./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann03.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 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 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 20:23:59,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 20:23:59,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 20:23:59,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 20:23:59,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 20:23:59,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 20:23:59,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 20:23:59,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 20:23:59,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 20:23:59,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 20:23:59,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 20:23:59,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 20:23:59,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 20:23:59,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 20:23:59,354 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 20:23:59,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 20:23:59,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 20:23:59,355 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 20:23:59,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 20:23:59,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 20:23:59,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 20:23:59,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 20:23:59,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 20:23:59,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 20:23:59,357 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 20:23:59,358 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 20:23:59,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 20:23:59,358 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 20:23:59,358 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 20:23:59,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 20:23:59,359 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 20:23:59,359 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 20:23:59,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:23:59,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 20:23:59,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 20:23:59,360 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 20:23:59,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 20:23:59,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 20:23:59,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 20:23:59,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 20:23:59,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 20:23:59,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 20:23:59,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c244f72db2906c596b7f122d769fc1464836d7d05d9227ee4269773d59ed10bd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 20:23:59,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 20:23:59,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 20:23:59,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 20:23:59,578 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 20:23:59,578 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 20:23:59,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann03.c [2024-09-11 20:24:00,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 20:24:00,949 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 20:24:00,949 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c [2024-09-11 20:24:00,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/50b2c2d32/d400fc8a0efc47c58edc69adc11dafae/FLAGa5548df31 [2024-09-11 20:24:00,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/50b2c2d32/d400fc8a0efc47c58edc69adc11dafae [2024-09-11 20:24:00,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 20:24:00,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 20:24:00,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:00,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 20:24:00,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 20:24:00,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:00" (1/1) ... [2024-09-11 20:24:00,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39398779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:00, skipping insertion in model container [2024-09-11 20:24:00,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:24:00" (1/1) ... [2024-09-11 20:24:00,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 20:24:01,107 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2024-09-11 20:24:01,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:01,125 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 20:24:01,136 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann03.c[1168,1181] [2024-09-11 20:24:01,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 20:24:01,151 INFO L204 MainTranslator]: Completed translation [2024-09-11 20:24:01,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01 WrapperNode [2024-09-11 20:24:01,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 20:24:01,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:01,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 20:24:01,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 20:24:01,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,175 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-09-11 20:24:01,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 20:24:01,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 20:24:01,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 20:24:01,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 20:24:01,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,188 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,199 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]. [2024-09-11 20:24:01,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 20:24:01,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 20:24:01,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 20:24:01,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 20:24:01,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (1/1) ... [2024-09-11 20:24:01,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 20:24:01,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:01,241 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) [2024-09-11 20:24:01,242 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 [2024-09-11 20:24:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 20:24:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 20:24:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 20:24:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-11 20:24:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-11 20:24:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 20:24:01,324 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 20:24:01,326 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 20:24:01,414 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-11 20:24:01,415 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 20:24:01,437 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 20:24:01,437 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-11 20:24:01,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:01 BoogieIcfgContainer [2024-09-11 20:24:01,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 20:24:01,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 20:24:01,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 20:24:01,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 20:24:01,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:24:00" (1/3) ... [2024-09-11 20:24:01,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c9e5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:01, skipping insertion in model container [2024-09-11 20:24:01,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:24:01" (2/3) ... [2024-09-11 20:24:01,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c9e5b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:24:01, skipping insertion in model container [2024-09-11 20:24:01,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:01" (3/3) ... [2024-09-11 20:24:01,449 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2024-09-11 20:24:01,464 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 20:24:01,464 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 20:24:01,545 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 20:24:01,570 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;@2630cda2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 20:24:01,571 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 20:24:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-11 20:24:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-11 20:24:01,585 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:01,586 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:01,587 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:01,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1538870455, now seen corresponding path program 1 times [2024-09-11 20:24:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675132983] [2024-09-11 20:24:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:01,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 20:24:01,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675132983] [2024-09-11 20:24:01,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675132983] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 20:24:01,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 20:24:01,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-11 20:24:01,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893537673] [2024-09-11 20:24:01,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 20:24:01,866 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-11 20:24:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:01,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-11 20:24:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-11 20:24:01,883 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:02,017 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2024-09-11 20:24:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-11 20:24:02,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-11 20:24:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:02,025 INFO L225 Difference]: With dead ends: 47 [2024-09-11 20:24:02,025 INFO L226 Difference]: Without dead ends: 26 [2024-09-11 20:24:02,027 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-11 20:24:02,030 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:02,030 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-09-11 20:24:02,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-09-11 20:24:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-11 20:24:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-09-11 20:24:02,059 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 11 [2024-09-11 20:24:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:02,059 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-09-11 20:24:02,059 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-11 20:24:02,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-09-11 20:24:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-11 20:24:02,061 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:02,061 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:02,061 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 20:24:02,062 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:02,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash -108557995, now seen corresponding path program 1 times [2024-09-11 20:24:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424195545] [2024-09-11 20:24:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:02,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:02,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 20:24:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424195545] [2024-09-11 20:24:02,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424195545] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:02,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057806184] [2024-09-11 20:24:02,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:02,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:02,163 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) [2024-09-11 20:24:02,168 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 20:24:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:02,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-11 20:24:02,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 20:24:02,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-11 20:24:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057806184] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:02,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:02,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-11 20:24:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143742994] [2024-09-11 20:24:02,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:02,362 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-11 20:24:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-11 20:24:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-11 20:24:02,363 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-11 20:24:02,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:02,541 INFO L93 Difference]: Finished difference Result 79 states and 134 transitions. [2024-09-11 20:24:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-11 20:24:02,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 18 [2024-09-11 20:24:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:02,545 INFO L225 Difference]: With dead ends: 79 [2024-09-11 20:24:02,545 INFO L226 Difference]: Without dead ends: 55 [2024-09-11 20:24:02,547 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-11 20:24:02,548 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:02,550 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 101 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-11 20:24:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-09-11 20:24:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 10 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (27), 12 states have call predecessors, (27), 10 states have call successors, (27) [2024-09-11 20:24:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 75 transitions. [2024-09-11 20:24:02,571 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 75 transitions. Word has length 18 [2024-09-11 20:24:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:02,572 INFO L474 AbstractCegarLoop]: Abstraction has 49 states and 75 transitions. [2024-09-11 20:24:02,572 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-11 20:24:02,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 75 transitions. [2024-09-11 20:24:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-11 20:24:02,574 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:02,574 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] [2024-09-11 20:24:02,586 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:02,778 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 [2024-09-11 20:24:02,779 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:02,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1262121361, now seen corresponding path program 1 times [2024-09-11 20:24:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858678883] [2024-09-11 20:24:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:02,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:03,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:03,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:03,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:03,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:03,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-11 20:24:03,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:03,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858678883] [2024-09-11 20:24:03,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858678883] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:03,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353767841] [2024-09-11 20:24:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:03,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:03,184 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) [2024-09-11 20:24:03,188 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 20:24:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:03,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-11 20:24:03,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-11 20:24:03,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-11 20:24:03,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353767841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:03,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:03,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-11 20:24:03,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648749201] [2024-09-11 20:24:03,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:03,685 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-11 20:24:03,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-11 20:24:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-11 20:24:03,686 INFO L87 Difference]: Start difference. First operand 49 states and 75 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-11 20:24:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:03,776 INFO L93 Difference]: Finished difference Result 119 states and 226 transitions. [2024-09-11 20:24:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-11 20:24:03,777 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) Word has length 44 [2024-09-11 20:24:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:03,778 INFO L225 Difference]: With dead ends: 119 [2024-09-11 20:24:03,778 INFO L226 Difference]: Without dead ends: 52 [2024-09-11 20:24:03,780 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-11 20:24:03,781 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 27 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:03,781 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 79 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-11 20:24:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-09-11 20:24:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (28), 11 states have call predecessors, (28), 8 states have call successors, (28) [2024-09-11 20:24:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 75 transitions. [2024-09-11 20:24:03,791 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 75 transitions. Word has length 44 [2024-09-11 20:24:03,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:03,791 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 75 transitions. [2024-09-11 20:24:03,791 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-11 20:24:03,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2024-09-11 20:24:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-09-11 20:24:03,793 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:03,793 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] [2024-09-11 20:24:03,806 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:03,994 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 [2024-09-11 20:24:03,998 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:03,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:03,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1396423690, now seen corresponding path program 2 times [2024-09-11 20:24:03,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:03,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114816223] [2024-09-11 20:24:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:03,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-11 20:24:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-11 20:24:04,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:04,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114816223] [2024-09-11 20:24:04,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114816223] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:04,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003294649] [2024-09-11 20:24:04,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:24:04,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:04,492 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) [2024-09-11 20:24:04,494 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-11 20:24:04,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:24:04,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:04,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-11 20:24:04,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-11 20:24:04,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-11 20:24:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003294649] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:05,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-11 20:24:05,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532086609] [2024-09-11 20:24:05,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:05,802 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-11 20:24:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:05,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-11 20:24:05,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-11 20:24:05,803 INFO L87 Difference]: Start difference. First operand 52 states and 75 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 23 states have internal predecessors, (61), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) [2024-09-11 20:24:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:06,201 INFO L93 Difference]: Finished difference Result 118 states and 221 transitions. [2024-09-11 20:24:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-11 20:24:06,202 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 23 states have internal predecessors, (61), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) Word has length 78 [2024-09-11 20:24:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:06,204 INFO L225 Difference]: With dead ends: 118 [2024-09-11 20:24:06,204 INFO L226 Difference]: Without dead ends: 70 [2024-09-11 20:24:06,205 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-11 20:24:06,206 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:06,206 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 170 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:24:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-11 20:24:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2024-09-11 20:24:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (24), 11 states have call predecessors, (24), 8 states have call successors, (24) [2024-09-11 20:24:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-09-11 20:24:06,216 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 78 [2024-09-11 20:24:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:06,216 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-09-11 20:24:06,217 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 23 states have internal predecessors, (61), 9 states have call successors, (13), 2 states have call predecessors, (13), 12 states have return successors, (24), 15 states have call predecessors, (24), 9 states have call successors, (24) [2024-09-11 20:24:06,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:06,217 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-09-11 20:24:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-09-11 20:24:06,220 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:06,220 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:06,232 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-11 20:24:06,423 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 [2024-09-11 20:24:06,424 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:06,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2106999360, now seen corresponding path program 3 times [2024-09-11 20:24:06,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:06,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774523778] [2024-09-11 20:24:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:06,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:06,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-11 20:24:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 337 proven. 135 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2024-09-11 20:24:07,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774523778] [2024-09-11 20:24:07,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774523778] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877650904] [2024-09-11 20:24:07,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:24:07,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:07,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:07,258 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) [2024-09-11 20:24:07,260 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-11 20:24:07,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-11 20:24:07,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:07,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-11 20:24:07,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:07,431 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 315 proven. 141 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-09-11 20:24:07,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 357 proven. 126 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-09-11 20:24:10,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877650904] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:10,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 25] total 42 [2024-09-11 20:24:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604845295] [2024-09-11 20:24:10,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:10,511 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-11 20:24:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-11 20:24:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1508, Unknown=0, NotChecked=0, Total=1722 [2024-09-11 20:24:10,512 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 42 states, 42 states have (on average 1.880952380952381) internal successors, (79), 34 states have internal predecessors, (79), 14 states have call successors, (17), 1 states have call predecessors, (17), 18 states have return successors, (30), 20 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-11 20:24:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:11,349 INFO L93 Difference]: Finished difference Result 146 states and 278 transitions. [2024-09-11 20:24:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-11 20:24:11,350 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.880952380952381) internal successors, (79), 34 states have internal predecessors, (79), 14 states have call successors, (17), 1 states have call predecessors, (17), 18 states have return successors, (30), 20 states have call predecessors, (30), 14 states have call successors, (30) Word has length 130 [2024-09-11 20:24:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:11,355 INFO L225 Difference]: With dead ends: 146 [2024-09-11 20:24:11,355 INFO L226 Difference]: Without dead ends: 91 [2024-09-11 20:24:11,357 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 274 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1092, Invalid=4760, Unknown=0, NotChecked=0, Total=5852 [2024-09-11 20:24:11,361 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:11,361 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 294 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 20:24:11,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-11 20:24:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 56. [2024-09-11 20:24:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 39 states have internal predecessors, (44), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (24), 11 states have call predecessors, (24), 9 states have call successors, (24) [2024-09-11 20:24:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-09-11 20:24:11,379 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 130 [2024-09-11 20:24:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:11,380 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-09-11 20:24:11,380 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.880952380952381) internal successors, (79), 34 states have internal predecessors, (79), 14 states have call successors, (17), 1 states have call predecessors, (17), 18 states have return successors, (30), 20 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-11 20:24:11,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-09-11 20:24:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-11 20:24:11,384 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:11,384 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] [2024-09-11 20:24:11,397 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:11,588 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 [2024-09-11 20:24:11,589 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:11,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash -511219076, now seen corresponding path program 4 times [2024-09-11 20:24:11,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:11,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663888007] [2024-09-11 20:24:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:11,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:11,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:11,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-11 20:24:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-11 20:24:12,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663888007] [2024-09-11 20:24:12,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663888007] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:12,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15145753] [2024-09-11 20:24:12,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:24:12,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:12,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:12,468 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) [2024-09-11 20:24:12,470 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-11 20:24:12,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:24:12,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:12,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-11 20:24:12,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-11 20:24:12,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-11 20:24:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15145753] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:16,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:16,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-11 20:24:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054125731] [2024-09-11 20:24:16,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:16,093 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-11 20:24:16,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:16,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-11 20:24:16,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-11 20:24:16,094 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 32 states have internal predecessors, (83), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-11 20:24:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:16,969 INFO L93 Difference]: Finished difference Result 167 states and 321 transitions. [2024-09-11 20:24:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-11 20:24:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 32 states have internal predecessors, (83), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) Word has length 156 [2024-09-11 20:24:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:16,972 INFO L225 Difference]: With dead ends: 167 [2024-09-11 20:24:16,972 INFO L226 Difference]: Without dead ends: 115 [2024-09-11 20:24:16,974 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 331 SyntacticMatches, 14 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1164, Invalid=4998, Unknown=0, NotChecked=0, Total=6162 [2024-09-11 20:24:16,974 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 68 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:16,975 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 248 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 20:24:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-11 20:24:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 76. [2024-09-11 20:24:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 13 states have call successors, (13), 5 states have call predecessors, (13), 12 states have return successors, (46), 19 states have call predecessors, (46), 13 states have call successors, (46) [2024-09-11 20:24:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 115 transitions. [2024-09-11 20:24:17,000 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 115 transitions. Word has length 156 [2024-09-11 20:24:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:17,000 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 115 transitions. [2024-09-11 20:24:17,000 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 32 states have internal predecessors, (83), 16 states have call successors, (19), 1 states have call predecessors, (19), 18 states have return successors, (36), 18 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-11 20:24:17,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 115 transitions. [2024-09-11 20:24:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-11 20:24:17,002 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:17,002 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] [2024-09-11 20:24:17,018 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:17,206 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 [2024-09-11 20:24:17,207 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:17,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:17,207 INFO L85 PathProgramCache]: Analyzing trace with hash -702272830, now seen corresponding path program 5 times [2024-09-11 20:24:17,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:17,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143531598] [2024-09-11 20:24:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:17,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-11 20:24:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 162 proven. 425 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2024-09-11 20:24:17,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:17,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143531598] [2024-09-11 20:24:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143531598] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956650094] [2024-09-11 20:24:17,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:24:17,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:17,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:17,649 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) [2024-09-11 20:24:17,653 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-11 20:24:17,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-11 20:24:17,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:17,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-11 20:24:17,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 715 proven. 114 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2024-09-11 20:24:17,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 165 proven. 425 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2024-09-11 20:24:19,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956650094] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:19,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:19,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 17] total 24 [2024-09-11 20:24:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894092809] [2024-09-11 20:24:19,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:19,214 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-11 20:24:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-11 20:24:19,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-09-11 20:24:19,215 INFO L87 Difference]: Start difference. First operand 76 states and 115 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2024-09-11 20:24:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:19,599 INFO L93 Difference]: Finished difference Result 167 states and 295 transitions. [2024-09-11 20:24:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-11 20:24:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) Word has length 156 [2024-09-11 20:24:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:19,601 INFO L225 Difference]: With dead ends: 167 [2024-09-11 20:24:19,601 INFO L226 Difference]: Without dead ends: 89 [2024-09-11 20:24:19,603 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 340 SyntacticMatches, 11 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2024-09-11 20:24:19,603 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:19,604 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 167 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:24:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-09-11 20:24:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2024-09-11 20:24:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.12) internal successors, (56), 51 states have internal predecessors, (56), 13 states have call successors, (13), 5 states have call predecessors, (13), 12 states have return successors, (42), 19 states have call predecessors, (42), 13 states have call successors, (42) [2024-09-11 20:24:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2024-09-11 20:24:19,615 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 156 [2024-09-11 20:24:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:19,615 INFO L474 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2024-09-11 20:24:19,615 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 21 states have internal predecessors, (70), 12 states have call successors, (18), 2 states have call predecessors, (18), 12 states have return successors, (28), 11 states have call predecessors, (28), 12 states have call successors, (28) [2024-09-11 20:24:19,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2024-09-11 20:24:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-09-11 20:24:19,617 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:19,617 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] [2024-09-11 20:24:19,631 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:19,818 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 [2024-09-11 20:24:19,819 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:19,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1922447937, now seen corresponding path program 6 times [2024-09-11 20:24:19,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:19,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942480235] [2024-09-11 20:24:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:19,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-11 20:24:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-11 20:24:20,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942480235] [2024-09-11 20:24:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942480235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448931095] [2024-09-11 20:24:20,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-11 20:24:20,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:20,662 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) [2024-09-11 20:24:20,666 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-11 20:24:20,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-11 20:24:20,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:20,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-11 20:24:20,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-11 20:24:20,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-11 20:24:24,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448931095] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:24,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:24,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-11 20:24:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502807976] [2024-09-11 20:24:24,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:24,371 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-11 20:24:24,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-11 20:24:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-11 20:24:24,372 INFO L87 Difference]: Start difference. First operand 76 states and 111 transitions. Second operand has 35 states, 35 states have (on average 2.4) internal successors, (84), 31 states have internal predecessors, (84), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2024-09-11 20:24:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:25,027 INFO L93 Difference]: Finished difference Result 185 states and 329 transitions. [2024-09-11 20:24:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-11 20:24:25,027 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4) internal successors, (84), 31 states have internal predecessors, (84), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) Word has length 169 [2024-09-11 20:24:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:25,029 INFO L225 Difference]: With dead ends: 185 [2024-09-11 20:24:25,029 INFO L226 Difference]: Without dead ends: 113 [2024-09-11 20:24:25,031 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 360 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=993, Invalid=3977, Unknown=0, NotChecked=0, Total=4970 [2024-09-11 20:24:25,032 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 61 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:25,032 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 221 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-11 20:24:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-11 20:24:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2024-09-11 20:24:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 states have internal predecessors, (62), 15 states have call successors, (15), 5 states have call predecessors, (15), 14 states have return successors, (53), 23 states have call predecessors, (53), 15 states have call successors, (53) [2024-09-11 20:24:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 130 transitions. [2024-09-11 20:24:25,045 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 130 transitions. Word has length 169 [2024-09-11 20:24:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:25,045 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 130 transitions. [2024-09-11 20:24:25,046 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4) internal successors, (84), 31 states have internal predecessors, (84), 17 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (37), 16 states have call predecessors, (37), 17 states have call successors, (37) [2024-09-11 20:24:25,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 130 transitions. [2024-09-11 20:24:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-09-11 20:24:25,047 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:25,047 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] [2024-09-11 20:24:25,062 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:25,251 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 [2024-09-11 20:24:25,252 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:25,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:25,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2140695240, now seen corresponding path program 7 times [2024-09-11 20:24:25,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:25,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483717451] [2024-09-11 20:24:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:25,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-11 20:24:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:25,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-11 20:24:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 600 proven. 156 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-11 20:24:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483717451] [2024-09-11 20:24:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483717451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304035897] [2024-09-11 20:24:26,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-11 20:24:26,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:26,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:26,230 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) [2024-09-11 20:24:26,235 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-11 20:24:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:26,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-11 20:24:26,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-11 20:24:26,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 597 proven. 189 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-11 20:24:27,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304035897] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:27,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:27,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 36 [2024-09-11 20:24:27,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907470987] [2024-09-11 20:24:27,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:27,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-11 20:24:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:27,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-11 20:24:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1171, Unknown=0, NotChecked=0, Total=1260 [2024-09-11 20:24:27,467 INFO L87 Difference]: Start difference. First operand 86 states and 130 transitions. Second operand has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 29 states have internal predecessors, (55), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2024-09-11 20:24:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:29,784 INFO L93 Difference]: Finished difference Result 247 states and 440 transitions. [2024-09-11 20:24:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-09-11 20:24:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 29 states have internal predecessors, (55), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) Word has length 182 [2024-09-11 20:24:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:29,794 INFO L225 Difference]: With dead ends: 247 [2024-09-11 20:24:29,794 INFO L226 Difference]: Without dead ends: 197 [2024-09-11 20:24:29,801 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=985, Invalid=7025, Unknown=0, NotChecked=0, Total=8010 [2024-09-11 20:24:29,801 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 121 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:29,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 481 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-11 20:24:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-09-11 20:24:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 130. [2024-09-11 20:24:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 85 states have internal predecessors, (92), 21 states have call successors, (21), 6 states have call predecessors, (21), 24 states have return successors, (104), 38 states have call predecessors, (104), 21 states have call successors, (104) [2024-09-11 20:24:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 217 transitions. [2024-09-11 20:24:29,868 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 217 transitions. Word has length 182 [2024-09-11 20:24:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:29,869 INFO L474 AbstractCegarLoop]: Abstraction has 130 states and 217 transitions. [2024-09-11 20:24:29,869 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 29 states have internal predecessors, (55), 6 states have call successors, (9), 1 states have call predecessors, (9), 14 states have return successors, (22), 13 states have call predecessors, (22), 6 states have call successors, (22) [2024-09-11 20:24:29,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 217 transitions. [2024-09-11 20:24:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-09-11 20:24:29,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:29,871 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 19, 14, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-11 20:24:29,884 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:30,072 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 [2024-09-11 20:24:30,072 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:30,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:30,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1157927000, now seen corresponding path program 8 times [2024-09-11 20:24:30,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355149104] [2024-09-11 20:24:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:30,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-11 20:24:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-11 20:24:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-11 20:24:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-11 20:24:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-11 20:24:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-11 20:24:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-11 20:24:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 359 proven. 577 refuted. 0 times theorem prover too weak. 1689 trivial. 0 not checked. [2024-09-11 20:24:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355149104] [2024-09-11 20:24:30,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355149104] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53130969] [2024-09-11 20:24:30,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 20:24:30,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:30,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:30,642 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) [2024-09-11 20:24:30,644 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-11 20:24:30,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 20:24:30,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:30,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-11 20:24:30,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 329 proven. 683 refuted. 0 times theorem prover too weak. 1613 trivial. 0 not checked. [2024-09-11 20:24:30,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2625 backedges. 331 proven. 741 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-09-11 20:24:33,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53130969] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:33,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:33,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 16 [2024-09-11 20:24:33,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322750704] [2024-09-11 20:24:33,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:33,408 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-11 20:24:33,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:33,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-11 20:24:33,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-09-11 20:24:33,409 INFO L87 Difference]: Start difference. First operand 130 states and 217 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (31), 9 states have call predecessors, (31), 11 states have call successors, (31) [2024-09-11 20:24:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:33,564 INFO L93 Difference]: Finished difference Result 303 states and 772 transitions. [2024-09-11 20:24:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 20:24:33,564 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (31), 9 states have call predecessors, (31), 11 states have call successors, (31) Word has length 222 [2024-09-11 20:24:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:33,566 INFO L225 Difference]: With dead ends: 303 [2024-09-11 20:24:33,566 INFO L226 Difference]: Without dead ends: 119 [2024-09-11 20:24:33,569 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 498 SyntacticMatches, 10 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2024-09-11 20:24:33,569 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 24 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:33,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 154 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-11 20:24:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-09-11 20:24:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2024-09-11 20:24:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 62 states have internal predecessors, (68), 17 states have call successors, (17), 8 states have call predecessors, (17), 13 states have return successors, (38), 21 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-11 20:24:33,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 123 transitions. [2024-09-11 20:24:33,585 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 123 transitions. Word has length 222 [2024-09-11 20:24:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:33,585 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 123 transitions. [2024-09-11 20:24:33,585 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (31), 9 states have call predecessors, (31), 11 states have call successors, (31) [2024-09-11 20:24:33,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:33,585 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 123 transitions. [2024-09-11 20:24:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-09-11 20:24:33,587 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:33,587 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] [2024-09-11 20:24:33,600 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:33,787 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 [2024-09-11 20:24:33,788 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:33,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1482736643, now seen corresponding path program 9 times [2024-09-11 20:24:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:33,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796119177] [2024-09-11 20:24:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:33,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-11 20:24:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-11 20:24:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-11 20:24:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 664 proven. 533 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2024-09-11 20:24:34,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796119177] [2024-09-11 20:24:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796119177] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643329591] [2024-09-11 20:24:34,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-11 20:24:34,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:34,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:34,876 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) [2024-09-11 20:24:34,879 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-11 20:24:35,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-11 20:24:35,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:35,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-09-11 20:24:35,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2024-09-11 20:24:35,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 685 proven. 580 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-09-11 20:24:39,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643329591] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:39,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:39,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 32] total 39 [2024-09-11 20:24:39,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400107999] [2024-09-11 20:24:39,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:39,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-11 20:24:39,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:39,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-11 20:24:39,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2024-09-11 20:24:39,514 INFO L87 Difference]: Start difference. First operand 92 states and 123 transitions. Second operand has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 35 states have internal predecessors, (96), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) [2024-09-11 20:24:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:40,109 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2024-09-11 20:24:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-11 20:24:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 35 states have internal predecessors, (96), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) Word has length 195 [2024-09-11 20:24:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:40,111 INFO L225 Difference]: With dead ends: 206 [2024-09-11 20:24:40,111 INFO L226 Difference]: Without dead ends: 133 [2024-09-11 20:24:40,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 416 SyntacticMatches, 21 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=719, Invalid=3063, Unknown=0, NotChecked=0, Total=3782 [2024-09-11 20:24:40,113 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 48 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:40,113 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 359 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 20:24:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-11 20:24:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 97. [2024-09-11 20:24:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.09375) internal successors, (70), 65 states have internal predecessors, (70), 18 states have call successors, (18), 8 states have call predecessors, (18), 14 states have return successors, (40), 23 states have call predecessors, (40), 18 states have call successors, (40) [2024-09-11 20:24:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 128 transitions. [2024-09-11 20:24:40,129 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 128 transitions. Word has length 195 [2024-09-11 20:24:40,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:40,130 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 128 transitions. [2024-09-11 20:24:40,130 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 35 states have internal predecessors, (96), 21 states have call successors, (24), 1 states have call predecessors, (24), 20 states have return successors, (45), 18 states have call predecessors, (45), 21 states have call successors, (45) [2024-09-11 20:24:40,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 128 transitions. [2024-09-11 20:24:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-09-11 20:24:40,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:40,131 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] [2024-09-11 20:24:40,145 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:40,335 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 [2024-09-11 20:24:40,335 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:40,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:40,335 INFO L85 PathProgramCache]: Analyzing trace with hash -599600630, now seen corresponding path program 10 times [2024-09-11 20:24:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:40,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859894069] [2024-09-11 20:24:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-11 20:24:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-11 20:24:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-11 20:24:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 267 proven. 793 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2024-09-11 20:24:40,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859894069] [2024-09-11 20:24:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859894069] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302992857] [2024-09-11 20:24:40,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-11 20:24:40,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:40,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:40,996 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) [2024-09-11 20:24:40,997 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-11 20:24:41,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-11 20:24:41,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:41,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-11 20:24:41,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-09-11 20:24:41,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 274 proven. 806 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2024-09-11 20:24:42,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302992857] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:42,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:42,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2024-09-11 20:24:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862917042] [2024-09-11 20:24:42,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:42,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-11 20:24:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-11 20:24:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-09-11 20:24:42,899 INFO L87 Difference]: Start difference. First operand 97 states and 128 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-11 20:24:43,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:43,164 INFO L93 Difference]: Finished difference Result 174 states and 226 transitions. [2024-09-11 20:24:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-11 20:24:43,165 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 208 [2024-09-11 20:24:43,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:43,166 INFO L225 Difference]: With dead ends: 174 [2024-09-11 20:24:43,166 INFO L226 Difference]: Without dead ends: 103 [2024-09-11 20:24:43,168 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 456 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=347, Invalid=1459, Unknown=0, NotChecked=0, Total=1806 [2024-09-11 20:24:43,169 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:43,169 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 228 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-11 20:24:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-11 20:24:43,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2024-09-11 20:24:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.098360655737705) internal successors, (67), 62 states have internal predecessors, (67), 17 states have call successors, (17), 8 states have call predecessors, (17), 13 states have return successors, (31), 21 states have call predecessors, (31), 17 states have call successors, (31) [2024-09-11 20:24:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2024-09-11 20:24:43,185 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 208 [2024-09-11 20:24:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:43,186 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2024-09-11 20:24:43,186 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 25 states have internal predecessors, (82), 16 states have call successors, (22), 2 states have call predecessors, (22), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-11 20:24:43,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2024-09-11 20:24:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-09-11 20:24:43,187 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 20:24:43,187 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] [2024-09-11 20:24:43,202 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-11 20:24:43,391 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 [2024-09-11 20:24:43,391 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 20:24:43,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1205881647, now seen corresponding path program 11 times [2024-09-11 20:24:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 20:24:43,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932554775] [2024-09-11 20:24:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 20:24:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 20:24:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-11 20:24:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-11 20:24:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-11 20:24:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-11 20:24:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-11 20:24:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-11 20:24:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-11 20:24:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-11 20:24:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-11 20:24:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-11 20:24:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-11 20:24:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 20:24:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 228 proven. 519 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2024-09-11 20:24:43,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 20:24:43,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932554775] [2024-09-11 20:24:43,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932554775] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 20:24:43,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157691856] [2024-09-11 20:24:43,832 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-11 20:24:43,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 20:24:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 20:24:43,834 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-11 20:24:43,885 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-11 20:24:44,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-09-11 20:24:44,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 20:24:44,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-11 20:24:44,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 20:24:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 1483 proven. 777 refuted. 0 times theorem prover too weak. 2069 trivial. 0 not checked. [2024-09-11 20:24:44,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 20:24:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4329 backedges. 1579 proven. 819 refuted. 0 times theorem prover too weak. 1931 trivial. 0 not checked. [2024-09-11 20:24:53,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157691856] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 20:24:53,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 20:24:53,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 29, 40] total 49 [2024-09-11 20:24:53,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100965333] [2024-09-11 20:24:53,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 20:24:53,263 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-11 20:24:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 20:24:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-11 20:24:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=2073, Unknown=0, NotChecked=0, Total=2352 [2024-09-11 20:24:53,264 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 43 states have internal predecessors, (113), 26 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 26 states have call predecessors, (51), 26 states have call successors, (51) [2024-09-11 20:24:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 20:24:54,187 INFO L93 Difference]: Finished difference Result 195 states and 273 transitions. [2024-09-11 20:24:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-11 20:24:54,187 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 43 states have internal predecessors, (113), 26 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 26 states have call predecessors, (51), 26 states have call successors, (51) Word has length 280 [2024-09-11 20:24:54,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 20:24:54,189 INFO L225 Difference]: With dead ends: 195 [2024-09-11 20:24:54,189 INFO L226 Difference]: Without dead ends: 0 [2024-09-11 20:24:54,192 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 575 SyntacticMatches, 27 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2790 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1633, Invalid=7109, Unknown=0, NotChecked=0, Total=8742 [2024-09-11 20:24:54,192 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 124 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-11 20:24:54,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 366 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-11 20:24:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-11 20:24:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-11 20:24:54,193 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) [2024-09-11 20:24:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-11 20:24:54,193 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 280 [2024-09-11 20:24:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 20:24:54,193 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-11 20:24:54,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 43 states have internal predecessors, (113), 26 states have call successors, (29), 1 states have call predecessors, (29), 26 states have return successors, (51), 26 states have call predecessors, (51), 26 states have call successors, (51) [2024-09-11 20:24:54,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 20:24:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-11 20:24:54,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-11 20:24:54,196 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-11 20:24:54,211 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-11 20:24:54,397 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-11 20:24:54,400 INFO L408 BasicCegarLoop]: Path program histogram: [11, 1, 1] [2024-09-11 20:24:54,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-11 20:26:13,098 WARN L293 SmtUtils]: Spent 15.96s on a formula simplification. DAG size of input: 304 DAG size of output: 420 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-11 20:26:25,339 WARN L293 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 278 DAG size of output: 184 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-09-11 20:26:59,578 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-11 20:26:59,603 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-11 20:26:59,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 08:26:59 BoogieIcfgContainer [2024-09-11 20:26:59,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-11 20:26:59,606 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-11 20:26:59,606 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-11 20:26:59,606 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-11 20:26:59,607 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:24:01" (3/4) ... [2024-09-11 20:26:59,608 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-11 20:26:59,611 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2024-09-11 20:26:59,613 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-09-11 20:26:59,614 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-11 20:26:59,614 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-11 20:26:59,614 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-11 20:26:59,684 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-11 20:26:59,684 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-11 20:26:59,684 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-11 20:26:59,685 INFO L158 Benchmark]: Toolchain (without parser) took 178717.88ms. Allocated memory was 195.0MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 124.0MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 573.0MB. Max. memory is 16.1GB. [2024-09-11 20:26:59,685 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 152.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:26:59,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.00ms. Allocated memory is still 195.0MB. Free memory was 123.8MB in the beginning and 112.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-11 20:26:59,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.02ms. Allocated memory is still 195.0MB. Free memory was 112.5MB in the beginning and 111.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-11 20:26:59,686 INFO L158 Benchmark]: Boogie Preprocessor took 34.03ms. Allocated memory is still 195.0MB. Free memory was 111.2MB in the beginning and 109.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 20:26:59,686 INFO L158 Benchmark]: RCFGBuilder took 226.76ms. Allocated memory is still 195.0MB. Free memory was 109.4MB in the beginning and 97.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-11 20:26:59,686 INFO L158 Benchmark]: TraceAbstraction took 178166.94ms. Allocated memory was 195.0MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 96.9MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-09-11 20:26:59,686 INFO L158 Benchmark]: Witness Printer took 78.15ms. Allocated memory is still 1.8GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-11 20:26:59,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 152.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.00ms. Allocated memory is still 195.0MB. Free memory was 123.8MB in the beginning and 112.5MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.02ms. Allocated memory is still 195.0MB. Free memory was 112.5MB in the beginning and 111.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.03ms. Allocated memory is still 195.0MB. Free memory was 111.2MB in the beginning and 109.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.76ms. Allocated memory is still 195.0MB. Free memory was 109.4MB in the beginning and 97.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 178166.94ms. Allocated memory was 195.0MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 96.9MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 78.15ms. Allocated memory is still 1.8GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.9s, OverallIterations: 13, TraceHistogramMax: 42, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 736 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 669 mSDsluCounter, 2925 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2559 mSDsCounter, 989 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9313 IncrementalHoareTripleChecker+Invalid, 10302 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 989 mSolverCounterUnsat, 366 mSDtfsCounter, 9313 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4719 GetRequests, 3959 SyntacticMatches, 126 SemanticMatches, 634 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10624 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=9, InterpolantAutomatonStates: 392, 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, 13 MinimizatonAttempts, 281 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 39.6s InterpolantComputationTime, 3687 NumberOfCodeBlocks, 3539 NumberOfCodeBlocksAsserted, 104 NumberOfCheckSat, 5488 ConstructedInterpolants, 0 QuantifiedInterpolants, 10658 SizeOfPredicates, 62 NumberOfNonLiveVariables, 5165 ConjunctsInSsa, 373 ConjunctsInUnsatCore, 37 InterpolantComputations, 1 PerfectInterpolantSequences, 42905/54543 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Location Invariant Derived location invariant: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((((((((\old(m) == 0) || ((7 <= \result) && ((3 < \old(n)) || (\old(n) == 3)))) || ((\old(n) == 2) && (\result == 7))) || (\result == 3)) || ((\result == 5) && (\old(n) == 1))) || (2 < \old(m))) || (\old(m) == 1)) && ((((\old(m) == 0) || (0 < \old(n))) || ((\old(n) == 0) && (2 <= \old(m)))) || (\result == 2))) && ((0 < \old(m)) || ((\old(m) == 0) && (\result == ((long long) \old(n) + 1))))) RESULT: Ultimate proved your program to be correct! [2024-09-11 20:26:59,741 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE