./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f1d7dc9d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_15x0-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:07:44,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:07:44,064 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:07:44,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:07:44,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:07:44,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:07:44,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:07:44,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:07:44,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:07:44,093 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:07:44,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:07:44,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:07:44,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:07:44,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:07:44,094 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:07:44,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:07:44,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:07:44,095 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:07:44,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:07:44,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:07:44,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:07:44,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:07:44,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:07:44,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:07:44,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:07:44,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:07:44,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:07:44,097 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:07:44,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:07:44,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:07:44,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:07:44,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:07:44,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:07:44,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:07:44,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:07:44,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:07:44,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:07:44,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:07:44,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:07:44,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:07:44,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:07:44,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:07:44,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 13:07:44,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:07:44,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:07:44,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:07:44,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:07:44,332 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:07:44,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-20 13:07:45,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:07:45,784 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:07:45,785 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-20 13:07:45,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c5c23f923/c0018980cafb455faf778d9e34a5ba1b/FLAGf729230af [2024-09-20 13:07:46,180 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c5c23f923/c0018980cafb455faf778d9e34a5ba1b [2024-09-20 13:07:46,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:07:46,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 13:07:46,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:07:46,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:07:46,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:07:46,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c12d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46, skipping insertion in model container [2024-09-20 13:07:46,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,210 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:07:46,339 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-20 13:07:46,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:07:46,353 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 13:07:46,365 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-20 13:07:46,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:07:46,378 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:07:46,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46 WrapperNode [2024-09-20 13:07:46,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:07:46,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:07:46,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:07:46,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:07:46,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,395 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 13:07:46,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:07:46,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:07:46,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:07:46,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:07:46,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,412 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 13:07:46,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:07:46,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:07:46,424 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:07:46,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:07:46,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (1/1) ... [2024-09-20 13:07:46,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:07:46,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:46,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 13:07:46,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 13:07:46,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:07:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 13:07:46,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 13:07:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:07:46,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:07:46,517 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-20 13:07:46,517 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-20 13:07:46,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 13:07:46,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 13:07:46,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:07:46,567 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:07:46,569 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:07:46,654 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-20 13:07:46,655 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:07:46,673 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:07:46,674 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-20 13:07:46,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:46 BoogieIcfgContainer [2024-09-20 13:07:46,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:07:46,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:07:46,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:07:46,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:07:46,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:46" (1/3) ... [2024-09-20 13:07:46,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf90d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:46, skipping insertion in model container [2024-09-20 13:07:46,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:46" (2/3) ... [2024-09-20 13:07:46,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf90d0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:46, skipping insertion in model container [2024-09-20 13:07:46,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:46" (3/3) ... [2024-09-20 13:07:46,683 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2024-09-20 13:07:46,700 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:07:46,700 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 13:07:46,742 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:07:46,748 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;@35a7febf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:07:46,748 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 13:07:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 13:07:46,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 13:07:46,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:46,759 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:46,759 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-20 13:07:46,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:46,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730913783] [2024-09-20 13:07:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:46,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:46,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:46,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:07:46,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:46,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730913783] [2024-09-20 13:07:46,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730913783] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:07:47,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:07:47,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 13:07:47,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849136782] [2024-09-20 13:07:47,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:07:47,005 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:07:47,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:07:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:07:47,027 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:07:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:47,102 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-20 13:07:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:07:47,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-20 13:07:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:47,112 INFO L225 Difference]: With dead ends: 30 [2024-09-20 13:07:47,113 INFO L226 Difference]: Without dead ends: 18 [2024-09-20 13:07:47,118 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:07:47,121 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:47,122 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:07:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-20 13:07:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-20 13:07:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-20 13:07:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-20 13:07:47,152 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-20 13:07:47,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:47,152 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-20 13:07:47,152 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 13:07:47,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-20 13:07:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-20 13:07:47,154 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:47,154 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:47,155 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:07:47,155 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:47,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-20 13:07:47,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:47,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701706953] [2024-09-20 13:07:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:47,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:47,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:47,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:47,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 13:07:47,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701706953] [2024-09-20 13:07:47,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701706953] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045726867] [2024-09-20 13:07:47,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:47,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:47,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:47,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:47,319 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:07:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:47,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 13:07:47,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 13:07:47,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:07:47,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045726867] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:47,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:47,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-20 13:07:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962125730] [2024-09-20 13:07:47,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:47,605 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 13:07:47,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 13:07:47,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-20 13:07:47,606 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:07:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:47,649 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-20 13:07:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:07:47,649 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-20 13:07:47,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:47,650 INFO L225 Difference]: With dead ends: 25 [2024-09-20 13:07:47,650 INFO L226 Difference]: Without dead ends: 21 [2024-09-20 13:07:47,650 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:07:47,651 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:47,652 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:07:47,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-20 13:07:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-20 13:07:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-20 13:07:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-20 13:07:47,656 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-20 13:07:47,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:47,656 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-20 13:07:47,657 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:07:47,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:47,657 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-20 13:07:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-20 13:07:47,658 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:47,658 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:47,671 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:07:47,862 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:47,863 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:47,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-20 13:07:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18178079] [2024-09-20 13:07:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:47,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:47,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-20 13:07:48,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18178079] [2024-09-20 13:07:48,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18178079] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:48,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997313157] [2024-09-20 13:07:48,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:07:48,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:48,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:48,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:48,118 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:07:48,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:07:48,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:07:48,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 13:07:48,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-20 13:07:48,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-20 13:07:48,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997313157] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:48,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:48,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-20 13:07:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134890468] [2024-09-20 13:07:48,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:48,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-20 13:07:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-20 13:07:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-20 13:07:48,408 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-20 13:07:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:48,450 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-20 13:07:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 13:07:48,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-20 13:07:48,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:48,453 INFO L225 Difference]: With dead ends: 28 [2024-09-20 13:07:48,454 INFO L226 Difference]: Without dead ends: 24 [2024-09-20 13:07:48,455 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:07:48,458 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:48,459 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:07:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-20 13:07:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-20 13:07:48,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-20 13:07:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-20 13:07:48,465 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-20 13:07:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:48,465 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-20 13:07:48,465 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-20 13:07:48,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-20 13:07:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-20 13:07:48,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:48,467 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:48,480 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 13:07:48,671 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:48,672 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:48,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-20 13:07:48,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:48,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485606867] [2024-09-20 13:07:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:48,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-20 13:07:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485606867] [2024-09-20 13:07:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485606867] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598316824] [2024-09-20 13:07:48,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:07:48,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:48,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:48,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:48,879 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:07:48,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 13:07:48,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:07:48,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:07:48,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-20 13:07:48,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-20 13:07:49,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598316824] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:49,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:49,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-20 13:07:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148471165] [2024-09-20 13:07:49,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:49,414 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 13:07:49,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 13:07:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:07:49,415 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-20 13:07:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:49,466 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-20 13:07:49,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:07:49,467 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-20 13:07:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:49,468 INFO L225 Difference]: With dead ends: 31 [2024-09-20 13:07:49,468 INFO L226 Difference]: Without dead ends: 27 [2024-09-20 13:07:49,468 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-09-20 13:07:49,469 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:49,469 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:07:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-20 13:07:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-20 13:07:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-20 13:07:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-20 13:07:49,473 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-20 13:07:49,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:49,474 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-20 13:07:49,474 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-20 13:07:49,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-20 13:07:49,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 13:07:49,475 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:49,475 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:49,494 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 13:07:49,675 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:49,676 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:49,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:49,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-20 13:07:49,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:49,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378731091] [2024-09-20 13:07:49,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:49,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:49,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:49,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:49,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:49,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:49,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:49,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-20 13:07:49,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:49,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378731091] [2024-09-20 13:07:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378731091] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756952649] [2024-09-20 13:07:49,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 13:07:49,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:49,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:49,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:49,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:07:49,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 13:07:49,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:07:49,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 13:07:49,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-20 13:07:50,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-20 13:07:50,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756952649] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:50,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:50,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-20 13:07:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138339404] [2024-09-20 13:07:50,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:50,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 13:07:50,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 13:07:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-20 13:07:50,588 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-20 13:07:50,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:50,640 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-20 13:07:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:07:50,640 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-20 13:07:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:50,641 INFO L225 Difference]: With dead ends: 34 [2024-09-20 13:07:50,641 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 13:07:50,642 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-20 13:07:50,642 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:50,642 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:07:50,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 13:07:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-20 13:07:50,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-20 13:07:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-20 13:07:50,647 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-20 13:07:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:50,647 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-20 13:07:50,647 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-20 13:07:50,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-20 13:07:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-20 13:07:50,648 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:50,648 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:50,664 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 13:07:50,852 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:50,853 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:50,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-20 13:07:50,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:50,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297685548] [2024-09-20 13:07:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:50,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:50,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:50,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:50,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:50,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:51,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:51,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:51,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 13:07:51,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:51,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297685548] [2024-09-20 13:07:51,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297685548] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:51,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047338967] [2024-09-20 13:07:51,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 13:07:51,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:51,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:51,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:51,071 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:07:51,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-20 13:07:51,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:07:51,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 13:07:51,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 13:07:51,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-20 13:07:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047338967] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:51,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-20 13:07:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958863836] [2024-09-20 13:07:51,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:51,934 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 13:07:51,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 13:07:51,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-20 13:07:51,935 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-20 13:07:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:52,004 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-20 13:07:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 13:07:52,005 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-20 13:07:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:52,006 INFO L225 Difference]: With dead ends: 37 [2024-09-20 13:07:52,006 INFO L226 Difference]: Without dead ends: 33 [2024-09-20 13:07:52,007 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-20 13:07:52,007 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:52,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:07:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-20 13:07:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-20 13:07:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-20 13:07:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-20 13:07:52,016 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-20 13:07:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:52,016 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-20 13:07:52,016 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-20 13:07:52,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-20 13:07:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-20 13:07:52,018 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:52,018 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:52,030 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 13:07:52,219 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 13:07:52,220 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:52,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-20 13:07:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:52,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49767531] [2024-09-20 13:07:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:52,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-20 13:07:52,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:52,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49767531] [2024-09-20 13:07:52,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49767531] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:52,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729428477] [2024-09-20 13:07:52,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 13:07:52,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:52,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:52,496 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:07:52,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-20 13:07:52,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:07:52,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 13:07:52,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-20 13:07:52,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-20 13:07:53,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729428477] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:53,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:53,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-20 13:07:53,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355004301] [2024-09-20 13:07:53,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:53,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 13:07:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 13:07:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-20 13:07:53,840 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-20 13:07:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:53,925 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-20 13:07:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 13:07:53,925 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-20 13:07:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:53,927 INFO L225 Difference]: With dead ends: 40 [2024-09-20 13:07:53,927 INFO L226 Difference]: Without dead ends: 36 [2024-09-20 13:07:53,928 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-09-20 13:07:53,928 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:53,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:07:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-20 13:07:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-20 13:07:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-20 13:07:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-20 13:07:53,933 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-20 13:07:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:53,933 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-20 13:07:53,933 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-20 13:07:53,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-20 13:07:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-20 13:07:53,934 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:53,934 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:53,951 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 13:07:54,138 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:54,139 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:54,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-20 13:07:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:54,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306607199] [2024-09-20 13:07:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:54,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-20 13:07:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306607199] [2024-09-20 13:07:54,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306607199] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493601911] [2024-09-20 13:07:54,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 13:07:54,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:54,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:54,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:54,435 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 13:07:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:54,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 13:07:54,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-20 13:07:54,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 13:07:56,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493601911] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:56,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:56,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-20 13:07:56,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878063960] [2024-09-20 13:07:56,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:56,163 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 13:07:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:56,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 13:07:56,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-20 13:07:56,165 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-20 13:07:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:56,255 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-20 13:07:56,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 13:07:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-20 13:07:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:56,256 INFO L225 Difference]: With dead ends: 43 [2024-09-20 13:07:56,256 INFO L226 Difference]: Without dead ends: 39 [2024-09-20 13:07:56,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-09-20 13:07:56,257 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:56,258 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:07:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-20 13:07:56,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-20 13:07:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-20 13:07:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-20 13:07:56,263 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-20 13:07:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:56,263 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-20 13:07:56,263 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-20 13:07:56,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-20 13:07:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-20 13:07:56,264 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:56,264 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:56,276 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 13:07:56,464 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:56,465 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:56,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-20 13:07:56,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:56,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16840165] [2024-09-20 13:07:56,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-20 13:07:56,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:56,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16840165] [2024-09-20 13:07:56,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16840165] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:56,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526925405] [2024-09-20 13:07:56,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:07:56,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:56,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:56,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:56,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 13:07:56,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:07:56,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:07:56,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 13:07:56,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:07:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-20 13:07:56,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:07:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-20 13:07:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526925405] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:07:59,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:07:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-20 13:07:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500317637] [2024-09-20 13:07:59,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:07:59,202 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 13:07:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:07:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 13:07:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-20 13:07:59,204 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-20 13:07:59,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:07:59,325 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-20 13:07:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 13:07:59,325 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-20 13:07:59,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:07:59,326 INFO L225 Difference]: With dead ends: 46 [2024-09-20 13:07:59,326 INFO L226 Difference]: Without dead ends: 42 [2024-09-20 13:07:59,327 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-20 13:07:59,327 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:07:59,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:07:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-20 13:07:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-20 13:07:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-20 13:07:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-20 13:07:59,336 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-20 13:07:59,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:07:59,336 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-20 13:07:59,336 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-20 13:07:59,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:59,336 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-20 13:07:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-20 13:07:59,337 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:07:59,337 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:07:59,349 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 13:07:59,541 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:59,542 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:07:59,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:07:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-20 13:07:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:07:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326388381] [2024-09-20 13:07:59,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:07:59,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:07:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:07:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:07:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:07:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:07:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-20 13:07:59,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:07:59,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326388381] [2024-09-20 13:07:59,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326388381] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:07:59,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118929970] [2024-09-20 13:07:59,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:07:59,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:07:59,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:07:59,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:07:59,926 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 13:08:00,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-20 13:08:00,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:08:00,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-20 13:08:00,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:08:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-20 13:08:00,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:08:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-20 13:08:03,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118929970] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:08:03,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:08:03,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-09-20 13:08:03,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845870108] [2024-09-20 13:08:03,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:08:03,174 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 13:08:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:08:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 13:08:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-09-20 13:08:03,175 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-20 13:08:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:08:03,279 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-20 13:08:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 13:08:03,279 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67 [2024-09-20 13:08:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:08:03,280 INFO L225 Difference]: With dead ends: 49 [2024-09-20 13:08:03,280 INFO L226 Difference]: Without dead ends: 45 [2024-09-20 13:08:03,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 13:08:03,281 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:08:03,281 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:08:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-20 13:08:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-20 13:08:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-20 13:08:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-20 13:08:03,289 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-20 13:08:03,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:08:03,289 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-20 13:08:03,290 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-20 13:08:03,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-20 13:08:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-20 13:08:03,292 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:08:03,292 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:08:03,307 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 13:08:03,492 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-20 13:08:03,493 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:08:03,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-20 13:08:03,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:08:03,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478089893] [2024-09-20 13:08:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:08:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:08:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:08:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:08:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-20 13:08:03,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:08:03,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478089893] [2024-09-20 13:08:03,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478089893] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:08:03,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422426540] [2024-09-20 13:08:03,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 13:08:03,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:08:03,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:08:03,945 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:08:03,945 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 13:08:04,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 13:08:04,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:08:04,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 13:08:04,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:08:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-20 13:08:04,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:08:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-20 13:08:08,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422426540] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:08:08,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:08:08,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-09-20 13:08:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596357680] [2024-09-20 13:08:08,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:08:08,377 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 13:08:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:08:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 13:08:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-09-20 13:08:08,378 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-20 13:08:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:08:08,495 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-20 13:08:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 13:08:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73 [2024-09-20 13:08:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:08:08,497 INFO L225 Difference]: With dead ends: 52 [2024-09-20 13:08:08,497 INFO L226 Difference]: Without dead ends: 48 [2024-09-20 13:08:08,497 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 146 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 13:08:08,498 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:08:08,498 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:08:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-20 13:08:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-20 13:08:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-20 13:08:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-20 13:08:08,502 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2024-09-20 13:08:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:08:08,502 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-20 13:08:08,502 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-20 13:08:08,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-20 13:08:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-20 13:08:08,503 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:08:08,503 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:08:08,516 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-20 13:08:08,707 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 13:08:08,708 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:08:08,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 218071268, now seen corresponding path program 11 times [2024-09-20 13:08:08,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:08:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28660496] [2024-09-20 13:08:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:08:08,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:08:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:08,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:08:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:08,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:08:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:08,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:08,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:08,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:08,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-20 13:08:09,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:08:09,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28660496] [2024-09-20 13:08:09,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28660496] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:08:09,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615472927] [2024-09-20 13:08:09,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 13:08:09,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:08:09,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:08:09,176 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:08:09,181 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 13:08:09,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-20 13:08:09,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:08:09,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 13:08:09,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:08:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-20 13:08:09,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:08:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-20 13:08:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615472927] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:08:14,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:08:14,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-09-20 13:08:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907151938] [2024-09-20 13:08:14,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:08:14,844 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 13:08:14,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:08:14,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 13:08:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-09-20 13:08:14,845 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-20 13:08:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:08:14,975 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-20 13:08:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 13:08:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79 [2024-09-20 13:08:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:08:14,977 INFO L225 Difference]: With dead ends: 55 [2024-09-20 13:08:14,977 INFO L226 Difference]: Without dead ends: 51 [2024-09-20 13:08:14,977 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 13:08:14,978 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:08:14,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:08:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-20 13:08:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-20 13:08:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-20 13:08:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-20 13:08:14,982 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2024-09-20 13:08:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:08:14,983 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-20 13:08:14,983 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-20 13:08:14,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:14,983 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-20 13:08:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-20 13:08:14,984 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:08:14,984 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:08:14,996 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-20 13:08:15,187 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:08:15,187 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:08:15,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:15,188 INFO L85 PathProgramCache]: Analyzing trace with hash -313649636, now seen corresponding path program 12 times [2024-09-20 13:08:15,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:08:15,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145285903] [2024-09-20 13:08:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:08:15,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:08:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:08:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:08:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-20 13:08:15,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:08:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145285903] [2024-09-20 13:08:15,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145285903] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:08:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766305013] [2024-09-20 13:08:15,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 13:08:15,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:08:15,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:08:15,809 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) [2024-09-20 13:08:15,810 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 13:08:16,097 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-20 13:08:16,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:08:16,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-20 13:08:16,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:08:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-20 13:08:16,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:08:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-20 13:08:23,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766305013] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:08:23,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:08:23,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-09-20 13:08:23,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490756954] [2024-09-20 13:08:23,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:08:23,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 13:08:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:08:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 13:08:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-09-20 13:08:23,021 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-20 13:08:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:08:23,184 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-09-20 13:08:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 13:08:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85 [2024-09-20 13:08:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:08:23,185 INFO L225 Difference]: With dead ends: 58 [2024-09-20 13:08:23,185 INFO L226 Difference]: Without dead ends: 54 [2024-09-20 13:08:23,187 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 13:08:23,188 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:08:23,188 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:08:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-20 13:08:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-20 13:08:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-20 13:08:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-09-20 13:08:23,199 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2024-09-20 13:08:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:08:23,199 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-09-20 13:08:23,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-20 13:08:23,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-09-20 13:08:23,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-20 13:08:23,200 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:08:23,200 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:08:23,220 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-20 13:08:23,405 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 [2024-09-20 13:08:23,406 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:08:23,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1407532516, now seen corresponding path program 13 times [2024-09-20 13:08:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:08:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486294971] [2024-09-20 13:08:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:08:23,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:08:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:08:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:08:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:23,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:24,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:24,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:24,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:24,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-20 13:08:24,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:08:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486294971] [2024-09-20 13:08:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486294971] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:08:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127962501] [2024-09-20 13:08:24,081 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 13:08:24,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:08:24,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:08:24,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:08:24,084 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 13:08:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:24,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 13:08:24,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:08:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-20 13:08:24,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:08:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-20 13:08:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127962501] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:08:33,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:08:33,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-09-20 13:08:33,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754382012] [2024-09-20 13:08:33,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:08:33,007 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 13:08:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:08:33,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 13:08:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 13:08:33,008 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-20 13:08:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:08:33,148 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-09-20 13:08:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 13:08:33,149 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91 [2024-09-20 13:08:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:08:33,150 INFO L225 Difference]: With dead ends: 61 [2024-09-20 13:08:33,150 INFO L226 Difference]: Without dead ends: 57 [2024-09-20 13:08:33,150 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 13:08:33,151 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:08:33,151 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:08:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-20 13:08:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-20 13:08:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-09-20 13:08:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-20 13:08:33,155 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2024-09-20 13:08:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:08:33,156 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-20 13:08:33,156 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-20 13:08:33,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:33,156 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-20 13:08:33,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-20 13:08:33,156 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:08:33,157 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:08:33,170 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-20 13:08:33,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 13:08:33,357 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:08:33,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1575356700, now seen corresponding path program 14 times [2024-09-20 13:08:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:08:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802195866] [2024-09-20 13:08:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:08:33,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:08:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:08:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:08:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:33,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:34,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:34,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:34,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-20 13:08:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:08:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802195866] [2024-09-20 13:08:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802195866] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:08:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300810637] [2024-09-20 13:08:34,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:08:34,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:08:34,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:08:34,071 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:08:34,074 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 13:08:34,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:08:34,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:08:34,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 13:08:34,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:08:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-20 13:08:34,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:08:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-20 13:08:45,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300810637] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:08:45,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:08:45,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 35 [2024-09-20 13:08:45,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892130905] [2024-09-20 13:08:45,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:08:45,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 13:08:45,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:08:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 13:08:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 13:08:45,047 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-20 13:08:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:08:45,211 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-09-20 13:08:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 13:08:45,211 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) Word has length 97 [2024-09-20 13:08:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:08:45,212 INFO L225 Difference]: With dead ends: 64 [2024-09-20 13:08:45,212 INFO L226 Difference]: Without dead ends: 60 [2024-09-20 13:08:45,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=785, Invalid=1567, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 13:08:45,213 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 179 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:08:45,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 148 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:08:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-20 13:08:45,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-20 13:08:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-09-20 13:08:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-20 13:08:45,221 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2024-09-20 13:08:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:08:45,222 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-20 13:08:45,222 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-20 13:08:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-20 13:08:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-20 13:08:45,223 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:08:45,223 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:08:45,238 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-20 13:08:45,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 13:08:45,423 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 13:08:45,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash 12270308, now seen corresponding path program 15 times [2024-09-20 13:08:45,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:08:45,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999270860] [2024-09-20 13:08:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:08:45,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:08:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:45,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 13:08:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:45,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 13:08:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:46,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:46,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:46,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:46,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:46,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-20 13:08:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:08:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-09-20 13:08:47,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:08:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999270860] [2024-09-20 13:08:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999270860] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:08:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445677131] [2024-09-20 13:08:47,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:08:47,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:08:47,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:08:47,663 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:08:47,664 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 13:08:48,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-20 13:08:48,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:08:48,260 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-09-20 13:08:48,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:08:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-09-20 13:08:48,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:08:48,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445677131] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:08:48,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:08:48,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2024-09-20 13:08:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394535598] [2024-09-20 13:08:48,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:08:48,406 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 13:08:48,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:08:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 13:08:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:08:48,407 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 13:08:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:08:48,450 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-09-20 13:08:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 13:08:48,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2024-09-20 13:08:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:08:48,451 INFO L225 Difference]: With dead ends: 60 [2024-09-20 13:08:48,451 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:08:48,451 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-20 13:08:48,452 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:08:48,452 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:08:48,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:08:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:08:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:08:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:08:48,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-09-20 13:08:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:08:48,453 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:08:48,453 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-20 13:08:48,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:08:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:08:48,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:08:48,455 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 13:08:48,470 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-20 13:08:48,659 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 13:08:48,662 INFO L408 BasicCegarLoop]: Path program histogram: [15, 1] [2024-09-20 13:08:48,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 13:08:48,976 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:08:48,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:08:48 BoogieIcfgContainer [2024-09-20 13:08:48,987 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:08:48,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 13:08:48,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 13:08:48,988 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 13:08:48,988 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:46" (3/4) ... [2024-09-20 13:08:48,990 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 13:08:49,025 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 13:08:49,025 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 13:08:49,025 INFO L158 Benchmark]: Toolchain (without parser) took 62840.46ms. Allocated memory was 201.3MB in the beginning and 1.1GB in the end (delta: 861.9MB). Free memory was 171.9MB in the beginning and 772.0MB in the end (delta: -600.1MB). Peak memory consumption was 261.9MB. Max. memory is 16.1GB. [2024-09-20 13:08:49,025 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 138.4MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:08:49,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.38ms. Allocated memory is still 201.3MB. Free memory was 171.7MB in the beginning and 164.4MB in the end (delta: 7.2MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-09-20 13:08:49,026 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.08ms. Allocated memory is still 201.3MB. Free memory was 164.4MB in the beginning and 163.6MB in the end (delta: 855.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:08:49,026 INFO L158 Benchmark]: Boogie Preprocessor took 27.32ms. Allocated memory is still 201.3MB. Free memory was 163.6MB in the beginning and 161.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:08:49,026 INFO L158 Benchmark]: RCFGBuilder took 251.14ms. Allocated memory is still 201.3MB. Free memory was 161.5MB in the beginning and 150.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 13:08:49,027 INFO L158 Benchmark]: TraceAbstraction took 62311.56ms. Allocated memory was 201.3MB in the beginning and 1.1GB in the end (delta: 861.9MB). Free memory was 149.8MB in the beginning and 774.1MB in the end (delta: -624.3MB). Peak memory consumption was 238.7MB. Max. memory is 16.1GB. [2024-09-20 13:08:49,028 INFO L158 Benchmark]: Witness Printer took 37.12ms. Allocated memory is still 1.1GB. Free memory was 774.1MB in the beginning and 772.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:08:49,031 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 138.4MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.38ms. Allocated memory is still 201.3MB. Free memory was 171.7MB in the beginning and 164.4MB in the end (delta: 7.2MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.08ms. Allocated memory is still 201.3MB. Free memory was 164.4MB in the beginning and 163.6MB in the end (delta: 855.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.32ms. Allocated memory is still 201.3MB. Free memory was 163.6MB in the beginning and 161.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 251.14ms. Allocated memory is still 201.3MB. Free memory was 161.5MB in the beginning and 150.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 62311.56ms. Allocated memory was 201.3MB in the beginning and 1.1GB in the end (delta: 861.9MB). Free memory was 149.8MB in the beginning and 774.1MB in the end (delta: -624.3MB). Peak memory consumption was 238.7MB. Max. memory is 16.1GB. * Witness Printer took 37.12ms. Allocated memory is still 1.1GB. Free memory was 774.1MB in the beginning and 772.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.9s, OverallIterations: 16, TraceHistogramMax: 16, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1144 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 993 mSDsluCounter, 1525 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1333 mSDsCounter, 428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1223 IncrementalHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 428 mSolverCounterUnsat, 192 mSDtfsCounter, 1223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2324 GetRequests, 1792 SyntacticMatches, 120 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5371 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=15, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 54.0s InterpolantComputationTime, 1843 NumberOfCodeBlocks, 1843 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 2610 ConstructedInterpolants, 0 QuantifiedInterpolants, 7780 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2970 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 45 InterpolantComputations, 2 PerfectInterpolantSequences, 5060/10830 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == ((long long) \old(n) + \old(m))) RESULT: Ultimate proved your program to be correct! [2024-09-20 13:08:49,061 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE