./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition03-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Addition03-1.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 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-27b4987-m [2024-09-21 12:24:55,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 12:24:55,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 12:24:55,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 12:24:55,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 12:24:55,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 12:24:55,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 12:24:55,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 12:24:55,511 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 12:24:55,511 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 12:24:55,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 12:24:55,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 12:24:55,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 12:24:55,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 12:24:55,513 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 12:24:55,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 12:24:55,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 12:24:55,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 12:24:55,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 12:24:55,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 12:24:55,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 12:24:55,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 12:24:55,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 12:24:55,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 12:24:55,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 12:24:55,521 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 12:24:55,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 12:24:55,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 12:24:55,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 12:24:55,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 12:24:55,522 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 12:24:55,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 12:24:55,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:24:55,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 12:24:55,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 12:24:55,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 12:24:55,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 12:24:55,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 12:24:55,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 12:24:55,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 12:24:55,526 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 12:24:55,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 12:24:55,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 12:24:55,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 12:24:55,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 12:24:55,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 12:24:55,779 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 12:24:55,779 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 12:24:55,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Addition03-1.c [2024-09-21 12:24:57,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 12:24:57,409 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 12:24:57,409 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c [2024-09-21 12:24:57,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4a6c7701a/f39e66cfa67f4f2fa735cb4a587c87c9/FLAG31a37fc02 [2024-09-21 12:24:57,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4a6c7701a/f39e66cfa67f4f2fa735cb4a587c87c9 [2024-09-21 12:24:57,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 12:24:57,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 12:24:57,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 12:24:57,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 12:24:57,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 12:24:57,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:57" (1/1) ... [2024-09-21 12:24:57,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a3e457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:57, skipping insertion in model container [2024-09-21 12:24:57,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:24:57" (1/1) ... [2024-09-21 12:24:57,832 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 12:24:57,956 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/Addition03-1.c[840,853] [2024-09-21 12:24:57,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:24:57,967 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 12:24:57,983 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/Addition03-1.c[840,853] [2024-09-21 12:24:57,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:24:57,999 INFO L204 MainTranslator]: Completed translation [2024-09-21 12:24:58,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58 WrapperNode [2024-09-21 12:24:58,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 12:24:58,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 12:24:58,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 12:24:58,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 12:24:58,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,021 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 12:24:58,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 12:24:58,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 12:24:58,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 12:24:58,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 12:24:58,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,046 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]. [2024-09-21 12:24:58,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 12:24:58,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 12:24:58,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 12:24:58,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 12:24:58,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (1/1) ... [2024-09-21 12:24:58,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:24:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:24:58,090 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) [2024-09-21 12:24:58,093 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 [2024-09-21 12:24:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 12:24:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 12:24:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 12:24:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 12:24:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 12:24:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 12:24:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 12:24:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 12:24:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2024-09-21 12:24:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2024-09-21 12:24:58,187 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 12:24:58,189 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 12:24:58,303 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-21 12:24:58,303 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 12:24:58,321 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 12:24:58,322 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-21 12:24:58,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:58 BoogieIcfgContainer [2024-09-21 12:24:58,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 12:24:58,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 12:24:58,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 12:24:58,333 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 12:24:58,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:24:57" (1/3) ... [2024-09-21 12:24:58,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe922ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:58, skipping insertion in model container [2024-09-21 12:24:58,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:24:58" (2/3) ... [2024-09-21 12:24:58,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe922ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:24:58, skipping insertion in model container [2024-09-21 12:24:58,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:24:58" (3/3) ... [2024-09-21 12:24:58,336 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2024-09-21 12:24:58,353 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 12:24:58,353 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 12:24:58,427 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 12:24:58,439 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;@7911eb01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 12:24:58,439 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 12:24:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 12:24:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-21 12:24:58,452 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:24:58,453 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:24:58,454 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:24:58,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:24:58,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1490740627, now seen corresponding path program 1 times [2024-09-21 12:24:58,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:24:58,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400264694] [2024-09-21 12:24:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:24:58,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:24:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:58,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:24:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:58,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:24:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:24:58,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:24:58,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400264694] [2024-09-21 12:24:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400264694] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:24:58,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:24:58,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:24:58,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66418613] [2024-09-21 12:24:58,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:24:58,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:24:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:24:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:24:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:24:58,741 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-21 12:24:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:24:58,824 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-21 12:24:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:24:58,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-09-21 12:24:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:24:58,834 INFO L225 Difference]: With dead ends: 36 [2024-09-21 12:24:58,834 INFO L226 Difference]: Without dead ends: 24 [2024-09-21 12:24:58,837 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 [2024-09-21 12:24:58,839 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:24:58,840 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 58 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:24:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-21 12:24:58,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-21 12:24:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-21 12:24:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-09-21 12:24:58,877 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2024-09-21 12:24:58,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:24:58,877 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-09-21 12:24:58,878 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-21 12:24:58,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:24:58,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-09-21 12:24:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-21 12:24:58,880 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:24:58,880 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:24:58,880 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 12:24:58,880 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:24:58,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:24:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2027321068, now seen corresponding path program 1 times [2024-09-21 12:24:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:24:58,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933258175] [2024-09-21 12:24:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:24:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:24:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:58,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:24:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:58,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:24:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:24:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:24:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933258175] [2024-09-21 12:24:58,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933258175] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:24:58,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:24:58,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-21 12:24:58,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208782974] [2024-09-21 12:24:58,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:24:58,992 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-21 12:24:58,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:24:58,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-21 12:24:58,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-21 12:24:58,993 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-21 12:24:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:24:59,023 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-09-21 12:24:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-21 12:24:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-21 12:24:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:24:59,024 INFO L225 Difference]: With dead ends: 32 [2024-09-21 12:24:59,024 INFO L226 Difference]: Without dead ends: 24 [2024-09-21 12:24:59,025 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-21 12:24:59,026 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:24:59,026 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 54 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:24:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-21 12:24:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-21 12:24:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-21 12:24:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-09-21 12:24:59,034 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2024-09-21 12:24:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:24:59,035 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-09-21 12:24:59,035 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-21 12:24:59,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:24:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-09-21 12:24:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-21 12:24:59,049 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:24:59,049 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:24:59,049 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 12:24:59,049 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:24:59,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:24:59,051 INFO L85 PathProgramCache]: Analyzing trace with hash 596179159, now seen corresponding path program 1 times [2024-09-21 12:24:59,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:24:59,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023825879] [2024-09-21 12:24:59,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:24:59,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:24:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:59,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:24:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:59,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:24:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:59,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:24:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:24:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:24:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023825879] [2024-09-21 12:24:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023825879] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:24:59,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005236039] [2024-09-21 12:24:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:24:59,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:24:59,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:24:59,233 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) [2024-09-21 12:24:59,238 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 12:24:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:24:59,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-21 12:24:59,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:24:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-21 12:24:59,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:24:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:24:59,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005236039] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:24:59,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:24:59,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-09-21 12:24:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148736714] [2024-09-21 12:24:59,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:24:59,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 12:24:59,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:24:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 12:24:59,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-21 12:24:59,547 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-21 12:24:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:24:59,698 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2024-09-21 12:24:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 12:24:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 20 [2024-09-21 12:24:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:24:59,701 INFO L225 Difference]: With dead ends: 57 [2024-09-21 12:24:59,702 INFO L226 Difference]: Without dead ends: 37 [2024-09-21 12:24:59,703 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-09-21 12:24:59,704 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:24:59,706 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 69 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:24:59,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-21 12:24:59,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-09-21 12:24:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-21 12:24:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-21 12:24:59,721 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 20 [2024-09-21 12:24:59,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:24:59,721 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-21 12:24:59,722 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-21 12:24:59,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:24:59,722 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-21 12:24:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-21 12:24:59,723 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:24:59,723 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:24:59,743 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-21 12:24:59,924 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:24:59,924 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:24:59,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:24:59,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1205196513, now seen corresponding path program 2 times [2024-09-21 12:24:59,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:24:59,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537595852] [2024-09-21 12:24:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:24:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:24:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:00,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:00,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:00,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:00,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:00,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-21 12:25:00,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537595852] [2024-09-21 12:25:00,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537595852] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8828523] [2024-09-21 12:25:00,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:25:00,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:00,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:00,180 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) [2024-09-21 12:25:00,182 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 12:25:00,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:25:00,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:00,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 12:25:00,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-21 12:25:00,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:00,790 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:25:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8828523] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:00,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 17 [2024-09-21 12:25:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210449958] [2024-09-21 12:25:00,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:00,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 12:25:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 12:25:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-21 12:25:00,792 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-21 12:25:00,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:00,935 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-09-21 12:25:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 12:25:00,936 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 34 [2024-09-21 12:25:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:00,937 INFO L225 Difference]: With dead ends: 49 [2024-09-21 12:25:00,937 INFO L226 Difference]: Without dead ends: 43 [2024-09-21 12:25:00,938 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2024-09-21 12:25:00,939 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:00,939 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 107 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-21 12:25:00,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-21 12:25:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (11), 8 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-21 12:25:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-21 12:25:00,952 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 34 [2024-09-21 12:25:00,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:00,953 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-21 12:25:00,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-21 12:25:00,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-21 12:25:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-21 12:25:00,960 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:00,960 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:00,982 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 12:25:01,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:01,161 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:01,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -661240853, now seen corresponding path program 3 times [2024-09-21 12:25:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310616202] [2024-09-21 12:25:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 12:25:01,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310616202] [2024-09-21 12:25:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310616202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829757070] [2024-09-21 12:25:01,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:25:01,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:01,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:01,531 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) [2024-09-21 12:25:01,536 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 12:25:01,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-21 12:25:01,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:01,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-21 12:25:01,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-21 12:25:01,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-21 12:25:02,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829757070] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:02,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:02,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 21 [2024-09-21 12:25:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435937618] [2024-09-21 12:25:02,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:02,706 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-21 12:25:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-21 12:25:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-09-21 12:25:02,707 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2024-09-21 12:25:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:02,875 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-09-21 12:25:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-21 12:25:02,876 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) Word has length 48 [2024-09-21 12:25:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:02,877 INFO L225 Difference]: With dead ends: 55 [2024-09-21 12:25:02,877 INFO L226 Difference]: Without dead ends: 49 [2024-09-21 12:25:02,877 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=513, Unknown=0, NotChecked=0, Total=756 [2024-09-21 12:25:02,878 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:02,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 123 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:02,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-21 12:25:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-21 12:25:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 9 states have return successors, (13), 10 states have call predecessors, (13), 5 states have call successors, (13) [2024-09-21 12:25:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-21 12:25:02,891 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 48 [2024-09-21 12:25:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:02,891 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-21 12:25:02,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 8 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2024-09-21 12:25:02,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:02,892 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-21 12:25:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-21 12:25:02,893 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:02,893 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:02,912 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-21 12:25:03,094 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:03,095 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:03,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:03,095 INFO L85 PathProgramCache]: Analyzing trace with hash -135028747, now seen corresponding path program 4 times [2024-09-21 12:25:03,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259668455] [2024-09-21 12:25:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:03,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-21 12:25:03,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:03,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259668455] [2024-09-21 12:25:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259668455] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876935603] [2024-09-21 12:25:03,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:25:03,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:03,542 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) [2024-09-21 12:25:03,544 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 12:25:03,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:25:03,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:03,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-21 12:25:03,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-21 12:25:03,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 12:25:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876935603] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:05,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 25 [2024-09-21 12:25:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110643511] [2024-09-21 12:25:05,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:05,525 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-21 12:25:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-21 12:25:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-09-21 12:25:05,526 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-21 12:25:05,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:05,684 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2024-09-21 12:25:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-21 12:25:05,685 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) Word has length 62 [2024-09-21 12:25:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:05,686 INFO L225 Difference]: With dead ends: 61 [2024-09-21 12:25:05,686 INFO L226 Difference]: Without dead ends: 55 [2024-09-21 12:25:05,687 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2024-09-21 12:25:05,690 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:05,692 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 116 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-21 12:25:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-09-21 12:25:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 6 states have call successors, (6), 5 states have call predecessors, (6), 11 states have return successors, (15), 12 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-21 12:25:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-09-21 12:25:05,704 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 62 [2024-09-21 12:25:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:05,706 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-09-21 12:25:05,706 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 10 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (24), 11 states have call predecessors, (24), 10 states have call successors, (24) [2024-09-21 12:25:05,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-09-21 12:25:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-21 12:25:05,708 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:05,708 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:05,727 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-21 12:25:05,911 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:05,912 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:05,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1309193473, now seen corresponding path program 5 times [2024-09-21 12:25:05,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:05,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144600314] [2024-09-21 12:25:05,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:05,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:05,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-21 12:25:06,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144600314] [2024-09-21 12:25:06,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144600314] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952147817] [2024-09-21 12:25:06,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:25:06,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:06,422 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) [2024-09-21 12:25:06,423 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 12:25:06,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-21 12:25:06,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:06,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-21 12:25:06,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-21 12:25:06,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 12:25:09,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952147817] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:09,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:09,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 29 [2024-09-21 12:25:09,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054121069] [2024-09-21 12:25:09,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:09,616 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-21 12:25:09,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-21 12:25:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2024-09-21 12:25:09,617 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2024-09-21 12:25:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:09,817 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-21 12:25:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-21 12:25:09,818 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) Word has length 76 [2024-09-21 12:25:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:09,819 INFO L225 Difference]: With dead ends: 67 [2024-09-21 12:25:09,819 INFO L226 Difference]: Without dead ends: 61 [2024-09-21 12:25:09,820 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 150 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=507, Invalid=1053, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 12:25:09,820 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 158 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:09,820 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 143 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-21 12:25:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-09-21 12:25:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 13 states have return successors, (17), 14 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-21 12:25:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-09-21 12:25:09,827 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 76 [2024-09-21 12:25:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:09,828 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-09-21 12:25:09,828 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 12 states have call successors, (14), 1 states have call predecessors, (14), 13 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2024-09-21 12:25:09,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-09-21 12:25:09,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-21 12:25:09,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:09,830 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:09,842 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 12:25:10,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-21 12:25:10,031 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:10,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:10,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1098210039, now seen corresponding path program 6 times [2024-09-21 12:25:10,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:10,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816515370] [2024-09-21 12:25:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:10,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-21 12:25:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816515370] [2024-09-21 12:25:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816515370] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272362327] [2024-09-21 12:25:10,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:25:10,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:10,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:10,773 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) [2024-09-21 12:25:10,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 12:25:10,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-21 12:25:10,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:10,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-21 12:25:10,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-09-21 12:25:10,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-21 12:25:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272362327] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:16,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 33 [2024-09-21 12:25:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43578766] [2024-09-21 12:25:16,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:16,076 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-21 12:25:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:16,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-21 12:25:16,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2024-09-21 12:25:16,077 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2024-09-21 12:25:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:16,287 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-09-21 12:25:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-21 12:25:16,288 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) Word has length 90 [2024-09-21 12:25:16,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:16,289 INFO L225 Difference]: With dead ends: 73 [2024-09-21 12:25:16,289 INFO L226 Difference]: Without dead ends: 67 [2024-09-21 12:25:16,290 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 178 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=675, Invalid=1395, Unknown=0, NotChecked=0, Total=2070 [2024-09-21 12:25:16,290 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 69 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:16,290 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 167 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-21 12:25:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-21 12:25:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 6 states have call successors, (6), 5 states have call predecessors, (6), 15 states have return successors, (19), 16 states have call predecessors, (19), 5 states have call successors, (19) [2024-09-21 12:25:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2024-09-21 12:25:16,303 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 90 [2024-09-21 12:25:16,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:16,303 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2024-09-21 12:25:16,304 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.3333333333333335) internal successors, (77), 33 states have internal predecessors, (77), 14 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (36), 15 states have call predecessors, (36), 14 states have call successors, (36) [2024-09-21 12:25:16,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2024-09-21 12:25:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-21 12:25:16,305 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:16,305 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:16,324 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 12:25:16,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:16,506 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:16,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1131875859, now seen corresponding path program 7 times [2024-09-21 12:25:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:16,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892454875] [2024-09-21 12:25:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:16,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:16,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:16,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:16,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:16,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-21 12:25:17,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:17,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892454875] [2024-09-21 12:25:17,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892454875] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:17,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509574287] [2024-09-21 12:25:17,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:25:17,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:17,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:17,577 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) [2024-09-21 12:25:17,588 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 12:25:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:17,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-21 12:25:17,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-09-21 12:25:17,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-21 12:25:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509574287] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:26,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 37 [2024-09-21 12:25:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187609238] [2024-09-21 12:25:26,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:26,183 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-21 12:25:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-21 12:25:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2024-09-21 12:25:26,184 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) [2024-09-21 12:25:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:26,424 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-09-21 12:25:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-21 12:25:26,425 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) Word has length 104 [2024-09-21 12:25:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:26,426 INFO L225 Difference]: With dead ends: 79 [2024-09-21 12:25:26,427 INFO L226 Difference]: Without dead ends: 73 [2024-09-21 12:25:26,428 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 206 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=867, Invalid=1785, Unknown=0, NotChecked=0, Total=2652 [2024-09-21 12:25:26,428 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 165 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:26,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 186 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-21 12:25:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-21 12:25:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 17 states have return successors, (21), 18 states have call predecessors, (21), 5 states have call successors, (21) [2024-09-21 12:25:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2024-09-21 12:25:26,435 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 104 [2024-09-21 12:25:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:26,436 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2024-09-21 12:25:26,436 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3513513513513513) internal successors, (87), 37 states have internal predecessors, (87), 16 states have call successors, (18), 1 states have call predecessors, (18), 17 states have return successors, (42), 17 states have call predecessors, (42), 16 states have call successors, (42) [2024-09-21 12:25:26,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2024-09-21 12:25:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-21 12:25:26,441 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:26,441 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:26,464 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-21 12:25:26,642 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:26,643 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:26,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1771706851, now seen corresponding path program 8 times [2024-09-21 12:25:26,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:26,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716215735] [2024-09-21 12:25:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:26,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:26,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:26,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:27,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:28,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:28,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:28,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:28,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:28,147 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-21 12:25:28,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716215735] [2024-09-21 12:25:28,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716215735] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:28,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100844542] [2024-09-21 12:25:28,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:25:28,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:28,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:28,150 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) [2024-09-21 12:25:28,154 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 12:25:28,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:25:28,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:28,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-21 12:25:28,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-09-21 12:25:28,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:25:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-21 12:25:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100844542] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:25:41,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:25:41,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 41 [2024-09-21 12:25:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743661925] [2024-09-21 12:25:41,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:25:41,068 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-21 12:25:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:25:41,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-21 12:25:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1203, Unknown=0, NotChecked=0, Total=1640 [2024-09-21 12:25:41,069 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) [2024-09-21 12:25:41,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:25:41,318 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-09-21 12:25:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-21 12:25:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) Word has length 118 [2024-09-21 12:25:41,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:25:41,319 INFO L225 Difference]: With dead ends: 85 [2024-09-21 12:25:41,319 INFO L226 Difference]: Without dead ends: 79 [2024-09-21 12:25:41,320 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 234 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1083, Invalid=2223, Unknown=0, NotChecked=0, Total=3306 [2024-09-21 12:25:41,321 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:25:41,321 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 209 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:25:41,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-21 12:25:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-09-21 12:25:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 6 states have call successors, (6), 5 states have call predecessors, (6), 19 states have return successors, (23), 20 states have call predecessors, (23), 5 states have call successors, (23) [2024-09-21 12:25:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-09-21 12:25:41,331 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 118 [2024-09-21 12:25:41,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:25:41,331 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-09-21 12:25:41,331 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 18 states have call successors, (20), 1 states have call predecessors, (20), 19 states have return successors, (48), 19 states have call predecessors, (48), 18 states have call successors, (48) [2024-09-21 12:25:41,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:41,332 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-09-21 12:25:41,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-21 12:25:41,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:25:41,333 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:25:41,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-21 12:25:41,535 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:41,536 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:25:41,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:25:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -18838233, now seen corresponding path program 9 times [2024-09-21 12:25:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:25:41,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719434165] [2024-09-21 12:25:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:25:41,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:25:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:41,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:25:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:41,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:25:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:41,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:41,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:25:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:25:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-09-21 12:25:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:25:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719434165] [2024-09-21 12:25:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719434165] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:25:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590011945] [2024-09-21 12:25:42,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:25:42,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:25:42,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:25:42,914 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) [2024-09-21 12:25:42,915 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 12:25:43,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-21 12:25:43,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:25:43,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-21 12:25:43,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:25:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-09-21 12:25:43,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-21 12:26:01,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590011945] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:01,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:01,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 45 [2024-09-21 12:26:01,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038237629] [2024-09-21 12:26:01,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:01,925 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-21 12:26:01,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:01,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-21 12:26:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1455, Unknown=0, NotChecked=0, Total=1980 [2024-09-21 12:26:01,929 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) [2024-09-21 12:26:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:26:02,272 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-09-21 12:26:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-21 12:26:02,272 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) Word has length 132 [2024-09-21 12:26:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:26:02,274 INFO L225 Difference]: With dead ends: 91 [2024-09-21 12:26:02,274 INFO L226 Difference]: Without dead ends: 85 [2024-09-21 12:26:02,275 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 262 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1323, Invalid=2709, Unknown=0, NotChecked=0, Total=4032 [2024-09-21 12:26:02,275 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:26:02,275 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 214 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 12:26:02,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-21 12:26:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-21 12:26:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 6 states have call successors, (6), 5 states have call predecessors, (6), 21 states have return successors, (25), 22 states have call predecessors, (25), 5 states have call successors, (25) [2024-09-21 12:26:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-09-21 12:26:02,283 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 132 [2024-09-21 12:26:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:26:02,284 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-09-21 12:26:02,284 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 20 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (54), 21 states have call predecessors, (54), 20 states have call successors, (54) [2024-09-21 12:26:02,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-09-21 12:26:02,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-21 12:26:02,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:26:02,285 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:26:02,300 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-21 12:26:02,489 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-21 12:26:02,490 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:26:02,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:02,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2018534193, now seen corresponding path program 10 times [2024-09-21 12:26:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:26:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144175108] [2024-09-21 12:26:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:26:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:26:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:02,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:26:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:02,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:26:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:02,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:03,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-21 12:26:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:26:04,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144175108] [2024-09-21 12:26:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144175108] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:26:04,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344484122] [2024-09-21 12:26:04,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:26:04,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:26:04,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:26:04,207 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) [2024-09-21 12:26:04,208 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 12:26:04,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:26:04,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:26:04,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-21 12:26:04,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-09-21 12:26:04,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:26:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-21 12:26:30,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344484122] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:26:30,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:26:30,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 49 [2024-09-21 12:26:30,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137612765] [2024-09-21 12:26:30,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:26:30,919 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-21 12:26:30,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:26:30,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-21 12:26:30,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=1731, Unknown=0, NotChecked=0, Total=2352 [2024-09-21 12:26:30,921 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) [2024-09-21 12:26:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:26:31,283 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-09-21 12:26:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-21 12:26:31,284 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) Word has length 146 [2024-09-21 12:26:31,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:26:31,285 INFO L225 Difference]: With dead ends: 97 [2024-09-21 12:26:31,285 INFO L226 Difference]: Without dead ends: 91 [2024-09-21 12:26:31,286 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 290 SyntacticMatches, 19 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1587, Invalid=3243, Unknown=0, NotChecked=0, Total=4830 [2024-09-21 12:26:31,286 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 455 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:26:31,286 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 238 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 12:26:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-21 12:26:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-21 12:26:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 6 states have call successors, (6), 5 states have call predecessors, (6), 23 states have return successors, (27), 24 states have call predecessors, (27), 5 states have call successors, (27) [2024-09-21 12:26:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-09-21 12:26:31,299 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 146 [2024-09-21 12:26:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:26:31,299 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-09-21 12:26:31,299 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 22 states have call successors, (24), 1 states have call predecessors, (24), 23 states have return successors, (60), 23 states have call predecessors, (60), 22 states have call successors, (60) [2024-09-21 12:26:31,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-09-21 12:26:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-21 12:26:31,301 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:26:31,301 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:26:31,318 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-21 12:26:31,501 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-21 12:26:31,502 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:26:31,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:26:31,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1946077243, now seen corresponding path program 11 times [2024-09-21 12:26:31,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:26:31,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807951450] [2024-09-21 12:26:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:26:31,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:26:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:31,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:26:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:31,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:26:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:31,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:32,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:26:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:26:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-21 12:26:33,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:26:33,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807951450] [2024-09-21 12:26:33,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807951450] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:26:33,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18297485] [2024-09-21 12:26:33,441 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:26:33,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:26:33,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:26:33,443 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) [2024-09-21 12:26:33,444 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 12:26:34,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-21 12:26:34,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:26:34,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-21 12:26:34,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:26:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-09-21 12:26:34,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:27:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-21 12:27:10,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18297485] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:27:10,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:27:10,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 53 [2024-09-21 12:27:10,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797325540] [2024-09-21 12:27:10,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:27:10,752 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-21 12:27:10,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:27:10,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-21 12:27:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2024-09-21 12:27:10,754 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) [2024-09-21 12:27:11,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:27:11,051 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-09-21 12:27:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-21 12:27:11,051 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) Word has length 160 [2024-09-21 12:27:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:27:11,052 INFO L225 Difference]: With dead ends: 103 [2024-09-21 12:27:11,052 INFO L226 Difference]: Without dead ends: 97 [2024-09-21 12:27:11,054 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 318 SyntacticMatches, 21 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1875, Invalid=3825, Unknown=0, NotChecked=0, Total=5700 [2024-09-21 12:27:11,054 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 123 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:27:11,054 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 255 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:27:11,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-21 12:27:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-09-21 12:27:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 25 states have return successors, (29), 26 states have call predecessors, (29), 5 states have call successors, (29) [2024-09-21 12:27:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-09-21 12:27:11,062 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 160 [2024-09-21 12:27:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:27:11,062 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-09-21 12:27:11,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3962264150943398) internal successors, (127), 53 states have internal predecessors, (127), 24 states have call successors, (26), 1 states have call predecessors, (26), 25 states have return successors, (66), 25 states have call predecessors, (66), 24 states have call successors, (66) [2024-09-21 12:27:11,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-09-21 12:27:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-21 12:27:11,067 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:27:11,067 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:27:11,085 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-21 12:27:11,267 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:27:11,267 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:27:11,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:27:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1693115323, now seen corresponding path program 12 times [2024-09-21 12:27:11,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:27:11,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220570322] [2024-09-21 12:27:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:27:11,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:27:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:11,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:27:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:11,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:27:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:11,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:11,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:12,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:27:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:27:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-09-21 12:27:13,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:27:13,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220570322] [2024-09-21 12:27:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220570322] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:27:13,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96912074] [2024-09-21 12:27:13,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:27:13,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:27:13,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:27:13,633 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) [2024-09-21 12:27:13,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-21 12:27:14,928 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-09-21 12:27:14,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:27:14,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-21 12:27:14,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:27:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-09-21 12:27:15,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:28:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-21 12:28:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96912074] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:28:03,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:28:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 57 [2024-09-21 12:28:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752295282] [2024-09-21 12:28:03,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:28:03,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-21 12:28:03,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:28:03,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-21 12:28:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2355, Unknown=0, NotChecked=0, Total=3192 [2024-09-21 12:28:03,586 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) [2024-09-21 12:28:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:28:03,989 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-09-21 12:28:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-21 12:28:03,990 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) Word has length 174 [2024-09-21 12:28:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:28:03,991 INFO L225 Difference]: With dead ends: 109 [2024-09-21 12:28:03,991 INFO L226 Difference]: Without dead ends: 103 [2024-09-21 12:28:03,993 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 346 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2868 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2187, Invalid=4455, Unknown=0, NotChecked=0, Total=6642 [2024-09-21 12:28:03,993 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 488 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 12:28:03,993 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 266 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 12:28:03,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-21 12:28:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-09-21 12:28:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 6 states have call successors, (6), 5 states have call predecessors, (6), 27 states have return successors, (31), 28 states have call predecessors, (31), 5 states have call successors, (31) [2024-09-21 12:28:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-09-21 12:28:04,011 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 174 [2024-09-21 12:28:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:28:04,011 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-09-21 12:28:04,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 26 states have call successors, (28), 1 states have call predecessors, (28), 27 states have return successors, (72), 27 states have call predecessors, (72), 26 states have call successors, (72) [2024-09-21 12:28:04,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-09-21 12:28:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-21 12:28:04,013 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:28:04,013 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:28:04,041 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-21 12:28:04,213 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-21 12:28:04,214 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:28:04,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:28:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1868775601, now seen corresponding path program 13 times [2024-09-21 12:28:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:28:04,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629711205] [2024-09-21 12:28:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:28:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:28:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:04,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:28:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:04,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:28:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:04,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:04,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:05,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:06,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-21 12:28:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-09-21 12:28:07,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:28:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629711205] [2024-09-21 12:28:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629711205] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:28:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956123956] [2024-09-21 12:28:07,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:28:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:28:07,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:28:07,132 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) [2024-09-21 12:28:07,133 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-21 12:28:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:28:08,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-21 12:28:08,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:28:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-09-21 12:28:09,015 INFO L327 TraceCheckSpWp]: Computing backward predicates...