./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.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 f1d7dc9d 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/Ackermann03.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 c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd --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-f1d7dc9-m [2024-09-20 13:02:43,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:02:43,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:02:43,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:02:43,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:02:43,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:02:43,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:02:43,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:02:43,646 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:02:43,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:02:43,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:02:43,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:02:43,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:02:43,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:02:43,650 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:02:43,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:02:43,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:02:43,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:02:43,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:02:43,651 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:02:43,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:02:43,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:02:43,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:02:43,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:02:43,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:02:43,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:02:43,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:02:43,655 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:02:43,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:02:43,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:02:43,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:02:43,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:02:43,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:02:43,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:02:43,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:02:43,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:02:43,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:02:43,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:02:43,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:02:43,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:02:43,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:02:43,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:02:43,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 13:02:43,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:02:43,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:02:43,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:02:43,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:02:43,945 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:02:43,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann03.c [2024-09-20 13:02:45,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:02:45,577 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:02:45,578 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c [2024-09-20 13:02:45,588 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/745513664/ab977cb07569461782e1cd72bc16fc9e/FLAG1035a1130 [2024-09-20 13:02:45,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/745513664/ab977cb07569461782e1cd72bc16fc9e [2024-09-20 13:02:45,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:02:45,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 13:02:45,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:02:45,979 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:02:45,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:02:45,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:45" (1/1) ... [2024-09-20 13:02:45,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c07d060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:45, skipping insertion in model container [2024-09-20 13:02:45,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:45" (1/1) ... [2024-09-20 13:02:46,010 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:02:46,161 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/Ackermann03.c[1168,1181] [2024-09-20 13:02:46,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:02:46,176 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 13:02:46,191 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/Ackermann03.c[1168,1181] [2024-09-20 13:02:46,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:02:46,204 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:02:46,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46 WrapperNode [2024-09-20 13:02:46,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:02:46,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:02:46,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:02:46,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:02:46,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,221 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 13:02:46,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:02:46,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:02:46,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:02:46,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:02:46,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,245 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]. [2024-09-20 13:02:46,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:02:46,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:02:46,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:02:46,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:02:46,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (1/1) ... [2024-09-20 13:02:46,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:02:46,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:02:46,287 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) [2024-09-20 13:02:46,293 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 [2024-09-20 13:02:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:02:46,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 13:02:46,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 13:02:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:02:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:02:46,337 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-20 13:02:46,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-20 13:02:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 13:02:46,339 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 13:02:46,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:02:46,405 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:02:46,408 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:02:46,683 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-20 13:02:46,685 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:02:46,710 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:02:46,710 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 13:02:46,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:46 BoogieIcfgContainer [2024-09-20 13:02:46,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:02:46,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:02:46,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:02:46,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:02:46,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:02:45" (1/3) ... [2024-09-20 13:02:46,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703809e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:46, skipping insertion in model container [2024-09-20 13:02:46,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:46" (2/3) ... [2024-09-20 13:02:46,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703809e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:46, skipping insertion in model container [2024-09-20 13:02:46,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:46" (3/3) ... [2024-09-20 13:02:46,721 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2024-09-20 13:02:46,737 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:02:46,737 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 13:02:46,802 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:02:46,809 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;@42ab4b5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:02:46,809 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 13:02:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:02:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 13:02:46,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:02:46,821 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:02:46,822 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:02:46,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2113269736, now seen corresponding path program 1 times [2024-09-20 13:02:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:02:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754327837] [2024-09-20 13:02:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:46,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:02:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:02:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:02:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:02:47,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:02:47,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754327837] [2024-09-20 13:02:47,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754327837] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:02:47,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:02:47,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:02:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152400260] [2024-09-20 13:02:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:02:47,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:02:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:02:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:02:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:02:47,190 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 13:02:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:02:47,364 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-09-20 13:02:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:02:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-20 13:02:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:02:47,374 INFO L225 Difference]: With dead ends: 55 [2024-09-20 13:02:47,374 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 13:02:47,378 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:02:47,381 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:02:47,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:02:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 13:02:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-20 13:02:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-20 13:02:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-20 13:02:47,424 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-20 13:02:47,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:02:47,424 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-20 13:02:47,424 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 13:02:47,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-20 13:02:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 13:02:47,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:02:47,427 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:02:47,428 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:02:47,428 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:02:47,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:47,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2051125499, now seen corresponding path program 1 times [2024-09-20 13:02:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:02:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643156785] [2024-09-20 13:02:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:47,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:02:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:02:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:02:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:02:47,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:02:47,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643156785] [2024-09-20 13:02:47,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643156785] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:02:47,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775466493] [2024-09-20 13:02:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:47,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:47,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:02:47,588 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) [2024-09-20 13:02:47,590 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:02:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:47,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-20 13:02:47,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:02:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:02:47,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:02:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:02:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775466493] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:02:47,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:02:47,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-20 13:02:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140987928] [2024-09-20 13:02:47,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:02:47,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 13:02:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:02:47,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 13:02:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:02:47,854 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-20 13:02:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:02:48,102 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-09-20 13:02:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 13:02:48,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 22 [2024-09-20 13:02:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:02:48,106 INFO L225 Difference]: With dead ends: 83 [2024-09-20 13:02:48,106 INFO L226 Difference]: Without dead ends: 59 [2024-09-20 13:02:48,107 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-20 13:02:48,111 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:02:48,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 119 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:02:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-20 13:02:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-09-20 13:02:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (28), 13 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-20 13:02:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-09-20 13:02:48,133 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 22 [2024-09-20 13:02:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:02:48,133 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-09-20 13:02:48,134 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-20 13:02:48,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-09-20 13:02:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-20 13:02:48,137 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:02:48,137 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:02:48,155 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:02:48,338 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:48,339 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:02:48,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:48,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113567, now seen corresponding path program 1 times [2024-09-20 13:02:48,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:02:48,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697789152] [2024-09-20 13:02:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:48,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:02:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:02:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:02:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:02:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-20 13:02:48,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:02:48,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697789152] [2024-09-20 13:02:48,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697789152] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:02:48,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710928821] [2024-09-20 13:02:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:48,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:02:48,759 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) [2024-09-20 13:02:48,761 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:02:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:48,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:02:48,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:02:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-20 13:02:48,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:02:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-20 13:02:49,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710928821] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:02:49,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:02:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-20 13:02:49,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142474109] [2024-09-20 13:02:49,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:02:49,518 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 13:02:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:02:49,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 13:02:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:02:49,521 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-20 13:02:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:02:49,661 INFO L93 Difference]: Finished difference Result 123 states and 230 transitions. [2024-09-20 13:02:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:02:49,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2024-09-20 13:02:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:02:49,664 INFO L225 Difference]: With dead ends: 123 [2024-09-20 13:02:49,667 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 13:02:49,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:02:49,674 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:02:49,674 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 85 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:02:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 13:02:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-20 13:02:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-20 13:02:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-20 13:02:49,695 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 48 [2024-09-20 13:02:49,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:02:49,697 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-20 13:02:49,697 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-20 13:02:49,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:49,697 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-20 13:02:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-20 13:02:49,702 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:02:49,703 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:02:49,720 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:02:49,906 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:49,907 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:02:49,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash 732471144, now seen corresponding path program 2 times [2024-09-20 13:02:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:02:49,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529314393] [2024-09-20 13:02:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:02:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:02:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:02:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:02:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 13:02:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-20 13:02:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:02:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529314393] [2024-09-20 13:02:50,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529314393] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:02:50,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919842178] [2024-09-20 13:02:50,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:02:50,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:50,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:02:50,630 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) [2024-09-20 13:02:50,632 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:02:50,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:02:50,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:02:50,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-20 13:02:50,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:02:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-20 13:02:50,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:02:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-20 13:02:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919842178] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:02:52,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:02:52,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-20 13:02:52,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734220461] [2024-09-20 13:02:52,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:02:52,365 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 13:02:52,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:02:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 13:02:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-20 13:02:52,369 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-20 13:02:52,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:02:52,849 INFO L93 Difference]: Finished difference Result 122 states and 225 transitions. [2024-09-20 13:02:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 13:02:52,850 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) Word has length 82 [2024-09-20 13:02:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:02:52,853 INFO L225 Difference]: With dead ends: 122 [2024-09-20 13:02:52,853 INFO L226 Difference]: Without dead ends: 74 [2024-09-20 13:02:52,854 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 13:02:52,855 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:02:52,855 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 193 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:02:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-20 13:02:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-09-20 13:02:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (25), 12 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-20 13:02:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-20 13:02:52,875 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 82 [2024-09-20 13:02:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:02:52,875 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-20 13:02:52,875 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-20 13:02:52,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-20 13:02:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-20 13:02:52,879 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:02:52,879 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:02:52,896 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 13:02:53,080 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:53,081 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:02:53,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1096714260, now seen corresponding path program 3 times [2024-09-20 13:02:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:02:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093548956] [2024-09-20 13:02:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:53,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:02:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:02:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:02:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:02:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 13:02:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 157 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-09-20 13:02:53,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:02:53,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093548956] [2024-09-20 13:02:53,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093548956] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:02:53,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738022985] [2024-09-20 13:02:53,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:02:53,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:02:53,812 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) [2024-09-20 13:02:53,813 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:02:53,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-20 13:02:53,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:02:53,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 13:02:53,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:02:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-20 13:02:53,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:02:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-20 13:02:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738022985] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:02:55,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:02:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 15] total 28 [2024-09-20 13:02:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733454282] [2024-09-20 13:02:55,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:02:55,121 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 13:02:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:02:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 13:02:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-09-20 13:02:55,123 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-20 13:02:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:02:55,650 INFO L93 Difference]: Finished difference Result 122 states and 209 transitions. [2024-09-20 13:02:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-20 13:02:55,652 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 108 [2024-09-20 13:02:55,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:02:55,654 INFO L225 Difference]: With dead ends: 122 [2024-09-20 13:02:55,654 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 13:02:55,660 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 13:02:55,661 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 13:02:55,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 240 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 13:02:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 13:02:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-20 13:02:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-20 13:02:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-09-20 13:02:55,688 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 108 [2024-09-20 13:02:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:02:55,689 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-09-20 13:02:55,690 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-20 13:02:55,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-09-20 13:02:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-09-20 13:02:55,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:02:55,699 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 20, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:02:55,712 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 13:02:55,899 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:55,900 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:02:55,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:02:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1260803800, now seen corresponding path program 4 times [2024-09-20 13:02:55,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:02:55,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209631555] [2024-09-20 13:02:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:02:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:02:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:02:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:02:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:02:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:02:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 13:02:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 13:02:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:02:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:02:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:02:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:02:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 13:02:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 13:02:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:02:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 219 proven. 706 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2024-09-20 13:02:56,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:02:56,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209631555] [2024-09-20 13:02:56,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209631555] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:02:56,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487168793] [2024-09-20 13:02:56,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 13:02:56,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:02:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:02:56,924 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) [2024-09-20 13:02:56,925 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:02:57,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 13:02:57,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:02:57,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 13:02:57,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:02:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 282 proven. 646 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2024-09-20 13:02:57,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:02:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 284 proven. 692 refuted. 0 times theorem prover too weak. 1646 trivial. 0 not checked. [2024-09-20 13:02:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487168793] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:02:59,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:02:59,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 11] total 27 [2024-09-20 13:02:59,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952212935] [2024-09-20 13:02:59,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:02:59,443 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-20 13:02:59,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:02:59,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-20 13:02:59,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2024-09-20 13:02:59,445 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-20 13:03:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:03:00,606 INFO L93 Difference]: Finished difference Result 198 states and 405 transitions. [2024-09-20 13:03:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-20 13:03:00,607 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) Word has length 227 [2024-09-20 13:03:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:03:00,609 INFO L225 Difference]: With dead ends: 198 [2024-09-20 13:03:00,609 INFO L226 Difference]: Without dead ends: 73 [2024-09-20 13:03:00,613 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 504 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1247, Invalid=5073, Unknown=0, NotChecked=0, Total=6320 [2024-09-20 13:03:00,613 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 13:03:00,614 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 266 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 13:03:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-20 13:03:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2024-09-20 13:03:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-20 13:03:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2024-09-20 13:03:00,628 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 227 [2024-09-20 13:03:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:03:00,629 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2024-09-20 13:03:00,629 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 24 states have internal predecessors, (79), 15 states have call successors, (25), 1 states have call predecessors, (25), 13 states have return successors, (36), 16 states have call predecessors, (36), 15 states have call successors, (36) [2024-09-20 13:03:00,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2024-09-20 13:03:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-20 13:03:00,631 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:03:00,632 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:03:00,648 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 13:03:00,835 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 13:03:00,836 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:03:00,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1720213164, now seen corresponding path program 5 times [2024-09-20 13:03:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:03:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398962001] [2024-09-20 13:03:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:03:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:03:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:03:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:03:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:03:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 13:03:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-20 13:03:01,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:03:01,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398962001] [2024-09-20 13:03:01,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398962001] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:03:01,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138312939] [2024-09-20 13:03:01,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 13:03:01,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:01,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:03:01,896 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) [2024-09-20 13:03:01,899 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:03:02,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-20 13:03:02,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:03:02,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-20 13:03:02,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:03:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-20 13:03:02,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:03:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-20 13:03:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138312939] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:03:05,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:03:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-20 13:03:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629348077] [2024-09-20 13:03:05,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:03:05,956 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 13:03:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:03:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 13:03:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 13:03:05,958 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-20 13:03:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:03:06,605 INFO L93 Difference]: Finished difference Result 143 states and 184 transitions. [2024-09-20 13:03:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-20 13:03:06,605 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) Word has length 160 [2024-09-20 13:03:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:03:06,607 INFO L225 Difference]: With dead ends: 143 [2024-09-20 13:03:06,607 INFO L226 Difference]: Without dead ends: 86 [2024-09-20 13:03:06,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 342 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=816, Invalid=3606, Unknown=0, NotChecked=0, Total=4422 [2024-09-20 13:03:06,610 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 13:03:06,610 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 350 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 13:03:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-09-20 13:03:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2024-09-20 13:03:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 46 states have internal predecessors, (51), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (23), 16 states have call predecessors, (23), 12 states have call successors, (23) [2024-09-20 13:03:06,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2024-09-20 13:03:06,628 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 160 [2024-09-20 13:03:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:03:06,628 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2024-09-20 13:03:06,629 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-20 13:03:06,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2024-09-20 13:03:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-20 13:03:06,633 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:03:06,633 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:03:06,651 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 13:03:06,833 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:06,834 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:03:06,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1618887262, now seen corresponding path program 6 times [2024-09-20 13:03:06,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:03:06,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843444862] [2024-09-20 13:03:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:03:06,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:03:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:03:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:03:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:03:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 13:03:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:03:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-20 13:03:07,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:03:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843444862] [2024-09-20 13:03:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843444862] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:03:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308204540] [2024-09-20 13:03:07,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 13:03:07,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:07,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:03:07,994 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) [2024-09-20 13:03:07,996 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 13:03:08,204 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-20 13:03:08,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:03:08,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-20 13:03:08,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:03:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-20 13:03:08,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:03:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-20 13:03:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308204540] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:03:12,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:03:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-20 13:03:12,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460762742] [2024-09-20 13:03:12,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:03:12,106 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 13:03:12,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:03:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 13:03:12,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 13:03:12,107 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-20 13:03:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:03:12,733 INFO L93 Difference]: Finished difference Result 161 states and 212 transitions. [2024-09-20 13:03:12,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-20 13:03:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 173 [2024-09-20 13:03:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:03:12,736 INFO L225 Difference]: With dead ends: 161 [2024-09-20 13:03:12,736 INFO L226 Difference]: Without dead ends: 99 [2024-09-20 13:03:12,738 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 371 SyntacticMatches, 19 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=928, Invalid=3764, Unknown=0, NotChecked=0, Total=4692 [2024-09-20 13:03:12,739 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 41 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 13:03:12,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 293 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 13:03:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-20 13:03:12,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2024-09-20 13:03:12,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.125) internal successors, (54), 49 states have internal predecessors, (54), 14 states have call successors, (14), 7 states have call predecessors, (14), 12 states have return successors, (27), 18 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-20 13:03:12,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2024-09-20 13:03:12,757 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 173 [2024-09-20 13:03:12,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:03:12,758 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2024-09-20 13:03:12,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-20 13:03:12,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2024-09-20 13:03:12,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-20 13:03:12,761 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:03:12,761 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:03:12,780 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-20 13:03:12,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:12,961 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:03:12,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1288512238, now seen corresponding path program 7 times [2024-09-20 13:03:12,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:03:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215441088] [2024-09-20 13:03:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:03:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:03:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:03:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:03:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:03:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 13:03:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:13,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:03:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 13:03:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-20 13:03:14,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:03:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215441088] [2024-09-20 13:03:14,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215441088] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:03:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114896967] [2024-09-20 13:03:14,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 13:03:14,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:14,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:03:14,325 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) [2024-09-20 13:03:14,326 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 13:03:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:14,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-20 13:03:14,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:03:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-20 13:03:14,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:03:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-20 13:03:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114896967] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:03:15,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:03:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2024-09-20 13:03:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447390838] [2024-09-20 13:03:15,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:03:15,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 13:03:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:03:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 13:03:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 13:03:15,689 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-20 13:03:18,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:03:18,009 INFO L93 Difference]: Finished difference Result 149 states and 200 transitions. [2024-09-20 13:03:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-20 13:03:18,010 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) Word has length 186 [2024-09-20 13:03:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:03:18,012 INFO L225 Difference]: With dead ends: 149 [2024-09-20 13:03:18,012 INFO L226 Difference]: Without dead ends: 133 [2024-09-20 13:03:18,014 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=883, Invalid=6257, Unknown=0, NotChecked=0, Total=7140 [2024-09-20 13:03:18,014 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 169 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:03:18,015 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 608 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-20 13:03:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-20 13:03:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 89. [2024-09-20 13:03:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 58 states have internal predecessors, (65), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (38), 22 states have call predecessors, (38), 16 states have call successors, (38) [2024-09-20 13:03:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2024-09-20 13:03:18,043 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 186 [2024-09-20 13:03:18,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:03:18,043 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2024-09-20 13:03:18,044 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 29 states have internal predecessors, (56), 6 states have call successors, (11), 1 states have call predecessors, (11), 14 states have return successors, (23), 13 states have call predecessors, (23), 6 states have call successors, (23) [2024-09-20 13:03:18,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2024-09-20 13:03:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-09-20 13:03:18,048 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:03:18,048 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:03:18,066 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 13:03:18,248 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:18,248 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:03:18,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash 296710076, now seen corresponding path program 8 times [2024-09-20 13:03:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:03:18,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603741914] [2024-09-20 13:03:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:03:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:03:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:03:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:03:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:03:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:18,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 13:03:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:03:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 13:03:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 13:03:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:19,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 664 proven. 533 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2024-09-20 13:03:19,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:03:19,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603741914] [2024-09-20 13:03:19,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603741914] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:03:19,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245480664] [2024-09-20 13:03:19,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:03:19,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:19,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:03:19,612 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) [2024-09-20 13:03:19,612 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 13:03:19,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:03:19,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:03:19,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-20 13:03:19,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:03:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2024-09-20 13:03:19,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:03:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-09-20 13:03:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245480664] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:03:24,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:03:24,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 32] total 39 [2024-09-20 13:03:24,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149591686] [2024-09-20 13:03:24,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:03:24,753 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-20 13:03:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:03:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-20 13:03:24,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 13:03:24,754 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-20 13:03:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:03:25,428 INFO L93 Difference]: Finished difference Result 211 states and 289 transitions. [2024-09-20 13:03:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-20 13:03:25,428 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) Word has length 199 [2024-09-20 13:03:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:03:25,430 INFO L225 Difference]: With dead ends: 211 [2024-09-20 13:03:25,430 INFO L226 Difference]: Without dead ends: 130 [2024-09-20 13:03:25,432 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 427 SyntacticMatches, 21 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-09-20 13:03:25,432 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 13:03:25,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 407 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 13:03:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-20 13:03:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2024-09-20 13:03:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 61 states have internal predecessors, (67), 18 states have call successors, (18), 8 states have call predecessors, (18), 15 states have return successors, (40), 24 states have call predecessors, (40), 17 states have call successors, (40) [2024-09-20 13:03:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2024-09-20 13:03:25,456 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 199 [2024-09-20 13:03:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:03:25,456 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2024-09-20 13:03:25,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 35 states have internal predecessors, (97), 21 states have call successors, (26), 1 states have call predecessors, (26), 20 states have return successors, (46), 18 states have call predecessors, (46), 21 states have call successors, (46) [2024-09-20 13:03:25,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2024-09-20 13:03:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-20 13:03:25,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:03:25,458 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:03:25,476 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 13:03:25,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-20 13:03:25,659 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:03:25,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash 62516586, now seen corresponding path program 9 times [2024-09-20 13:03:25,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:03:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491939312] [2024-09-20 13:03:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:03:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:03:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:25,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:03:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:25,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:03:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:03:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:03:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 13:03:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:03:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 13:03:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 13:03:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 267 proven. 793 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2024-09-20 13:03:26,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:03:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491939312] [2024-09-20 13:03:26,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491939312] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:03:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672206588] [2024-09-20 13:03:26,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:03:26,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:03:26,558 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:03:26,559 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 13:03:26,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-20 13:03:26,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:03:26,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-20 13:03:26,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:03:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-20 13:03:26,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:03:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2024-09-20 13:03:29,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672206588] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:03:29,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:03:29,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2024-09-20 13:03:29,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950076708] [2024-09-20 13:03:29,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:03:29,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 13:03:29,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:03:29,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 13:03:29,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-09-20 13:03:29,017 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-20 13:03:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:03:29,327 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2024-09-20 13:03:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 13:03:29,328 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) Word has length 212 [2024-09-20 13:03:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:03:29,331 INFO L225 Difference]: With dead ends: 186 [2024-09-20 13:03:29,331 INFO L226 Difference]: Without dead ends: 100 [2024-09-20 13:03:29,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 467 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 13:03:29,333 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:03:29,333 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 299 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:03:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-09-20 13:03:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2024-09-20 13:03:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 58 states have internal predecessors, (64), 17 states have call successors, (17), 8 states have call predecessors, (17), 14 states have return successors, (31), 22 states have call predecessors, (31), 16 states have call successors, (31) [2024-09-20 13:03:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2024-09-20 13:03:29,358 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 212 [2024-09-20 13:03:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:03:29,361 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2024-09-20 13:03:29,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9642857142857144) internal successors, (83), 25 states have internal predecessors, (83), 16 states have call successors, (24), 2 states have call predecessors, (24), 14 states have return successors, (37), 13 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-20 13:03:29,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2024-09-20 13:03:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-20 13:03:29,363 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:03:29,363 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 23, 19, 18, 18, 18, 18, 18, 18, 18, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:03:29,382 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-20 13:03:29,564 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 13:03:29,564 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:03:29,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1614501087, now seen corresponding path program 10 times [2024-09-20 13:03:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:03:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871232884] [2024-09-20 13:03:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:03:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:03:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:29,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:03:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:29,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-20 13:03:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:29,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:29,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 13:03:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 13:03:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:03:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 13:03:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 13:03:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:03:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 13:03:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 13:03:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 13:03:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 13:03:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 13:03:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 13:03:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:03:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 519 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2024-09-20 13:03:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:03:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871232884] [2024-09-20 13:03:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871232884] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:03:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974289577] [2024-09-20 13:03:30,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 13:03:30,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:30,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:03:30,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:03:30,222 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 13:03:30,537 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 13:03:30,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:03:30,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:03:30,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:03:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 507 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2024-09-20 13:03:30,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:03:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 234 proven. 522 refuted. 0 times theorem prover too weak. 3573 trivial. 0 not checked. [2024-09-20 13:03:31,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974289577] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:03:31,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:03:31,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 15 [2024-09-20 13:03:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711679579] [2024-09-20 13:03:31,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:03:31,357 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 13:03:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:03:31,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 13:03:31,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-09-20 13:03:31,358 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-20 13:03:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:03:31,491 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2024-09-20 13:03:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 13:03:31,491 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) Word has length 284 [2024-09-20 13:03:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:03:31,492 INFO L225 Difference]: With dead ends: 92 [2024-09-20 13:03:31,493 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:03:31,493 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 642 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2024-09-20 13:03:31,494 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:03:31,494 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 139 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:03:31,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:03:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:03:31,495 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) [2024-09-20 13:03:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:03:31,495 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 284 [2024-09-20 13:03:31,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:03:31,495 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:03:31,496 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (19), 7 states have call predecessors, (19), 11 states have call successors, (19) [2024-09-20 13:03:31,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:03:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:03:31,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:03:31,499 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 13:03:31,517 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-20 13:03:31,700 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:03:31,703 INFO L408 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2024-09-20 13:03:31,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 13:04:06,307 WARN L293 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 225 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-20 13:04:26,066 WARN L293 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 210 DAG size of output: 291 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-20 13:04:37,976 WARN L293 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 206 DAG size of output: 279 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-20 13:04:43,715 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:04:43,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:04:43 BoogieIcfgContainer [2024-09-20 13:04:43,745 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:04:43,746 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 13:04:43,746 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 13:04:43,746 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 13:04:43,746 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:46" (3/4) ... [2024-09-20 13:04:43,748 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 13:04:43,786 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 13:04:43,786 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 13:04:43,787 INFO L158 Benchmark]: Toolchain (without parser) took 117809.41ms. Allocated memory was 153.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 84.0MB in the beginning and 527.3MB in the end (delta: -443.2MB). Peak memory consumption was 633.1MB. Max. memory is 16.1GB. [2024-09-20 13:04:43,787 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:04:43,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.80ms. Allocated memory is still 153.1MB. Free memory was 83.8MB in the beginning and 72.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 13:04:43,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.98ms. Allocated memory is still 153.1MB. Free memory was 72.6MB in the beginning and 71.7MB in the end (delta: 908.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:04:43,788 INFO L158 Benchmark]: Boogie Preprocessor took 30.18ms. Allocated memory is still 153.1MB. Free memory was 71.7MB in the beginning and 69.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:04:43,788 INFO L158 Benchmark]: RCFGBuilder took 457.92ms. Allocated memory is still 153.1MB. Free memory was 69.9MB in the beginning and 119.2MB in the end (delta: -49.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 13:04:43,789 INFO L158 Benchmark]: TraceAbstraction took 117031.88ms. Allocated memory was 153.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 118.6MB in the beginning and 530.4MB in the end (delta: -411.8MB). Peak memory consumption was 753.1MB. Max. memory is 16.1GB. [2024-09-20 13:04:43,789 INFO L158 Benchmark]: Witness Printer took 40.79ms. Allocated memory is still 1.2GB. Free memory was 529.4MB in the beginning and 527.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:04:43,790 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.80ms. Allocated memory is still 153.1MB. Free memory was 83.8MB in the beginning and 72.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.98ms. Allocated memory is still 153.1MB. Free memory was 72.6MB in the beginning and 71.7MB in the end (delta: 908.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.18ms. Allocated memory is still 153.1MB. Free memory was 71.7MB in the beginning and 69.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 457.92ms. Allocated memory is still 153.1MB. Free memory was 69.9MB in the beginning and 119.2MB in the end (delta: -49.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 117031.88ms. Allocated memory was 153.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 118.6MB in the beginning and 530.4MB in the end (delta: -411.8MB). Peak memory consumption was 753.1MB. Max. memory is 16.1GB. * Witness Printer took 40.79ms. Allocated memory is still 1.2GB. Free memory was 529.4MB in the beginning and 527.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.9s, OverallIterations: 12, TraceHistogramMax: 42, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 612 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 558 mSDsluCounter, 3083 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2713 mSDsCounter, 719 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7290 IncrementalHoareTripleChecker+Invalid, 8009 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 719 mSolverCounterUnsat, 370 mSDtfsCounter, 7290 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4363 GetRequests, 3743 SyntacticMatches, 92 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7587 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=10, InterpolantAutomatonStates: 332, 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, 12 MinimizatonAttempts, 172 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 32.3s InterpolantComputationTime, 3417 NumberOfCodeBlocks, 3277 NumberOfCodeBlocksAsserted, 83 NumberOfCheckSat, 5084 ConstructedInterpolants, 0 QuantifiedInterpolants, 9354 SizeOfPredicates, 48 NumberOfNonLiveVariables, 4685 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 34 InterpolantComputations, 1 PerfectInterpolantSequences, 39778/49815 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: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((((((((((((((((\result == 5) && (\old(n) == 3)) || (((\result == 3) && (\old(n) == 1)) && (\old(m) == 1))) || (\old(m) == 0)) || (((2 <= \old(m)) && (3 <= \old(n))) && (5 <= \result))) || (((\old(n) == 0) && (\result == 2)) && (\old(m) == 1))) || (((2 <= \old(m)) && (2 <= \old(n))) && (\result == 7))) || ((\result == 5) && (\old(n) == 1))) || (((\result == 7) && (5 <= \old(n))) && (\old(m) == 1))) || (((\old(n) == 0) && (2 <= \old(m))) && (\result == 3))) || ((\result == 6) && (\old(n) == 4))) || (((5 <= \result) && (6 <= \old(n))) && (\old(m) == 1))) || (((\result == 4) && (\old(n) == 2)) && (\old(m) == 1))) || ((3 <= \old(m)) && (3 <= \result))) && ((0 < \old(m)) || (\result == ((long long) \old(n) + 1)))) && (((((\result == 3) && (\old(m) == 1)) || (1 < \old(m))) || (\result == 2)) || (\old(n) != 1))) && (((\old(m) == 0) || (\old(n) == 0)) || (0 < \old(n)))) RESULT: Ultimate proved your program to be correct! [2024-09-20 13:04:43,817 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE