./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 --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fb1cb0b9 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/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 --traceabstraction.encode.modifies.clause.in.ensures.clause.of.contracts true --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-fb1cb0b-m [2024-09-25 11:23:28,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 11:23:28,986 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 11:23:28,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 11:23:28,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 11:23:29,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 11:23:29,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 11:23:29,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 11:23:29,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 11:23:29,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 11:23:29,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 11:23:29,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 11:23:29,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 11:23:29,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 11:23:29,027 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 11:23:29,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 11:23:29,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 11:23:29,028 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 11:23:29,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 11:23:29,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 11:23:29,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 11:23:29,034 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 11:23:29,034 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 11:23:29,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 11:23:29,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 11:23:29,035 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 11:23:29,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 11:23:29,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 11:23:29,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 11:23:29,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 11:23:29,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 11:23:29,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 11:23:29,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:23:29,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 11:23:29,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 11:23:29,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 11:23:29,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 11:23:29,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 11:23:29,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 11:23:29,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 11:23:29,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 11:23:29,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 11:23:29,042 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.plugins.generator.traceabstraction: Encode 'modifies' clause in 'ensures' clause of contracts -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 11:23:29,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 11:23:29,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 11:23:29,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 11:23:29,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 11:23:29,396 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 11:23:29,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Addition03-1.c [2024-09-25 11:23:30,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 11:23:31,014 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 11:23:31,015 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition03-1.c [2024-09-25 11:23:31,020 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0d815d588/10f6df2a419a4c0c927c2bc6ea22c08c/FLAG2bf3b31be [2024-09-25 11:23:31,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0d815d588/10f6df2a419a4c0c927c2bc6ea22c08c [2024-09-25 11:23:31,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 11:23:31,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 11:23:31,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 11:23:31,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 11:23:31,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 11:23:31,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4198995a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31, skipping insertion in model container [2024-09-25 11:23:31,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 11:23:31,188 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] [2024-09-25 11:23:31,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:23:31,209 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 11:23:31,223 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] [2024-09-25 11:23:31,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 11:23:31,240 INFO L204 MainTranslator]: Completed translation [2024-09-25 11:23:31,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31 WrapperNode [2024-09-25 11:23:31,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 11:23:31,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 11:23:31,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 11:23:31,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 11:23:31,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,273 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 11:23:31,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 11:23:31,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 11:23:31,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 11:23:31,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 11:23:31,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,283 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,293 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-25 11:23:31,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 11:23:31,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 11:23:31,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 11:23:31,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 11:23:31,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (1/1) ... [2024-09-25 11:23:31,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 11:23:31,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:31,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-25 11:23:31,336 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-25 11:23:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 11:23:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 11:23:31,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 11:23:31,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 11:23:31,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 11:23:31,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 11:23:31,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 11:23:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 11:23:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2024-09-25 11:23:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2024-09-25 11:23:31,453 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 11:23:31,455 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 11:23:31,589 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-25 11:23:31,589 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 11:23:31,620 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 11:23:31,621 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 11:23:31,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:23:31 BoogieIcfgContainer [2024-09-25 11:23:31,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 11:23:31,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 11:23:31,624 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 11:23:31,629 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 11:23:31,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:23:31" (1/3) ... [2024-09-25 11:23:31,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573c2d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:23:31, skipping insertion in model container [2024-09-25 11:23:31,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:23:31" (2/3) ... [2024-09-25 11:23:31,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573c2d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:23:31, skipping insertion in model container [2024-09-25 11:23:31,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:23:31" (3/3) ... [2024-09-25 11:23:31,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2024-09-25 11:23:31,650 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 11:23:31,650 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 11:23:31,697 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 11:23:31,709 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;@3397995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 11:23:31,709 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 11:23:31,713 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) [2024-09-25 11:23:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 11:23:31,720 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:31,721 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:31,722 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:31,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:31,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1490740627, now seen corresponding path program 1 times [2024-09-25 11:23:31,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:31,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236858476] [2024-09-25 11:23:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:31,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:31,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:31,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 11:23:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236858476] [2024-09-25 11:23:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236858476] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:23:32,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:23:32,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 11:23:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729896159] [2024-09-25 11:23:32,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:23:32,084 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 11:23:32,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 11:23:32,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:23:32,108 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) [2024-09-25 11:23:32,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:32,221 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-09-25 11:23:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 11:23:32,225 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 [2024-09-25 11:23:32,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:32,232 INFO L225 Difference]: With dead ends: 36 [2024-09-25 11:23:32,233 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 11:23:32,235 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 11:23:32,239 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-25 11:23:32,240 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] [2024-09-25 11:23:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 11:23:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-25 11:23:32,283 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) [2024-09-25 11:23:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-09-25 11:23:32,286 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2024-09-25 11:23:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:32,288 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-09-25 11:23:32,288 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) [2024-09-25 11:23:32,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-09-25 11:23:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-25 11:23:32,291 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:32,291 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:32,291 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 11:23:32,292 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:32,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:32,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2027321068, now seen corresponding path program 1 times [2024-09-25 11:23:32,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:32,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90538775] [2024-09-25 11:23:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:32,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 11:23:32,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:32,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90538775] [2024-09-25 11:23:32,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90538775] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 11:23:32,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 11:23:32,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-25 11:23:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859198253] [2024-09-25 11:23:32,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 11:23:32,435 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-25 11:23:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-25 11:23:32,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-25 11:23:32,438 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) [2024-09-25 11:23:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:32,476 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-09-25 11:23:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-25 11:23:32,477 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 [2024-09-25 11:23:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:32,478 INFO L225 Difference]: With dead ends: 32 [2024-09-25 11:23:32,478 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 11:23:32,479 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 [2024-09-25 11:23:32,480 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 [2024-09-25 11:23:32,481 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] [2024-09-25 11:23:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 11:23:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-09-25 11:23:32,495 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) [2024-09-25 11:23:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-09-25 11:23:32,496 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2024-09-25 11:23:32,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:32,497 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-09-25 11:23:32,497 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) [2024-09-25 11:23:32,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:32,499 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-09-25 11:23:32,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-25 11:23:32,500 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:32,500 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:32,501 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-25 11:23:32,501 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:32,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:32,502 INFO L85 PathProgramCache]: Analyzing trace with hash 596179159, now seen corresponding path program 1 times [2024-09-25 11:23:32,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:32,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501561409] [2024-09-25 11:23:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:32,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 11:23:32,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:32,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501561409] [2024-09-25 11:23:32,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501561409] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:23:32,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860647945] [2024-09-25 11:23:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:32,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:23:32,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:32,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:23:32,790 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 11:23:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:32,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 11:23:32,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:23:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 11:23:32,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:23:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 11:23:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860647945] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:23:33,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:23:33,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-09-25 11:23:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565900541] [2024-09-25 11:23:33,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:23:33,184 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-25 11:23:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-25 11:23:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-09-25 11:23:33,188 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) [2024-09-25 11:23:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:33,348 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2024-09-25 11:23:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 11:23:33,348 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 [2024-09-25 11:23:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:33,351 INFO L225 Difference]: With dead ends: 57 [2024-09-25 11:23:33,351 INFO L226 Difference]: Without dead ends: 37 [2024-09-25 11:23:33,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-09-25 11:23:33,352 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 [2024-09-25 11:23:33,353 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] [2024-09-25 11:23:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-25 11:23:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-09-25 11:23:33,369 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) [2024-09-25 11:23:33,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-25 11:23:33,370 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 20 [2024-09-25 11:23:33,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:33,370 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-25 11:23:33,371 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) [2024-09-25 11:23:33,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:33,371 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-25 11:23:33,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-25 11:23:33,373 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:33,374 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:33,387 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 11:23:33,574 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 [2024-09-25 11:23:33,575 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:33,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1205196513, now seen corresponding path program 2 times [2024-09-25 11:23:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:33,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323288055] [2024-09-25 11:23:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:33,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:33,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:33,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:33,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:33,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:33,817 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:23:33,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323288055] [2024-09-25 11:23:33,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323288055] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:23:33,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947188392] [2024-09-25 11:23:33,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:23:33,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:23:33,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:33,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:23:33,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 11:23:33,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:23:33,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:23:33,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 11:23:33,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:23:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-25 11:23:33,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:23:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 11:23:34,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947188392] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:23:34,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:23:34,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 17 [2024-09-25 11:23:34,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750686634] [2024-09-25 11:23:34,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:23:34,553 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-25 11:23:34,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-25 11:23:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-09-25 11:23:34,555 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) [2024-09-25 11:23:34,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:34,711 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2024-09-25 11:23:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 11:23:34,712 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 [2024-09-25 11:23:34,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:34,713 INFO L225 Difference]: With dead ends: 49 [2024-09-25 11:23:34,713 INFO L226 Difference]: Without dead ends: 43 [2024-09-25 11:23:34,713 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 [2024-09-25 11:23:34,714 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 [2024-09-25 11:23:34,714 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] [2024-09-25 11:23:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-25 11:23:34,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2024-09-25 11:23:34,723 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) [2024-09-25 11:23:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-25 11:23:34,724 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 34 [2024-09-25 11:23:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:34,724 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-25 11:23:34,724 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) [2024-09-25 11:23:34,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-25 11:23:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-25 11:23:34,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:34,726 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:34,742 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-25 11:23:34,930 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 [2024-09-25 11:23:34,931 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:34,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash -661240853, now seen corresponding path program 3 times [2024-09-25 11:23:34,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:34,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940018428] [2024-09-25 11:23:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:34,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 11:23:35,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:35,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940018428] [2024-09-25 11:23:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940018428] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:23:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566734265] [2024-09-25 11:23:35,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:23:35,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:23:35,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:35,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:23:35,350 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 11:23:35,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-25 11:23:35,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:23:35,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 11:23:35,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:23:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-09-25 11:23:35,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:23:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 11:23:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566734265] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:23:36,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:23:36,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 21 [2024-09-25 11:23:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750277279] [2024-09-25 11:23:36,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:23:36,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-25 11:23:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:36,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-25 11:23:36,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-09-25 11:23:36,700 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) [2024-09-25 11:23:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:36,879 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2024-09-25 11:23:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 11:23:36,879 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 [2024-09-25 11:23:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:36,881 INFO L225 Difference]: With dead ends: 55 [2024-09-25 11:23:36,882 INFO L226 Difference]: Without dead ends: 49 [2024-09-25 11:23:36,883 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 [2024-09-25 11:23:36,884 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 [2024-09-25 11:23:36,885 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] [2024-09-25 11:23:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-25 11:23:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-09-25 11:23:36,897 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) [2024-09-25 11:23:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-09-25 11:23:36,900 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 48 [2024-09-25 11:23:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:36,901 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-09-25 11:23:36,901 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) [2024-09-25 11:23:36,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-09-25 11:23:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-09-25 11:23:36,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:36,906 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:36,923 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 11:23:37,110 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 [2024-09-25 11:23:37,111 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:37,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash -135028747, now seen corresponding path program 4 times [2024-09-25 11:23:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:37,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105123335] [2024-09-25 11:23:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:37,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 11:23:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105123335] [2024-09-25 11:23:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105123335] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:23:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988299736] [2024-09-25 11:23:37,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:23:37,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:23:37,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:37,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:23:37,611 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 11:23:37,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:23:37,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:23:37,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 11:23:37,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:23:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-25 11:23:37,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:23:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 11:23:39,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988299736] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:23:39,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:23:39,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 25 [2024-09-25 11:23:39,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612521302] [2024-09-25 11:23:39,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:23:39,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-25 11:23:39,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:39,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-25 11:23:39,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-09-25 11:23:39,964 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) [2024-09-25 11:23:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:40,167 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2024-09-25 11:23:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 11:23:40,167 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 [2024-09-25 11:23:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:40,169 INFO L225 Difference]: With dead ends: 61 [2024-09-25 11:23:40,169 INFO L226 Difference]: Without dead ends: 55 [2024-09-25 11:23:40,170 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 11:23:40,170 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 [2024-09-25 11:23:40,171 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] [2024-09-25 11:23:40,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-25 11:23:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2024-09-25 11:23:40,179 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) [2024-09-25 11:23:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-09-25 11:23:40,181 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 62 [2024-09-25 11:23:40,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:40,182 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-09-25 11:23:40,182 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) [2024-09-25 11:23:40,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-09-25 11:23:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-25 11:23:40,186 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:40,186 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:40,203 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 11:23:40,386 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 [2024-09-25 11:23:40,386 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:40,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1309193473, now seen corresponding path program 5 times [2024-09-25 11:23:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844659788] [2024-09-25 11:23:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:40,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:41,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 11:23:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844659788] [2024-09-25 11:23:41,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844659788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:23:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338142839] [2024-09-25 11:23:41,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:23:41,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:23:41,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:41,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:23:41,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 11:23:41,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-25 11:23:41,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:23:41,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 11:23:41,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:23:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-09-25 11:23:41,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:23:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 11:23:44,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338142839] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:23:44,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:23:44,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 29 [2024-09-25 11:23:44,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558205142] [2024-09-25 11:23:44,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:23:44,713 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-25 11:23:44,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:44,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-25 11:23:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=591, Unknown=0, NotChecked=0, Total=812 [2024-09-25 11:23:44,714 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) [2024-09-25 11:23:44,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:44,945 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2024-09-25 11:23:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 11:23:44,946 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 [2024-09-25 11:23:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:44,950 INFO L225 Difference]: With dead ends: 67 [2024-09-25 11:23:44,950 INFO L226 Difference]: Without dead ends: 61 [2024-09-25 11:23:44,951 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 [2024-09-25 11:23:44,951 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 [2024-09-25 11:23:44,951 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] [2024-09-25 11:23:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-25 11:23:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-09-25 11:23:44,969 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) [2024-09-25 11:23:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-09-25 11:23:44,972 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 76 [2024-09-25 11:23:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:44,973 INFO L474 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-09-25 11:23:44,973 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) [2024-09-25 11:23:44,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-09-25 11:23:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-09-25 11:23:44,977 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:44,977 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:44,994 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 11:23:45,178 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 [2024-09-25 11:23:45,178 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:45,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:45,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1098210039, now seen corresponding path program 6 times [2024-09-25 11:23:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807702360] [2024-09-25 11:23:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:45,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:46,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-25 11:23:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807702360] [2024-09-25 11:23:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807702360] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:23:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917894060] [2024-09-25 11:23:46,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:23:46,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:23:46,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:46,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:23:46,063 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 11:23:46,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-25 11:23:46,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:23:46,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 11:23:46,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:23:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-09-25 11:23:46,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:23:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-25 11:23:51,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917894060] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:23:51,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:23:51,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 27] total 33 [2024-09-25 11:23:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853268122] [2024-09-25 11:23:51,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:23:51,959 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-25 11:23:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:23:51,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-25 11:23:51,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2024-09-25 11:23:51,961 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) [2024-09-25 11:23:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:23:52,168 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2024-09-25 11:23:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-25 11:23:52,169 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 [2024-09-25 11:23:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:23:52,170 INFO L225 Difference]: With dead ends: 73 [2024-09-25 11:23:52,170 INFO L226 Difference]: Without dead ends: 67 [2024-09-25 11:23:52,171 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 [2024-09-25 11:23:52,171 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 [2024-09-25 11:23:52,172 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] [2024-09-25 11:23:52,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-25 11:23:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2024-09-25 11:23:52,182 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) [2024-09-25 11:23:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2024-09-25 11:23:52,182 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 90 [2024-09-25 11:23:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:23:52,183 INFO L474 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2024-09-25 11:23:52,183 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) [2024-09-25 11:23:52,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2024-09-25 11:23:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-09-25 11:23:52,184 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:23:52,185 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:23:52,199 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-25 11:23:52,389 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 [2024-09-25 11:23:52,390 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:23:52,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:23:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1131875859, now seen corresponding path program 7 times [2024-09-25 11:23:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:23:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595203329] [2024-09-25 11:23:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:23:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:23:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:52,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:23:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:52,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:23:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:52,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:52,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:52,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:23:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-09-25 11:23:53,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:23:53,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595203329] [2024-09-25 11:23:53,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595203329] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:23:53,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883625078] [2024-09-25 11:23:53,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:23:53,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:23:53,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:23:53,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:23:53,541 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 11:23:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:23:53,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 11:23:53,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:23:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2024-09-25 11:23:53,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:24:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 11:24:03,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883625078] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:24:03,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:24:03,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 37 [2024-09-25 11:24:03,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989217577] [2024-09-25 11:24:03,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:24:03,249 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-25 11:24:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:24:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-25 11:24:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=975, Unknown=0, NotChecked=0, Total=1332 [2024-09-25 11:24:03,251 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) [2024-09-25 11:24:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:24:03,499 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2024-09-25 11:24:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-25 11:24:03,500 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 [2024-09-25 11:24:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:24:03,501 INFO L225 Difference]: With dead ends: 79 [2024-09-25 11:24:03,501 INFO L226 Difference]: Without dead ends: 73 [2024-09-25 11:24:03,502 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 [2024-09-25 11:24:03,502 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 [2024-09-25 11:24:03,503 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] [2024-09-25 11:24:03,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-25 11:24:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-09-25 11:24:03,512 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) [2024-09-25 11:24:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2024-09-25 11:24:03,513 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 104 [2024-09-25 11:24:03,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:24:03,513 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2024-09-25 11:24:03,513 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) [2024-09-25 11:24:03,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:24:03,514 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2024-09-25 11:24:03,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-09-25 11:24:03,515 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:24:03,515 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:24:03,530 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 11:24:03,719 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 [2024-09-25 11:24:03,720 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:24:03,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:24:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1771706851, now seen corresponding path program 8 times [2024-09-25 11:24:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:24:03,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185772994] [2024-09-25 11:24:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:24:03,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:24:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:03,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:24:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:03,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:24:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:04,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:05,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:05,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:05,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:05,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-09-25 11:24:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:24:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185772994] [2024-09-25 11:24:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185772994] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:24:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366703152] [2024-09-25 11:24:05,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 11:24:05,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:24:05,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:24:05,160 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:24:05,161 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 11:24:05,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 11:24:05,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:24:05,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-25 11:24:05,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:24:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-09-25 11:24:05,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:24:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-09-25 11:24:19,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366703152] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:24:19,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:24:19,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 41 [2024-09-25 11:24:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206139711] [2024-09-25 11:24:19,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:24:19,842 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-25 11:24:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:24:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-25 11:24:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1203, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 11:24:19,844 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) [2024-09-25 11:24:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:24:20,122 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-09-25 11:24:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-25 11:24:20,123 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 [2024-09-25 11:24:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:24:20,124 INFO L225 Difference]: With dead ends: 85 [2024-09-25 11:24:20,124 INFO L226 Difference]: Without dead ends: 79 [2024-09-25 11:24:20,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 234 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=2223, Unknown=0, NotChecked=0, Total=3306 [2024-09-25 11:24:20,126 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 [2024-09-25 11:24:20,126 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] [2024-09-25 11:24:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-25 11:24:20,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-09-25 11:24:20,142 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) [2024-09-25 11:24:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-09-25 11:24:20,143 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 118 [2024-09-25 11:24:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:24:20,143 INFO L474 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-09-25 11:24:20,143 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) [2024-09-25 11:24:20,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:24:20,144 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-09-25 11:24:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-25 11:24:20,149 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:24:20,149 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:24:20,168 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 11:24:20,349 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 [2024-09-25 11:24:20,350 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:24:20,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:24:20,350 INFO L85 PathProgramCache]: Analyzing trace with hash -18838233, now seen corresponding path program 9 times [2024-09-25 11:24:20,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:24:20,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982511643] [2024-09-25 11:24:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:24:20,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:24:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:20,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:24:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:20,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:24:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:20,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:20,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:21,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:22,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:22,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:22,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:22,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-09-25 11:24:22,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:24:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982511643] [2024-09-25 11:24:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982511643] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:24:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391900894] [2024-09-25 11:24:22,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 11:24:22,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:24:22,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:24:22,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:24:22,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 11:24:22,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-25 11:24:22,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:24:22,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-25 11:24:22,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:24:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-09-25 11:24:22,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:24:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-09-25 11:24:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391900894] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:24:43,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:24:43,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 39] total 45 [2024-09-25 11:24:43,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294346221] [2024-09-25 11:24:43,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:24:43,662 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-25 11:24:43,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:24:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-25 11:24:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1455, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 11:24:43,664 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) [2024-09-25 11:24:43,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:24:43,994 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-09-25 11:24:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-25 11:24:43,994 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 [2024-09-25 11:24:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:24:43,997 INFO L225 Difference]: With dead ends: 91 [2024-09-25 11:24:43,997 INFO L226 Difference]: Without dead ends: 85 [2024-09-25 11:24:43,998 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 [2024-09-25 11:24:43,999 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 11:24:44,000 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 214 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 11:24:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-09-25 11:24:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-09-25 11:24:44,016 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) [2024-09-25 11:24:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-09-25 11:24:44,017 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 132 [2024-09-25 11:24:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:24:44,018 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-09-25 11:24:44,019 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) [2024-09-25 11:24:44,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:24:44,019 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-09-25 11:24:44,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-25 11:24:44,022 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:24:44,023 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:24:44,040 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-25 11:24:44,226 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 [2024-09-25 11:24:44,227 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:24:44,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:24:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2018534193, now seen corresponding path program 10 times [2024-09-25 11:24:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:24:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332269702] [2024-09-25 11:24:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:24:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:24:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:44,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:24:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:44,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:24:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:44,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:44,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:45,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:24:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:24:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-09-25 11:24:46,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:24:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332269702] [2024-09-25 11:24:46,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332269702] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:24:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155629183] [2024-09-25 11:24:46,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 11:24:46,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:24:46,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:24:46,374 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:24:46,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 11:24:47,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 11:24:47,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:24:47,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-25 11:24:47,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:24:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-09-25 11:24:47,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:25:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-25 11:25:16,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155629183] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:25:16,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:25:16,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 49 [2024-09-25 11:25:16,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741047408] [2024-09-25 11:25:16,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:25:16,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-25 11:25:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:25:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-25 11:25:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=1731, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 11:25:16,647 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) [2024-09-25 11:25:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:25:16,985 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-09-25 11:25:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-25 11:25:16,985 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 [2024-09-25 11:25:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:25:16,987 INFO L225 Difference]: With dead ends: 97 [2024-09-25 11:25:16,987 INFO L226 Difference]: Without dead ends: 91 [2024-09-25 11:25:16,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 290 SyntacticMatches, 19 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1587, Invalid=3243, Unknown=0, NotChecked=0, Total=4830 [2024-09-25 11:25:16,989 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 [2024-09-25 11:25:16,989 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] [2024-09-25 11:25:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-25 11:25:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-09-25 11:25:17,004 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) [2024-09-25 11:25:17,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-09-25 11:25:17,005 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 146 [2024-09-25 11:25:17,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:25:17,005 INFO L474 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-09-25 11:25:17,006 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) [2024-09-25 11:25:17,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:25:17,006 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-09-25 11:25:17,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-25 11:25:17,008 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:25:17,009 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:25:17,026 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 11:25:17,209 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 [2024-09-25 11:25:17,210 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:25:17,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:25:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1946077243, now seen corresponding path program 11 times [2024-09-25 11:25:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:25:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906615493] [2024-09-25 11:25:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:25:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:25:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:17,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:25:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:17,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:25:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:17,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:17,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:18,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:18,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:18,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:18,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:18,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:18,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:25:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:25:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-09-25 11:25:19,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:25:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906615493] [2024-09-25 11:25:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906615493] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:25:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154995508] [2024-09-25 11:25:19,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 11:25:19,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:25:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:25:19,787 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:25:19,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 11:25:20,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-25 11:25:20,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:25:20,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-25 11:25:20,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:25:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-09-25 11:25:21,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:26:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-25 11:26:02,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154995508] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:26:02,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:26:02,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 47] total 53 [2024-09-25 11:26:02,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473303453] [2024-09-25 11:26:02,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:26:02,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-25 11:26:02,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:26:02,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-25 11:26:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2024-09-25 11:26:02,022 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) [2024-09-25 11:26:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:26:02,338 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-09-25 11:26:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-25 11:26:02,339 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 [2024-09-25 11:26:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:26:02,340 INFO L225 Difference]: With dead ends: 103 [2024-09-25 11:26:02,340 INFO L226 Difference]: Without dead ends: 97 [2024-09-25 11:26:02,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 318 SyntacticMatches, 21 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2431 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1875, Invalid=3825, Unknown=0, NotChecked=0, Total=5700 [2024-09-25 11:26:02,342 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 [2024-09-25 11:26:02,342 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] [2024-09-25 11:26:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-25 11:26:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-09-25 11:26:02,354 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) [2024-09-25 11:26:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-09-25 11:26:02,355 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 160 [2024-09-25 11:26:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:26:02,356 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-09-25 11:26:02,356 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) [2024-09-25 11:26:02,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:26:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-09-25 11:26:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-09-25 11:26:02,358 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:26:02,358 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:26:02,377 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-25 11:26:02,558 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 [2024-09-25 11:26:02,558 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:26:02,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:26:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1693115323, now seen corresponding path program 12 times [2024-09-25 11:26:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:26:02,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828081457] [2024-09-25 11:26:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:26:02,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:26:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:02,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:26:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:02,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:26:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:03,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:03,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:03,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:03,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:03,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:04,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:26:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:26:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2024-09-25 11:26:05,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:26:05,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828081457] [2024-09-25 11:26:05,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828081457] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:26:05,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723820314] [2024-09-25 11:26:05,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 11:26:05,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:26:05,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:26:05,276 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:26:05,277 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 11:26:06,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2024-09-25 11:26:06,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 11:26:06,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-25 11:26:06,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:26:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-09-25 11:26:06,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 11:27:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-09-25 11:27:02,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723820314] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 11:27:02,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 11:27:02,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 51] total 57 [2024-09-25 11:27:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208522713] [2024-09-25 11:27:02,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 11:27:02,612 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-25 11:27:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 11:27:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-25 11:27:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2355, Unknown=0, NotChecked=0, Total=3192 [2024-09-25 11:27:02,615 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) [2024-09-25 11:27:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 11:27:03,044 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2024-09-25 11:27:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-25 11:27:03,044 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 [2024-09-25 11:27:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 11:27:03,046 INFO L225 Difference]: With dead ends: 109 [2024-09-25 11:27:03,046 INFO L226 Difference]: Without dead ends: 103 [2024-09-25 11:27:03,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 346 SyntacticMatches, 23 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2868 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2187, Invalid=4455, Unknown=0, NotChecked=0, Total=6642 [2024-09-25 11:27:03,048 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 488 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-25 11:27:03,048 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] [2024-09-25 11:27:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-25 11:27:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-09-25 11:27:03,059 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) [2024-09-25 11:27:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2024-09-25 11:27:03,060 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 174 [2024-09-25 11:27:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 11:27:03,061 INFO L474 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2024-09-25 11:27:03,061 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) [2024-09-25 11:27:03,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2024-09-25 11:27:03,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-25 11:27:03,063 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 11:27:03,063 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 11:27:03,084 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-25 11:27:03,264 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 [2024-09-25 11:27:03,264 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 11:27:03,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 11:27:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1868775601, now seen corresponding path program 13 times [2024-09-25 11:27:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 11:27:03,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776414023] [2024-09-25 11:27:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 11:27:03,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 11:27:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:03,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 11:27:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:03,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 11:27:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:03,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:04,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:04,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:04,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:04,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:04,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:04,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:05,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 11:27:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-09-25 11:27:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 11:27:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776414023] [2024-09-25 11:27:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776414023] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 11:27:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095411103] [2024-09-25 11:27:06,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 11:27:06,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 11:27:06,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 11:27:06,117 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 11:27:06,118 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 11:27:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 11:27:08,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-25 11:27:08,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 11:27:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-09-25 11:27:08,235 INFO L327 TraceCheckSpWp]: Computing backward predicates...