:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 16:41:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 16:41:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-18 16:41:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-18 16:41:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-18 16:41:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 16:41:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 913 proven. 1281 refuted. 0 times theorem prover too weak. 4926 trivial. 0 not checked. [2024-09-18 16:41:21,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:21,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252058063] [2024-09-18 16:41:21,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252058063] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:21,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015631553] [2024-09-18 16:41:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:41:21,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:21,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:21,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:21,993 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-18 16:41:22,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:41:22,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:22,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-18 16:41:22,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1507 refuted. 0 times theorem prover too weak. 5194 trivial. 0 not checked. [2024-09-18 16:41:22,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1577 refuted. 0 times theorem prover too weak. 5124 trivial. 0 not checked. [2024-09-18 16:41:24,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015631553] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:24,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 19] total 33 [2024-09-18 16:41:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937607288] [2024-09-18 16:41:24,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:24,785 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-18 16:41:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-18 16:41:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2024-09-18 16:41:24,791 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (44), 20 states have call predecessors, (44), 26 states have call successors, (44) [2024-09-18 16:41:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:25,190 INFO L93 Difference]: Finished difference Result 214 states and 297 transitions. [2024-09-18 16:41:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-18 16:41:25,191 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (44), 20 states have call predecessors, (44), 26 states have call successors, (44) Word has length 354 [2024-09-18 16:41:25,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:25,192 INFO L225 Difference]: With dead ends: 214 [2024-09-18 16:41:25,192 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 16:41:25,194 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 792 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=469, Invalid=1423, Unknown=0, NotChecked=0, Total=1892 [2024-09-18 16:41:25,196 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 54 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:25,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 236 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 16:41:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 16:41:25,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 16:41:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-18 16:41:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 16:41:25,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 354 [2024-09-18 16:41:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:25,198 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 16:41:25,198 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (44), 20 states have call predecessors, (44), 26 states have call successors, (44) [2024-09-18 16:41:25,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 16:41:25,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 16:41:25,201 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 16:41:25,219 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-18 16:41:25,401 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-18 16:41:25,406 INFO L408 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2024-09-18 16:41:25,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 16:41:27,670 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 16:41:27,695 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-18 16:41:27,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:41:27 BoogieIcfgContainer [2024-09-18 16:41:27,698 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 16:41:27,699 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 16:41:27,699 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 16:41:27,699 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 16:41:27,699 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:40:59" (3/4) ... [2024-09-18 16:41:27,701 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 16:41:27,754 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 16:41:27,755 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 16:41:27,755 INFO L158 Benchmark]: Toolchain (without parser) took 28743.61ms. Allocated memory was 167.8MB in the beginning and 541.1MB in the end (delta: 373.3MB). Free memory was 100.8MB in the beginning and 453.7MB in the end (delta: -352.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2024-09-18 16:41:27,756 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 104.9MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:41:27,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.26ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 89.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 16:41:27,756 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.21ms. Allocated memory is still 167.8MB. Free memory was 89.6MB in the beginning and 142.1MB in the end (delta: -52.4MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-09-18 16:41:27,756 INFO L158 Benchmark]: Boogie Preprocessor took 42.15ms. Allocated memory is still 167.8MB. Free memory was 142.1MB in the beginning and 140.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:41:27,757 INFO L158 Benchmark]: RCFGBuilder took 294.62ms. Allocated memory is still 167.8MB. Free memory was 140.2MB in the beginning and 129.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 16:41:27,757 INFO L158 Benchmark]: TraceAbstraction took 28084.12ms. Allocated memory was 167.8MB in the beginning and 541.1MB in the end (delta: 373.3MB). Free memory was 128.3MB in the beginning and 456.8MB in the end (delta: -328.5MB). Peak memory consumption was 314.5MB. Max. memory is 16.1GB. [2024-09-18 16:41:27,758 INFO L158 Benchmark]: Witness Printer took 56.35ms. Allocated memory is still 541.1MB. Free memory was 455.8MB in the beginning and 453.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:41:27,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 104.9MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.26ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 89.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.21ms. Allocated memory is still 167.8MB. Free memory was 89.6MB in the beginning and 142.1MB in the end (delta: -52.4MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.15ms. Allocated memory is still 167.8MB. Free memory was 142.1MB in the beginning and 140.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 294.62ms. Allocated memory is still 167.8MB. Free memory was 140.2MB in the beginning and 129.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 28084.12ms. Allocated memory was 167.8MB in the beginning and 541.1MB in the end (delta: 373.3MB). Free memory was 128.3MB in the beginning and 456.8MB in the end (delta: -328.5MB). Peak memory consumption was 314.5MB. Max. memory is 16.1GB. * Witness Printer took 56.35ms. Allocated memory is still 541.1MB. Free memory was 455.8MB in the beginning and 453.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 29]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.7s, OverallIterations: 11, TraceHistogramMax: 51, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 567 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 515 mSDsluCounter, 1989 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1708 mSDsCounter, 537 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2691 IncrementalHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 537 mSolverCounterUnsat, 281 mSDtfsCounter, 2691 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3668 GetRequests, 3370 SyntacticMatches, 42 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=7, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 54 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 2991 NumberOfCodeBlocks, 2908 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 4444 ConstructedInterpolants, 0 QuantifiedInterpolants, 7930 SizeOfPredicates, 33 NumberOfNonLiveVariables, 3230 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 52070/66657 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: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Ensures: ((0 < \old(n)) || (\result == 0)) RESULT: Ultimate proved your program to be correct! [2024-09-18 16:41:27,791 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE