./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/id_i20_o20-1.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 c3376ee309c42e8280cfc81381fd928e4a895fffc424cbfa81d01112976a2d85 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 11:28:12,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:28:12,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:28:13,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:28:13,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:28:13,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:28:13,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:28:13,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:28:13,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:28:13,041 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:28:13,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:28:13,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:28:13,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:28:13,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:28:13,046 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:28:13,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:28:13,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:28:13,047 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:28:13,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:28:13,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:28:13,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:28:13,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:28:13,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:28:13,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:28:13,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:28:13,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:28:13,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:28:13,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:28:13,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:28:13,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:28:13,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:28:13,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:28:13,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:28:13,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:28:13,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:28:13,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:28:13,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:28:13,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:28:13,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:28:13,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:28:13,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:28:13,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:28:13,059 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 -> c3376ee309c42e8280cfc81381fd928e4a895fffc424cbfa81d01112976a2d85 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true 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 [2024-09-25 11:28:13,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:28:13,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:28:13,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:28:13,426 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:28:13,426 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:28:13,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2024-09-25 11:28:14,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:28:15,090 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:28:15,091 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2024-09-25 11:28:15,097 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c4f342453/0af509f146404d178e845217520e957a/FLAG90a334eb2 [2024-09-25 11:28:15,109 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c4f342453/0af509f146404d178e845217520e957a [2024-09-25 11:28:15,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:28:15,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:28:15,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:28:15,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:28:15,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:28:15,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24628b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15, skipping insertion in model container [2024-09-25 11:28:15,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,145 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:28:15,310 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/id_i20_o20-1.c[454,467] [2024-09-25 11:28:15,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:28:15,328 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:28:15,345 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/id_i20_o20-1.c[454,467] [2024-09-25 11:28:15,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:28:15,363 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:28:15,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15 WrapperNode [2024-09-25 11:28:15,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:28:15,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:28:15,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:28:15,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:28:15,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,385 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:28:15,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:28:15,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:28:15,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:28:15,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:28:15,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,417 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]. [2024-09-25 11:28:15,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:28:15,430 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:28:15,430 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:28:15,430 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:28:15,431 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (1/1) ... [2024-09-25 11:28:15,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:28:15,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:15,468 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) [2024-09-25 11:28:15,472 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 [2024-09-25 11:28:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:28:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:28:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:28:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:28:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:28:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:28:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:28:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:28:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-09-25 11:28:15,522 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-09-25 11:28:15,588 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:28:15,591 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:28:15,740 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-25 11:28:15,741 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:28:15,769 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:28:15,769 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 11:28:15,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:28:15 BoogieIcfgContainer [2024-09-25 11:28:15,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:28:15,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:28:15,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:28:15,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:28:15,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:28:15" (1/3) ... [2024-09-25 11:28:15,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:28:15, skipping insertion in model container [2024-09-25 11:28:15,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:28:15" (2/3) ... [2024-09-25 11:28:15,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f0838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:28:15, skipping insertion in model container [2024-09-25 11:28:15,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:28:15" (3/3) ... [2024-09-25 11:28:15,780 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i20_o20-1.c [2024-09-25 11:28:15,795 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:28:15,796 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:28:15,851 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:28:15,860 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;@505b59df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:28:15,860 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:28:15,864 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) [2024-09-25 11:28:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 11:28:15,874 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:15,874 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:15,875 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:15,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:15,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2082045565, now seen corresponding path program 1 times [2024-09-25 11:28:15,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:15,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509587719] [2024-09-25 11:28:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 11:28:16,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:16,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509587719] [2024-09-25 11:28:16,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509587719] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:28:16,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:28:16,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:28:16,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505400373] [2024-09-25 11:28:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:28:16,166 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:28:16,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:16,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:28:16,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:28:16,188 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) [2024-09-25 11:28:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:16,253 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-25 11:28:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:28:16,256 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 [2024-09-25 11:28:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:16,261 INFO L225 Difference]: With dead ends: 30 [2024-09-25 11:28:16,261 INFO L226 Difference]: Without dead ends: 18 [2024-09-25 11:28:16,264 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 [2024-09-25 11:28:16,268 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:16,268 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-25 11:28:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-25 11:28:16,305 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) [2024-09-25 11:28:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-25 11:28:16,307 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-25 11:28:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:16,307 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-25 11:28:16,308 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) [2024-09-25 11:28:16,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:16,309 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-25 11:28:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-25 11:28:16,310 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:16,310 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:16,310 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:28:16,311 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:16,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:16,311 INFO L85 PathProgramCache]: Analyzing trace with hash -799337521, now seen corresponding path program 1 times [2024-09-25 11:28:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:16,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294641400] [2024-09-25 11:28:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:16,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 11:28:16,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:16,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294641400] [2024-09-25 11:28:16,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294641400] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:16,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949683193] [2024-09-25 11:28:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:16,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:16,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:16,590 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) [2024-09-25 11:28:16,593 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 11:28:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:16,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 11:28:16,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 11:28:16,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 11:28:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949683193] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:17,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-09-25 11:28:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761522955] [2024-09-25 11:28:17,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:17,007 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 11:28:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 11:28:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-09-25 11:28:17,010 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 11:28:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:17,069 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-25 11:28:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 11:28:17,070 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-25 11:28:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:17,071 INFO L225 Difference]: With dead ends: 25 [2024-09-25 11:28:17,072 INFO L226 Difference]: Without dead ends: 21 [2024-09-25 11:28:17,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:28:17,074 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:17,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 50 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-25 11:28:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-25 11:28:17,086 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) [2024-09-25 11:28:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-25 11:28:17,087 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-25 11:28:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:17,088 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-25 11:28:17,088 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 11:28:17,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-25 11:28:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-25 11:28:17,090 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:17,090 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:17,107 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 11:28:17,294 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 [2024-09-25 11:28:17,295 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:17,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1955994435, now seen corresponding path program 2 times [2024-09-25 11:28:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:17,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499618482] [2024-09-25 11:28:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:17,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:17,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:17,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:17,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:17,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-25 11:28:17,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:17,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499618482] [2024-09-25 11:28:17,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499618482] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:17,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082139251] [2024-09-25 11:28:17,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:28:17,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:17,580 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) [2024-09-25 11:28:17,582 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 11:28:17,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:28:17,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:17,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 11:28:17,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 11:28:17,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 11:28:18,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082139251] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:18,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:18,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2024-09-25 11:28:18,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525536375] [2024-09-25 11:28:18,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:18,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 11:28:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 11:28:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-09-25 11:28:18,036 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 7 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 11:28:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:18,108 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-25 11:28:18,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 11:28:18,108 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 7 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-25 11:28:18,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:18,110 INFO L225 Difference]: With dead ends: 28 [2024-09-25 11:28:18,111 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 11:28:18,112 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2024-09-25 11:28:18,113 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:18,114 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 80 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 11:28:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-25 11:28:18,123 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) [2024-09-25 11:28:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-25 11:28:18,125 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-25 11:28:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:18,125 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-25 11:28:18,125 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 14 states have internal predecessors, (25), 7 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-25 11:28:18,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-25 11:28:18,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-25 11:28:18,127 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:18,128 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:18,144 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 11:28:18,331 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 [2024-09-25 11:28:18,332 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:18,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1072241521, now seen corresponding path program 3 times [2024-09-25 11:28:18,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:18,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149411004] [2024-09-25 11:28:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:18,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:18,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:18,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:18,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:18,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-25 11:28:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149411004] [2024-09-25 11:28:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149411004] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435393421] [2024-09-25 11:28:18,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:28:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:18,590 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) [2024-09-25 11:28:18,592 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 11:28:18,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 11:28:18,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:18,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:28:18,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:28:18,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:28:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435393421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:19,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:19,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 16 [2024-09-25 11:28:19,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672575141] [2024-09-25 11:28:19,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:19,254 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 11:28:19,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 11:28:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-09-25 11:28:19,256 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 8 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 11:28:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:19,331 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-25 11:28:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 11:28:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 8 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-25 11:28:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:19,333 INFO L225 Difference]: With dead ends: 31 [2024-09-25 11:28:19,334 INFO L226 Difference]: Without dead ends: 27 [2024-09-25 11:28:19,334 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-09-25 11:28:19,335 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 74 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 [2024-09-25 11:28:19,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 74 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-25 11:28:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-25 11:28:19,345 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) [2024-09-25 11:28:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-25 11:28:19,348 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-25 11:28:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:19,348 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-25 11:28:19,348 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 16 states have internal predecessors, (29), 8 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-25 11:28:19,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-25 11:28:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 11:28:19,349 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:19,349 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:19,363 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 11:28:19,550 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 [2024-09-25 11:28:19,550 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:19,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash -790562051, now seen corresponding path program 4 times [2024-09-25 11:28:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:19,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711659227] [2024-09-25 11:28:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:19,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:19,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:19,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:19,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:19,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:19,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-25 11:28:19,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:19,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711659227] [2024-09-25 11:28:19,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711659227] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:19,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787659095] [2024-09-25 11:28:19,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:28:19,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:19,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:19,814 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) [2024-09-25 11:28:19,816 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 11:28:19,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:28:19,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:19,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 11:28:19,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 11:28:19,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 11:28:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787659095] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:20,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:20,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 18 [2024-09-25 11:28:20,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959618972] [2024-09-25 11:28:20,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:20,710 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 11:28:20,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:20,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 11:28:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-09-25 11:28:20,712 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 9 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-25 11:28:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:20,788 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-25 11:28:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 11:28:20,789 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 9 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-25 11:28:20,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:20,790 INFO L225 Difference]: With dead ends: 34 [2024-09-25 11:28:20,790 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 11:28:20,790 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2024-09-25 11:28:20,791 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:20,791 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 11:28:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 11:28:20,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 11:28:20,797 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) [2024-09-25 11:28:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-25 11:28:20,797 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-25 11:28:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:20,798 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-25 11:28:20,798 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 18 states have internal predecessors, (33), 9 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-25 11:28:20,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-25 11:28:20,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-25 11:28:20,800 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:20,800 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:20,816 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 11:28:21,000 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 [2024-09-25 11:28:21,001 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash 446137679, now seen corresponding path program 5 times [2024-09-25 11:28:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645641338] [2024-09-25 11:28:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:21,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-25 11:28:21,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:21,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645641338] [2024-09-25 11:28:21,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645641338] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:21,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542539630] [2024-09-25 11:28:21,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:28:21,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:21,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:21,263 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) [2024-09-25 11:28:21,264 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 11:28:21,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-25 11:28:21,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:21,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 11:28:21,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 11:28:21,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:28:22,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542539630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:22,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:22,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 20 [2024-09-25 11:28:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177431783] [2024-09-25 11:28:22,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:22,459 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 11:28:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 11:28:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2024-09-25 11:28:22,460 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 11:28:22,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:22,560 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-25 11:28:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 11:28:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-25 11:28:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:22,563 INFO L225 Difference]: With dead ends: 37 [2024-09-25 11:28:22,563 INFO L226 Difference]: Without dead ends: 33 [2024-09-25 11:28:22,564 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2024-09-25 11:28:22,565 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:22,565 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 86 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-25 11:28:22,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-25 11:28:22,578 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) [2024-09-25 11:28:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-25 11:28:22,579 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-25 11:28:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:22,581 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-25 11:28:22,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 20 states have internal predecessors, (37), 10 states have call successors, (11), 1 states have call predecessors, (11), 8 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-25 11:28:22,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-25 11:28:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-25 11:28:22,583 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:22,583 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:22,596 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 11:28:22,784 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 [2024-09-25 11:28:22,784 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:22,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1764409661, now seen corresponding path program 6 times [2024-09-25 11:28:22,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:22,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285764550] [2024-09-25 11:28:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:22,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:22,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:22,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:22,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:22,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:23,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:23,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:23,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:23,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-09-25 11:28:23,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:23,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285764550] [2024-09-25 11:28:23,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285764550] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:23,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317780211] [2024-09-25 11:28:23,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:28:23,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:23,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:23,161 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) [2024-09-25 11:28:23,163 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 11:28:23,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-25 11:28:23,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:23,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 11:28:23,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-25 11:28:23,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-25 11:28:24,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317780211] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:24,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:24,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 17] total 22 [2024-09-25 11:28:24,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384918480] [2024-09-25 11:28:24,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:24,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 11:28:24,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:24,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 11:28:24,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-09-25 11:28:24,842 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 11 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-25 11:28:24,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:24,943 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-25 11:28:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 11:28:24,944 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 11 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-25 11:28:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:24,945 INFO L225 Difference]: With dead ends: 40 [2024-09-25 11:28:24,945 INFO L226 Difference]: Without dead ends: 36 [2024-09-25 11:28:24,946 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2024-09-25 11:28:24,947 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 56 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:24,947 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 92 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-25 11:28:24,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-25 11:28:24,959 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) [2024-09-25 11:28:24,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-25 11:28:24,960 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-25 11:28:24,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:24,960 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-25 11:28:24,961 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.05) internal successors, (41), 22 states have internal predecessors, (41), 11 states have call successors, (12), 1 states have call predecessors, (12), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-25 11:28:24,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-25 11:28:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-25 11:28:24,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:24,965 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:24,982 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 11:28:25,166 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 [2024-09-25 11:28:25,167 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:25,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:25,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1097922063, now seen corresponding path program 7 times [2024-09-25 11:28:25,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:25,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078429952] [2024-09-25 11:28:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-09-25 11:28:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078429952] [2024-09-25 11:28:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078429952] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007957857] [2024-09-25 11:28:25,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:28:25,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:25,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:25,513 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) [2024-09-25 11:28:25,515 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 11:28:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:25,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 11:28:25,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-25 11:28:25,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 11:28:27,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007957857] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:27,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:27,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 24 [2024-09-25 11:28:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579985042] [2024-09-25 11:28:27,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:27,562 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 11:28:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 11:28:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2024-09-25 11:28:27,563 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 12 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-25 11:28:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:27,674 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-25 11:28:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 11:28:27,675 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 12 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-25 11:28:27,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:27,678 INFO L225 Difference]: With dead ends: 43 [2024-09-25 11:28:27,678 INFO L226 Difference]: Without dead ends: 39 [2024-09-25 11:28:27,679 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=637, Unknown=0, NotChecked=0, Total=930 [2024-09-25 11:28:27,679 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 81 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:27,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 116 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-25 11:28:27,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-25 11:28:27,690 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) [2024-09-25 11:28:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-25 11:28:27,691 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-25 11:28:27,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:27,695 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-25 11:28:27,695 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 24 states have internal predecessors, (45), 12 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-25 11:28:27,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-25 11:28:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 11:28:27,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:27,696 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:27,715 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 11:28:27,897 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 [2024-09-25 11:28:27,897 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:27,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:27,898 INFO L85 PathProgramCache]: Analyzing trace with hash 401815421, now seen corresponding path program 8 times [2024-09-25 11:28:27,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:27,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618193146] [2024-09-25 11:28:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:27,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:27,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:27,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-09-25 11:28:28,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:28,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618193146] [2024-09-25 11:28:28,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618193146] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:28,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456928624] [2024-09-25 11:28:28,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:28:28,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:28,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:28,292 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) [2024-09-25 11:28:28,293 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 11:28:28,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:28:28,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:28,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-25 11:28:28,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 11:28:28,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-25 11:28:30,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456928624] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:30,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:30,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 26 [2024-09-25 11:28:30,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277635418] [2024-09-25 11:28:30,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:30,973 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 11:28:30,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 11:28:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2024-09-25 11:28:30,974 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-25 11:28:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:31,080 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-25 11:28:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 11:28:31,080 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-25 11:28:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:31,081 INFO L225 Difference]: With dead ends: 46 [2024-09-25 11:28:31,082 INFO L226 Difference]: Without dead ends: 42 [2024-09-25 11:28:31,083 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 120 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=767, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 11:28:31,084 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:31,084 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 121 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-25 11:28:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-25 11:28:31,089 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) [2024-09-25 11:28:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-25 11:28:31,090 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-25 11:28:31,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:31,090 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-25 11:28:31,091 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-25 11:28:31,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-25 11:28:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-25 11:28:31,092 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:31,092 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:31,106 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-25 11:28:31,296 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 [2024-09-25 11:28:31,297 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:31,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash -281594161, now seen corresponding path program 9 times [2024-09-25 11:28:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:31,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537640307] [2024-09-25 11:28:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:31,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-09-25 11:28:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537640307] [2024-09-25 11:28:31,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537640307] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:31,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263385245] [2024-09-25 11:28:31,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:28:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:31,816 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) [2024-09-25 11:28:31,817 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 11:28:31,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-25 11:28:31,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:31,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 11:28:31,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-25 11:28:32,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 11:28:35,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263385245] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:35,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:35,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 28 [2024-09-25 11:28:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338585868] [2024-09-25 11:28:35,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:35,351 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 11:28:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 11:28:35,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2024-09-25 11:28:35,369 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 11:28:35,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:35,486 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-25 11:28:35,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 11:28:35,486 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67 [2024-09-25 11:28:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:35,487 INFO L225 Difference]: With dead ends: 49 [2024-09-25 11:28:35,487 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 11:28:35,488 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 132 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=423, Invalid=909, Unknown=0, NotChecked=0, Total=1332 [2024-09-25 11:28:35,488 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 59 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:35,489 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 144 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 11:28:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-25 11:28:35,494 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) [2024-09-25 11:28:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-25 11:28:35,495 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-25 11:28:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:35,496 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-25 11:28:35,496 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 28 states have internal predecessors, (53), 14 states have call successors, (15), 1 states have call predecessors, (15), 12 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 11:28:35,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-25 11:28:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-25 11:28:35,497 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:35,497 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:35,516 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 11:28:35,701 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 [2024-09-25 11:28:35,702 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:35,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash 132537789, now seen corresponding path program 10 times [2024-09-25 11:28:35,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:35,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309801736] [2024-09-25 11:28:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:35,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:35,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:35,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:35,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:35,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-09-25 11:28:36,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:36,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309801736] [2024-09-25 11:28:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309801736] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:36,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890427835] [2024-09-25 11:28:36,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:28:36,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:36,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:36,302 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) [2024-09-25 11:28:36,303 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 11:28:36,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:28:36,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:36,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 11:28:36,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-25 11:28:36,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-25 11:28:40,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890427835] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:40,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 25] total 30 [2024-09-25 11:28:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133769013] [2024-09-25 11:28:40,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:40,998 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 11:28:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 11:28:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=633, Unknown=0, NotChecked=0, Total=870 [2024-09-25 11:28:41,000 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 30 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 30 states have internal predecessors, (57), 15 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 11:28:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:41,114 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-25 11:28:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 11:28:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 30 states have internal predecessors, (57), 15 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73 [2024-09-25 11:28:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:41,115 INFO L225 Difference]: With dead ends: 52 [2024-09-25 11:28:41,116 INFO L226 Difference]: Without dead ends: 48 [2024-09-25 11:28:41,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=497, Invalid=1063, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 11:28:41,117 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:41,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 132 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:41,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-25 11:28:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-25 11:28:41,122 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) [2024-09-25 11:28:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-25 11:28:41,123 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2024-09-25 11:28:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:41,123 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-25 11:28:41,124 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 30 states have internal predecessors, (57), 15 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 11:28:41,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-25 11:28:41,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-25 11:28:41,125 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:41,125 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:41,138 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 11:28:41,325 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 [2024-09-25 11:28:41,326 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:41,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2004764559, now seen corresponding path program 11 times [2024-09-25 11:28:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:41,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428966060] [2024-09-25 11:28:41,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:41,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-09-25 11:28:41,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428966060] [2024-09-25 11:28:41,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428966060] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:41,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469415253] [2024-09-25 11:28:41,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:28:41,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:41,977 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) [2024-09-25 11:28:41,978 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 11:28:42,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-25 11:28:42,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:42,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 11:28:42,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-25 11:28:42,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-25 11:28:47,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469415253] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:47,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:47,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 32 [2024-09-25 11:28:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834252822] [2024-09-25 11:28:47,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:47,830 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-25 11:28:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-25 11:28:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2024-09-25 11:28:47,832 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 32 states have internal predecessors, (61), 16 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 11:28:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:47,985 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-25 11:28:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 11:28:47,986 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 32 states have internal predecessors, (61), 16 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79 [2024-09-25 11:28:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:47,988 INFO L225 Difference]: With dead ends: 55 [2024-09-25 11:28:47,989 INFO L226 Difference]: Without dead ends: 51 [2024-09-25 11:28:47,990 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 156 SyntacticMatches, 12 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=577, Invalid=1229, Unknown=0, NotChecked=0, Total=1806 [2024-09-25 11:28:47,991 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:47,991 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 161 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-25 11:28:48,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-25 11:28:48,003 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) [2024-09-25 11:28:48,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-25 11:28:48,004 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2024-09-25 11:28:48,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:48,004 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-25 11:28:48,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.033333333333333) internal successors, (61), 32 states have internal predecessors, (61), 16 states have call successors, (17), 1 states have call predecessors, (17), 14 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 11:28:48,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-25 11:28:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-25 11:28:48,005 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:48,006 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:48,022 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-25 11:28:48,206 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 [2024-09-25 11:28:48,206 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:48,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:48,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1968163843, now seen corresponding path program 12 times [2024-09-25 11:28:48,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:48,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113865960] [2024-09-25 11:28:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:48,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-09-25 11:28:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113865960] [2024-09-25 11:28:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113865960] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348878824] [2024-09-25 11:28:48,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:28:48,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:48,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:48,925 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) [2024-09-25 11:28:48,927 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 11:28:49,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-25 11:28:49,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:28:49,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-25 11:28:49,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-25 11:28:49,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:28:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-25 11:28:56,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348878824] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:28:56,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:28:56,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 29] total 34 [2024-09-25 11:28:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697906001] [2024-09-25 11:28:56,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:28:56,540 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 11:28:56,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:28:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 11:28:56,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 11:28:56,542 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 17 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 11:28:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:28:56,712 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-09-25 11:28:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 11:28:56,713 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 17 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85 [2024-09-25 11:28:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:28:56,714 INFO L225 Difference]: With dead ends: 58 [2024-09-25 11:28:56,714 INFO L226 Difference]: Without dead ends: 54 [2024-09-25 11:28:56,715 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 168 SyntacticMatches, 13 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=663, Invalid=1407, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 11:28:56,717 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:28:56,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 171 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:28:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-25 11:28:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-25 11:28:56,728 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) [2024-09-25 11:28:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-09-25 11:28:56,729 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2024-09-25 11:28:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:28:56,730 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-09-25 11:28:56,730 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.03125) internal successors, (65), 34 states have internal predecessors, (65), 17 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 11:28:56,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-09-25 11:28:56,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-25 11:28:56,732 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:28:56,732 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:28:56,752 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-25 11:28:56,933 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 [2024-09-25 11:28:56,933 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:28:56,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:28:56,933 INFO L85 PathProgramCache]: Analyzing trace with hash 114960463, now seen corresponding path program 13 times [2024-09-25 11:28:56,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:28:56,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149308453] [2024-09-25 11:28:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:28:56,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:28:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:28:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:28:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:28:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-25 11:28:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:28:57,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149308453] [2024-09-25 11:28:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149308453] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:28:57,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607535706] [2024-09-25 11:28:57,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:28:57,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:28:57,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:28:57,746 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) [2024-09-25 11:28:57,748 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 11:28:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:28:58,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 11:28:58,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:28:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-25 11:28:58,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 11:29:07,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607535706] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:07,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 36 [2024-09-25 11:29:07,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804631999] [2024-09-25 11:29:07,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:07,241 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-25 11:29:07,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:07,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-25 11:29:07,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2024-09-25 11:29:07,242 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 11:29:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:07,428 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-09-25 11:29:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 11:29:07,429 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91 [2024-09-25 11:29:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:07,430 INFO L225 Difference]: With dead ends: 61 [2024-09-25 11:29:07,430 INFO L226 Difference]: Without dead ends: 57 [2024-09-25 11:29:07,431 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 180 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=755, Invalid=1597, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 11:29:07,432 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:07,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 171 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-25 11:29:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-25 11:29:07,439 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) [2024-09-25 11:29:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-25 11:29:07,440 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2024-09-25 11:29:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:07,443 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-25 11:29:07,443 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.0294117647058822) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 11:29:07,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-25 11:29:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-25 11:29:07,445 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:07,445 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:07,467 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-25 11:29:07,645 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 [2024-09-25 11:29:07,645 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:07,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:07,646 INFO L85 PathProgramCache]: Analyzing trace with hash -654525891, now seen corresponding path program 14 times [2024-09-25 11:29:07,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:07,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662219726] [2024-09-25 11:29:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:07,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:07,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:07,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:07,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-09-25 11:29:08,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662219726] [2024-09-25 11:29:08,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662219726] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:08,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708770754] [2024-09-25 11:29:08,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:29:08,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:08,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:08,572 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) [2024-09-25 11:29:08,574 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 11:29:09,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:29:09,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:09,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-25 11:29:09,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-25 11:29:09,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-25 11:29:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708770754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:20,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:20,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 33] total 38 [2024-09-25 11:29:20,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848413627] [2024-09-25 11:29:20,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:20,790 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-25 11:29:20,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:20,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-25 11:29:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 11:29:20,794 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 38 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 38 states have internal predecessors, (73), 19 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) [2024-09-25 11:29:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:20,976 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-09-25 11:29:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 11:29:20,977 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 38 states have internal predecessors, (73), 19 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) Word has length 97 [2024-09-25 11:29:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:20,978 INFO L225 Difference]: With dead ends: 64 [2024-09-25 11:29:20,978 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 11:29:20,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 192 SyntacticMatches, 15 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=853, Invalid=1799, Unknown=0, NotChecked=0, Total=2652 [2024-09-25 11:29:20,979 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 96 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:20,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 178 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 11:29:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-25 11:29:20,987 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) [2024-09-25 11:29:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-25 11:29:20,988 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2024-09-25 11:29:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:20,988 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-25 11:29:20,988 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 38 states have internal predecessors, (73), 19 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) [2024-09-25 11:29:20,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-25 11:29:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-25 11:29:20,989 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:20,990 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:21,005 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-25 11:29:21,190 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 [2024-09-25 11:29:21,190 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:21,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:21,191 INFO L85 PathProgramCache]: Analyzing trace with hash -488711921, now seen corresponding path program 15 times [2024-09-25 11:29:21,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:21,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921101989] [2024-09-25 11:29:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:21,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:22,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:22,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:22,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:22,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:22,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:22,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-09-25 11:29:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921101989] [2024-09-25 11:29:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921101989] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811191181] [2024-09-25 11:29:22,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:29:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:22,192 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) [2024-09-25 11:29:22,193 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 11:29:22,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-25 11:29:22,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:22,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-25 11:29:22,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-09-25 11:29:22,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-25 11:29:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811191181] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:37,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:37,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 40 [2024-09-25 11:29:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511825324] [2024-09-25 11:29:37,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:37,006 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-25 11:29:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-25 11:29:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2024-09-25 11:29:37,011 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 20 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48) [2024-09-25 11:29:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:37,223 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-09-25 11:29:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-25 11:29:37,223 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 20 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48) Word has length 103 [2024-09-25 11:29:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:37,224 INFO L225 Difference]: With dead ends: 67 [2024-09-25 11:29:37,224 INFO L226 Difference]: Without dead ends: 63 [2024-09-25 11:29:37,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 204 SyntacticMatches, 16 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=957, Invalid=2013, Unknown=0, NotChecked=0, Total=2970 [2024-09-25 11:29:37,226 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 225 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:37,226 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 211 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-25 11:29:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-09-25 11:29:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2024-09-25 11:29:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-25 11:29:37,232 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 103 [2024-09-25 11:29:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:37,232 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-25 11:29:37,232 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 20 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (48), 17 states have call predecessors, (48), 20 states have call successors, (48) [2024-09-25 11:29:37,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-25 11:29:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-25 11:29:37,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:37,233 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:37,254 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-25 11:29:37,434 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 [2024-09-25 11:29:37,434 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:37,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -763891587, now seen corresponding path program 16 times [2024-09-25 11:29:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:37,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924217229] [2024-09-25 11:29:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:37,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:37,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:37,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:37,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:37,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:37,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-09-25 11:29:38,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:38,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924217229] [2024-09-25 11:29:38,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924217229] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:38,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256039564] [2024-09-25 11:29:38,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:29:38,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:38,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:38,562 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:29:38,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-25 11:29:39,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:29:39,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:39,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-25 11:29:39,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-09-25 11:29:39,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:29:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-25 11:29:56,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256039564] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:29:56,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:29:56,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 37] total 42 [2024-09-25 11:29:56,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026552949] [2024-09-25 11:29:56,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:29:56,593 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-25 11:29:56,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:29:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-25 11:29:56,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2024-09-25 11:29:56,595 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 42 states, 40 states have (on average 2.025) internal successors, (81), 42 states have internal predecessors, (81), 21 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51) [2024-09-25 11:29:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:29:56,782 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2024-09-25 11:29:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 11:29:56,783 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.025) internal successors, (81), 42 states have internal predecessors, (81), 21 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51) Word has length 109 [2024-09-25 11:29:56,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:29:56,784 INFO L225 Difference]: With dead ends: 70 [2024-09-25 11:29:56,784 INFO L226 Difference]: Without dead ends: 66 [2024-09-25 11:29:56,785 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 216 SyntacticMatches, 17 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1067, Invalid=2239, Unknown=0, NotChecked=0, Total=3306 [2024-09-25 11:29:56,785 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:29:56,785 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 190 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:29:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-25 11:29:56,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-09-25 11:29:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2024-09-25 11:29:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2024-09-25 11:29:56,791 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 109 [2024-09-25 11:29:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:29:56,792 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2024-09-25 11:29:56,792 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 2.025) internal successors, (81), 42 states have internal predecessors, (81), 21 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (51), 18 states have call predecessors, (51), 21 states have call successors, (51) [2024-09-25 11:29:56,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2024-09-25 11:29:56,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-09-25 11:29:56,793 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:29:56,793 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:29:56,811 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-09-25 11:29:56,994 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:56,994 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:29:56,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:29:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1440720433, now seen corresponding path program 17 times [2024-09-25 11:29:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:29:56,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773982884] [2024-09-25 11:29:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:29:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:29:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:29:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:29:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:57,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:29:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:29:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-09-25 11:29:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:29:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773982884] [2024-09-25 11:29:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773982884] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:29:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835825685] [2024-09-25 11:29:58,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:29:58,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:29:58,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:29:58,272 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:29:58,273 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-25 11:29:59,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-09-25 11:29:59,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:29:59,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-25 11:29:59,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:29:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-09-25 11:29:59,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:30:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 11:30:20,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835825685] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:30:20,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:30:20,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 44 [2024-09-25 11:30:20,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533774843] [2024-09-25 11:30:20,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:30:20,092 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-25 11:30:20,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:30:20,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-25 11:30:20,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=1389, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 11:30:20,094 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 22 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54) [2024-09-25 11:30:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:30:20,337 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2024-09-25 11:30:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 11:30:20,338 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 22 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54) Word has length 115 [2024-09-25 11:30:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:30:20,341 INFO L225 Difference]: With dead ends: 73 [2024-09-25 11:30:20,341 INFO L226 Difference]: Without dead ends: 69 [2024-09-25 11:30:20,342 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 228 SyntacticMatches, 18 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1183, Invalid=2477, Unknown=0, NotChecked=0, Total=3660 [2024-09-25 11:30:20,342 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 218 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:30:20,343 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 192 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:30:20,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-25 11:30:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-25 11:30:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2024-09-25 11:30:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-09-25 11:30:20,349 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 115 [2024-09-25 11:30:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:30:20,349 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-09-25 11:30:20,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.0238095238095237) internal successors, (85), 44 states have internal predecessors, (85), 22 states have call successors, (23), 1 states have call predecessors, (23), 20 states have return successors, (54), 19 states have call predecessors, (54), 22 states have call successors, (54) [2024-09-25 11:30:20,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:30:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-09-25 11:30:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-09-25 11:30:20,351 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:30:20,351 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:30:20,370 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-25 11:30:20,551 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-25 11:30:20,552 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:30:20,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:30:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1110583619, now seen corresponding path program 18 times [2024-09-25 11:30:20,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:30:20,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999181266] [2024-09-25 11:30:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:30:20,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:30:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:20,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:30:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:20,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:30:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:20,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:20,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2024-09-25 11:30:21,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:30:21,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999181266] [2024-09-25 11:30:21,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999181266] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:30:21,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593342621] [2024-09-25 11:30:21,934 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:30:21,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:30:21,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:30:21,936 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:30:21,936 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-25 11:30:23,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-25 11:30:23,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:30:23,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-25 11:30:23,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:30:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-09-25 11:30:23,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:30:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-09-25 11:30:47,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593342621] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:30:47,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:30:47,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 41] total 46 [2024-09-25 11:30:47,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239134247] [2024-09-25 11:30:47,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:30:47,936 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-25 11:30:47,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:30:47,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-25 11:30:47,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2024-09-25 11:30:47,938 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 46 states, 44 states have (on average 2.022727272727273) internal successors, (89), 46 states have internal predecessors, (89), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-25 11:30:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:30:48,144 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2024-09-25 11:30:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 11:30:48,144 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 2.022727272727273) internal successors, (89), 46 states have internal predecessors, (89), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57) Word has length 121 [2024-09-25 11:30:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:30:48,145 INFO L225 Difference]: With dead ends: 76 [2024-09-25 11:30:48,145 INFO L226 Difference]: Without dead ends: 72 [2024-09-25 11:30:48,147 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 240 SyntacticMatches, 19 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1305, Invalid=2727, Unknown=0, NotChecked=0, Total=4032 [2024-09-25 11:30:48,147 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:30:48,147 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 210 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:30:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-25 11:30:48,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-25 11:30:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 21 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2024-09-25 11:30:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-25 11:30:48,153 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 121 [2024-09-25 11:30:48,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:30:48,154 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-25 11:30:48,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 2.022727272727273) internal successors, (89), 46 states have internal predecessors, (89), 23 states have call successors, (24), 1 states have call predecessors, (24), 21 states have return successors, (57), 20 states have call predecessors, (57), 23 states have call successors, (57) [2024-09-25 11:30:48,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:30:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-25 11:30:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-09-25 11:30:48,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:30:48,155 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:30:48,181 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-25 11:30:48,356 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:30:48,356 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:30:48,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:30:48,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1808618865, now seen corresponding path program 19 times [2024-09-25 11:30:48,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:30:48,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016370269] [2024-09-25 11:30:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:30:48,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:30:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:48,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:30:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:48,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:30:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:48,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:48,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:48,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:48,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:30:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-09-25 11:30:49,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:30:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016370269] [2024-09-25 11:30:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016370269] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:30:49,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207925981] [2024-09-25 11:30:49,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:30:49,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:30:49,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:30:49,625 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:30:49,627 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-25 11:30:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:30:51,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-25 11:30:51,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:30:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-09-25 11:30:51,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:31:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-25 11:31:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207925981] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:31:20,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:31:20,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 47 [2024-09-25 11:31:20,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450904044] [2024-09-25 11:31:20,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:31:20,512 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-25 11:31:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:31:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-25 11:31:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=1568, Unknown=0, NotChecked=0, Total=2162 [2024-09-25 11:31:20,515 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 47 states, 46 states have (on average 2.0) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59) [2024-09-25 11:31:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:31:20,756 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-09-25 11:31:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-25 11:31:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59) Word has length 127 [2024-09-25 11:31:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:31:20,758 INFO L225 Difference]: With dead ends: 79 [2024-09-25 11:31:20,758 INFO L226 Difference]: Without dead ends: 75 [2024-09-25 11:31:20,759 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 252 SyntacticMatches, 21 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1430, Invalid=2860, Unknown=0, NotChecked=0, Total=4290 [2024-09-25 11:31:20,759 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 245 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:31:20,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 219 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:31:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-25 11:31:20,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-09-25 11:31:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 22 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2024-09-25 11:31:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-09-25 11:31:20,765 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 127 [2024-09-25 11:31:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:31:20,766 INFO L474 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-09-25 11:31:20,766 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (24), 1 states have call predecessors, (24), 22 states have return successors, (59), 21 states have call predecessors, (59), 23 states have call successors, (59) [2024-09-25 11:31:20,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:31:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-09-25 11:31:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-25 11:31:20,767 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:31:20,767 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:31:20,788 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-25 11:31:20,968 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:31:20,968 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:31:20,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:31:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash 145386749, now seen corresponding path program 20 times [2024-09-25 11:31:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:31:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907160770] [2024-09-25 11:31:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:31:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:31:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:21,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:31:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:21,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:31:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:21,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:21,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:21,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:21,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:22,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-09-25 11:31:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:31:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907160770] [2024-09-25 11:31:23,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907160770] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:31:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407025922] [2024-09-25 11:31:23,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:31:23,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:31:23,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:31:23,497 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:31:23,498 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-25 11:31:25,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:31:25,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:31:25,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-09-25 11:31:25,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:31:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-09-25 11:31:25,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:31:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-09-25 11:31:26,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407025922] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:31:26,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:31:26,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 45 [2024-09-25 11:31:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707391462] [2024-09-25 11:31:26,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:31:26,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-25 11:31:26,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:31:26,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-25 11:31:26,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 11:31:26,674 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 24 states have internal predecessors, (49), 1 states have call successors, (4), 1 states have call predecessors, (4), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2024-09-25 11:31:27,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:31:27,156 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2024-09-25 11:31:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-25 11:31:27,157 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 24 states have internal predecessors, (49), 1 states have call successors, (4), 1 states have call predecessors, (4), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 133 [2024-09-25 11:31:27,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:31:27,158 INFO L225 Difference]: With dead ends: 82 [2024-09-25 11:31:27,158 INFO L226 Difference]: Without dead ends: 78 [2024-09-25 11:31:27,159 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 11:31:27,159 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 11:31:27,159 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1913 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 11:31:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-25 11:31:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-09-25 11:31:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 4 states have call successors, (4), 3 states have call predecessors, (4), 23 states have return successors, (24), 23 states have call predecessors, (24), 3 states have call successors, (24) [2024-09-25 11:31:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2024-09-25 11:31:27,166 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 133 [2024-09-25 11:31:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:31:27,167 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2024-09-25 11:31:27,167 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 24 states have internal predecessors, (49), 1 states have call successors, (4), 1 states have call predecessors, (4), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2024-09-25 11:31:27,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:31:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2024-09-25 11:31:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-09-25 11:31:27,168 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:31:27,168 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:31:27,196 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-25 11:31:27,369 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-25 11:31:27,369 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:31:27,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:31:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1314272433, now seen corresponding path program 21 times [2024-09-25 11:31:27,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:31:27,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877506283] [2024-09-25 11:31:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:31:27,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:31:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:27,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:31:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:27,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:31:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:27,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:27,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:28,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 11:31:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:31:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 630 proven. 63 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-09-25 11:31:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:31:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877506283] [2024-09-25 11:31:29,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877506283] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:31:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780383159] [2024-09-25 11:31:29,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:31:29,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:31:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:31:29,338 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:31:29,340 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-25 11:31:31,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-09-25 11:31:31,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:31:31,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-25 11:31:31,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:31:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 672 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-09-25 11:31:31,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 11:31:31,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780383159] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:31:31,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 11:31:31,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [27] total 29 [2024-09-25 11:31:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382178705] [2024-09-25 11:31:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:31:31,299 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 11:31:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:31:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 11:31:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2024-09-25 11:31:31,300 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 26 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 3 states have call successors, (4), 1 states have call predecessors, (4), 23 states have return successors, (23), 23 states have call predecessors, (23), 3 states have call successors, (23) [2024-09-25 11:31:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:31:31,616 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2024-09-25 11:31:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-25 11:31:31,617 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 3 states have call successors, (4), 1 states have call predecessors, (4), 23 states have return successors, (23), 23 states have call predecessors, (23), 3 states have call successors, (23) Word has length 139 [2024-09-25 11:31:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:31:31,617 INFO L225 Difference]: With dead ends: 78 [2024-09-25 11:31:31,617 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 11:31:31,618 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=815, Invalid=1635, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 11:31:31,621 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 2 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:31:31,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 227 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:31:31,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 11:31:31,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 11:31:31,621 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) [2024-09-25 11:31:31,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 11:31:31,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2024-09-25 11:31:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:31:31,622 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 11:31:31,622 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 3 states have call successors, (4), 1 states have call predecessors, (4), 23 states have return successors, (23), 23 states have call predecessors, (23), 3 states have call successors, (23) [2024-09-25 11:31:31,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:31:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 11:31:31,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 11:31:31,629 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 11:31:31,649 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-25 11:31:31,830 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:31:31,833 INFO L408 BasicCegarLoop]: Path program histogram: [21, 1] [2024-09-25 11:31:31,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 11:31:33,203 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 11:31:33,216 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:31:33,216 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:31:33,217 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:31:33,217 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:31:33,217 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:31:33,217 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:31:33,217 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:31:33,217 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:31:33,242 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:31:33,242 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #length [2024-09-25 11:31:33,242 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:31:33,242 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #StackHeapBarrier [2024-09-25 11:31:33,242 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:31:33,242 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#0 [2024-09-25 11:31:33,245 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:31:33,245 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #valid [2024-09-25 11:31:33,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:31:33 BoogieIcfgContainer [2024-09-25 11:31:33,247 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 11:31:33,247 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 11:31:33,247 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 11:31:33,248 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 11:31:33,248 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:28:15" (3/4) ... [2024-09-25 11:31:33,250 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 11:31:33,301 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 11:31:33,301 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 11:31:33,301 INFO L158 Benchmark]: Toolchain (without parser) took 198188.60ms. Allocated memory was 79.7MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 43.7MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 120.8MB. Max. memory is 16.1GB. [2024-09-25 11:31:33,302 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 37.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:31:33,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.15ms. Allocated memory is still 79.7MB. Free memory was 61.4MB in the beginning and 50.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 11:31:33,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.10ms. Allocated memory is still 79.7MB. Free memory was 50.5MB in the beginning and 49.6MB in the end (delta: 878.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 11:31:33,302 INFO L158 Benchmark]: Boogie Preprocessor took 41.56ms. Allocated memory is still 79.7MB. Free memory was 49.6MB in the beginning and 48.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 11:31:33,303 INFO L158 Benchmark]: RCFGBuilder took 340.58ms. Allocated memory is still 79.7MB. Free memory was 48.0MB in the beginning and 37.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 11:31:33,303 INFO L158 Benchmark]: TraceAbstraction took 197473.85ms. Allocated memory was 79.7MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 36.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 787.1MB. Max. memory is 16.1GB. [2024-09-25 11:31:33,303 INFO L158 Benchmark]: Witness Printer took 53.61ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-25 11:31:33,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 37.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.15ms. Allocated memory is still 79.7MB. Free memory was 61.4MB in the beginning and 50.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.10ms. Allocated memory is still 79.7MB. Free memory was 50.5MB in the beginning and 49.6MB in the end (delta: 878.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.56ms. Allocated memory is still 79.7MB. Free memory was 49.6MB in the beginning and 48.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.58ms. Allocated memory is still 79.7MB. Free memory was 48.0MB in the beginning and 37.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 197473.85ms. Allocated memory was 79.7MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 36.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 787.1MB. Max. memory is 16.1GB. * Witness Printer took 53.61ms. Allocated memory is still 1.3GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #length - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #StackHeapBarrier - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #valid * 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: 15]: 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: 196.0s, OverallIterations: 22, TraceHistogramMax: 22, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1926 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1675 mSDsluCounter, 4880 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4512 mSDsCounter, 657 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3193 IncrementalHoareTripleChecker+Invalid, 3850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 657 mSolverCounterUnsat, 368 mSDtfsCounter, 3193 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4259 GetRequests, 3234 SyntacticMatches, 210 SemanticMatches, 815 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13950 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=21, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 176.0s InterpolantComputationTime, 3331 NumberOfCodeBlocks, 3331 NumberOfCodeBlocksAsserted, 167 NumberOfCheckSat, 4788 ConstructedInterpolants, 0 QuantifiedInterpolants, 13448 SizeOfPredicates, 211 NumberOfNonLiveVariables, 4263 ConjunctsInSsa, 589 ConjunctsInUnsatCore, 63 InterpolantComputations, 2 PerfectInterpolantSequences, 13195/29148 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: 6]: Procedure Contract for id Derived contract for procedure id. Ensures: (((((((((((((((((((((((3 == \result) && (x == 3)) || ((19 == \result) && (19 == x))) || ((11 == \result) && (x == 11))) || ((x == 6) && (6 == \result))) || ((9 == \result) && (x == 9))) || ((x == 17) && (17 == \result))) || ((x == 18) && (18 == \result))) || ((2 == \result) && (x == 2))) || (20 < x)) || ((10 == \result) && (x == 10))) || ((5 == \result) && (5 == x))) || ((20 == \result) && (x == 20))) || ((8 == \result) && (x == 8))) || ((7 == \result) && (7 == x))) || ((12 == \result) && (x == 12))) || ((\result == 1) && (x == 1))) || ((14 == \result) && (x == 14))) || ((x == 4) && (4 == \result))) || ((x == 15) && (15 == \result))) || ((13 == \result) && (x == 13))) || ((x == 16) && (16 == \result))) || ((\result == 0) && (x == 0))) RESULT: Ultimate proved your program to be correct! [2024-09-25 11:31:33,381 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE