./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_15x0-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-27b4987-m [2024-09-21 12:29:50,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 12:29:50,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 12:29:50,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 12:29:50,138 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 12:29:50,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 12:29:50,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 12:29:50,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 12:29:50,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 12:29:50,160 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 12:29:50,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 12:29:50,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 12:29:50,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 12:29:50,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 12:29:50,164 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 12:29:50,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 12:29:50,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 12:29:50,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 12:29:50,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 12:29:50,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 12:29:50,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 12:29:50,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 12:29:50,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 12:29:50,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 12:29:50,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 12:29:50,169 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 12:29:50,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 12:29:50,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 12:29:50,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 12:29:50,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 12:29:50,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 12:29:50,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 12:29:50,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:29:50,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 12:29:50,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 12:29:50,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 12:29:50,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 12:29:50,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 12:29:50,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 12:29:50,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 12:29:50,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 12:29:50,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 12:29:50,173 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 12:29:50,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 12:29:50,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 12:29:50,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 12:29:50,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 12:29:50,395 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 12:29:50,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-21 12:29:51,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 12:29:51,905 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 12:29:51,905 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-21 12:29:51,911 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8c58e887a/439d8081020d4206adf7d42edb667dcf/FLAGfbd764e52 [2024-09-21 12:29:51,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8c58e887a/439d8081020d4206adf7d42edb667dcf [2024-09-21 12:29:51,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 12:29:51,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 12:29:51,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 12:29:51,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 12:29:51,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 12:29:51,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:29:51" (1/1) ... [2024-09-21 12:29:51,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5811af97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:51, skipping insertion in model container [2024-09-21 12:29:51,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:29:51" (1/1) ... [2024-09-21 12:29:51,945 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 12:29:52,052 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-21 12:29:52,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:29:52,067 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 12:29:52,077 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-21 12:29:52,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 12:29:52,102 INFO L204 MainTranslator]: Completed translation [2024-09-21 12:29:52,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52 WrapperNode [2024-09-21 12:29:52,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 12:29:52,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 12:29:52,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 12:29:52,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 12:29:52,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,131 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 12:29:52,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 12:29:52,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 12:29:52,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 12:29:52,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 12:29:52,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,165 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-21 12:29:52,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 12:29:52,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 12:29:52,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 12:29:52,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 12:29:52,172 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (1/1) ... [2024-09-21 12:29:52,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 12:29:52,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:29:52,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-21 12:29:52,206 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-21 12:29:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 12:29:52,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 12:29:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 12:29:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 12:29:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 12:29:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-21 12:29:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-21 12:29:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 12:29:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 12:29:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 12:29:52,300 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 12:29:52,303 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 12:29:52,381 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-21 12:29:52,381 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 12:29:52,399 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 12:29:52,399 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-21 12:29:52,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:29:52 BoogieIcfgContainer [2024-09-21 12:29:52,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 12:29:52,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 12:29:52,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 12:29:52,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 12:29:52,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:29:51" (1/3) ... [2024-09-21 12:29:52,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b43ef8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:29:52, skipping insertion in model container [2024-09-21 12:29:52,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:29:52" (2/3) ... [2024-09-21 12:29:52,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b43ef8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:29:52, skipping insertion in model container [2024-09-21 12:29:52,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:29:52" (3/3) ... [2024-09-21 12:29:52,407 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2024-09-21 12:29:52,420 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 12:29:52,421 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 12:29:52,460 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 12:29:52,469 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;@99cba33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 12:29:52,469 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 12:29:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-21 12:29:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-21 12:29:52,482 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:52,482 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:29:52,483 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:52,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-21 12:29:52,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099260299] [2024-09-21 12:29:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:52,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:52,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:52,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:29:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 12:29:52,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:29:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099260299] [2024-09-21 12:29:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099260299] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:29:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 12:29:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 12:29:52,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803683632] [2024-09-21 12:29:52,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:29:52,802 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 12:29:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:29:52,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 12:29:52,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:29:52,834 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 12:29:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:29:52,893 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-21 12:29:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 12:29:52,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-21 12:29:52,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:29:52,901 INFO L225 Difference]: With dead ends: 30 [2024-09-21 12:29:52,902 INFO L226 Difference]: Without dead ends: 18 [2024-09-21 12:29:52,904 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 12:29:52,908 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:29:52,909 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:29:52,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-21 12:29:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-21 12:29:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-21 12:29:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-21 12:29:52,936 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-21 12:29:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:29:52,937 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-21 12:29:52,937 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 12:29:52,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-21 12:29:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-21 12:29:52,939 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:52,939 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:29:52,940 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 12:29:52,940 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:52,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-21 12:29:52,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:52,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221613046] [2024-09-21 12:29:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:52,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:53,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:53,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:29:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:53,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-21 12:29:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:29:53,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221613046] [2024-09-21 12:29:53,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221613046] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:29:53,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569738214] [2024-09-21 12:29:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:53,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:53,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:29:53,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:29:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 12:29:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:53,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-21 12:29:53,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:29:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-21 12:29:53,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:29:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 12:29:53,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569738214] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:29:53,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:29:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-21 12:29:53,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534203929] [2024-09-21 12:29:53,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:29:53,520 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-21 12:29:53,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:29:53,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-21 12:29:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-21 12:29:53,521 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-21 12:29:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:29:53,609 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-21 12:29:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 12:29:53,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-21 12:29:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:29:53,614 INFO L225 Difference]: With dead ends: 25 [2024-09-21 12:29:53,614 INFO L226 Difference]: Without dead ends: 21 [2024-09-21 12:29:53,615 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-21 12:29:53,616 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:29:53,617 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:29:53,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-21 12:29:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-21 12:29:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-21 12:29:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-21 12:29:53,632 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-21 12:29:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:29:53,632 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-21 12:29:53,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-21 12:29:53,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-21 12:29:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-21 12:29:53,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:53,634 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:29:53,649 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 12:29:53,834 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:53,835 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:53,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-21 12:29:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:53,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993909351] [2024-09-21 12:29:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:53,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:53,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:29:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 12:29:54,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:29:54,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993909351] [2024-09-21 12:29:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993909351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:29:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949732048] [2024-09-21 12:29:54,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:29:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:54,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:29:54,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:29:54,147 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 12:29:54,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:29:54,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:29:54,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-21 12:29:54,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:29:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-21 12:29:54,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:29:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-21 12:29:54,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949732048] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:29:54,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:29:54,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-21 12:29:54,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467045] [2024-09-21 12:29:54,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:29:54,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-21 12:29:54,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:29:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-21 12:29:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-21 12:29:54,548 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-21 12:29:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:29:54,605 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-21 12:29:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 12:29:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-21 12:29:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:29:54,606 INFO L225 Difference]: With dead ends: 28 [2024-09-21 12:29:54,607 INFO L226 Difference]: Without dead ends: 24 [2024-09-21 12:29:54,607 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-21 12:29:54,608 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:29:54,609 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:29:54,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-21 12:29:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-21 12:29:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-21 12:29:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-21 12:29:54,617 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-21 12:29:54,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:29:54,617 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-21 12:29:54,617 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-21 12:29:54,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:54,618 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-21 12:29:54,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-21 12:29:54,619 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:54,619 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:29:54,631 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 12:29:54,819 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:54,820 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:54,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-21 12:29:54,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:54,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485066803] [2024-09-21 12:29:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:54,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:29:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:54,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-21 12:29:55,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:29:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485066803] [2024-09-21 12:29:55,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485066803] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:29:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560325462] [2024-09-21 12:29:55,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:29:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:29:55,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:29:55,021 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 12:29:55,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-21 12:29:55,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:29:55,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 12:29:55,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:29:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-21 12:29:55,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:29:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-21 12:29:55,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560325462] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:29:55,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:29:55,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-21 12:29:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318856871] [2024-09-21 12:29:55,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:29:55,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-21 12:29:55,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:29:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-21 12:29:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-21 12:29:55,529 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-21 12:29:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:29:55,594 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-21 12:29:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 12:29:55,595 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-21 12:29:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:29:55,596 INFO L225 Difference]: With dead ends: 31 [2024-09-21 12:29:55,596 INFO L226 Difference]: Without dead ends: 27 [2024-09-21 12:29:55,596 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-09-21 12:29:55,597 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:29:55,598 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:29:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-21 12:29:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-21 12:29:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-21 12:29:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-21 12:29:55,603 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-21 12:29:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:29:55,604 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-21 12:29:55,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-21 12:29:55,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-21 12:29:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-21 12:29:55,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:55,605 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:29:55,623 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-21 12:29:55,809 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:55,810 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:55,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-21 12:29:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:55,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280352753] [2024-09-21 12:29:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:55,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:55,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:55,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:29:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:55,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:56,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:56,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:56,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-21 12:29:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:29:56,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280352753] [2024-09-21 12:29:56,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280352753] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:29:56,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430907539] [2024-09-21 12:29:56,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:29:56,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:29:56,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:29:56,070 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 12:29:56,114 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:29:56,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:29:56,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 12:29:56,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:29:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-21 12:29:56,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:29:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-21 12:29:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430907539] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:29:56,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:29:56,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-21 12:29:56,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657722956] [2024-09-21 12:29:56,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:29:56,824 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 12:29:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:29:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 12:29:56,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-21 12:29:56,825 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-21 12:29:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:29:56,877 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-21 12:29:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 12:29:56,878 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-21 12:29:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:29:56,878 INFO L225 Difference]: With dead ends: 34 [2024-09-21 12:29:56,878 INFO L226 Difference]: Without dead ends: 30 [2024-09-21 12:29:56,879 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-21 12:29:56,879 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:29:56,880 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:29:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-21 12:29:56,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-21 12:29:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-21 12:29:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-21 12:29:56,889 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-21 12:29:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:29:56,889 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-21 12:29:56,890 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-21 12:29:56,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:56,890 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-21 12:29:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-21 12:29:56,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:56,892 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:29:56,906 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-21 12:29:57,093 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:57,093 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:57,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-21 12:29:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:57,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399272526] [2024-09-21 12:29:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:29:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 12:29:57,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:29:57,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399272526] [2024-09-21 12:29:57,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399272526] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:29:57,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981677628] [2024-09-21 12:29:57,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:29:57,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:57,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:29:57,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:29:57,360 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 12:29:57,405 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-21 12:29:57,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:29:57,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-21 12:29:57,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:29:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 12:29:57,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:29:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-21 12:29:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981677628] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:29:58,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:29:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-21 12:29:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617634619] [2024-09-21 12:29:58,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:29:58,470 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-21 12:29:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:29:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-21 12:29:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-21 12:29:58,471 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-21 12:29:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:29:58,545 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-21 12:29:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-21 12:29:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-21 12:29:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:29:58,547 INFO L225 Difference]: With dead ends: 37 [2024-09-21 12:29:58,547 INFO L226 Difference]: Without dead ends: 33 [2024-09-21 12:29:58,547 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-21 12:29:58,547 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:29:58,548 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:29:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-21 12:29:58,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-21 12:29:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-21 12:29:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-21 12:29:58,552 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-21 12:29:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:29:58,552 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-21 12:29:58,552 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-21 12:29:58,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-21 12:29:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-21 12:29:58,553 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:29:58,553 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:29:58,566 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 12:29:58,757 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-21 12:29:58,758 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:29:58,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:29:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-21 12:29:58,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:29:58,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733965808] [2024-09-21 12:29:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:29:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:29:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:29:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:29:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:58,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:29:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:29:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-21 12:29:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:29:59,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733965808] [2024-09-21 12:29:59,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733965808] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:29:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372402149] [2024-09-21 12:29:59,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:29:59,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:29:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:29:59,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:29:59,012 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 12:29:59,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-21 12:29:59,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:29:59,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-21 12:29:59,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:29:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-21 12:29:59,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-21 12:30:00,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372402149] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:00,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:00,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-21 12:30:00,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119544601] [2024-09-21 12:30:00,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:00,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-21 12:30:00,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-21 12:30:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-21 12:30:00,420 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-21 12:30:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:00,507 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-21 12:30:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 12:30:00,508 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-21 12:30:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:00,509 INFO L225 Difference]: With dead ends: 40 [2024-09-21 12:30:00,509 INFO L226 Difference]: Without dead ends: 36 [2024-09-21 12:30:00,509 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-09-21 12:30:00,510 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:00,510 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:30:00,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-21 12:30:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-21 12:30:00,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-21 12:30:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-21 12:30:00,515 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-21 12:30:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:00,515 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-21 12:30:00,516 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-21 12:30:00,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-21 12:30:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-21 12:30:00,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:00,517 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:00,535 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 12:30:00,717 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:00,718 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:00,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-21 12:30:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:00,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262349399] [2024-09-21 12:30:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:00,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:00,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:00,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:00,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:00,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:01,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:01,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:01,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:01,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-21 12:30:01,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262349399] [2024-09-21 12:30:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262349399] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316268047] [2024-09-21 12:30:01,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:30:01,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:01,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:01,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:01,097 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 12:30:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:01,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-21 12:30:01,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-21 12:30:01,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 12:30:02,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316268047] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:02,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:02,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-21 12:30:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141847224] [2024-09-21 12:30:02,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:02,750 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 12:30:02,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 12:30:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-21 12:30:02,751 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-21 12:30:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:02,845 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-21 12:30:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-21 12:30:02,846 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-21 12:30:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:02,849 INFO L225 Difference]: With dead ends: 43 [2024-09-21 12:30:02,849 INFO L226 Difference]: Without dead ends: 39 [2024-09-21 12:30:02,850 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-09-21 12:30:02,850 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:02,850 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-21 12:30:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-21 12:30:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-21 12:30:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-21 12:30:02,861 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-21 12:30:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:02,861 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-21 12:30:02,861 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-21 12:30:02,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-21 12:30:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-21 12:30:02,866 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:02,867 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:02,879 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-21 12:30:03,067 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:03,067 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:03,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:03,067 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-21 12:30:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:03,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496922341] [2024-09-21 12:30:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:03,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-21 12:30:03,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496922341] [2024-09-21 12:30:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496922341] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011463774] [2024-09-21 12:30:03,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:30:03,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:03,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:03,437 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:03,439 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 12:30:03,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:30:03,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:30:03,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-21 12:30:03,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-21 12:30:03,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-21 12:30:05,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011463774] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:05,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:05,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-21 12:30:05,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006320165] [2024-09-21 12:30:05,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:05,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-21 12:30:05,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:05,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-21 12:30:05,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-21 12:30:05,982 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-21 12:30:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:06,123 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-21 12:30:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 12:30:06,124 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-21 12:30:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:06,125 INFO L225 Difference]: With dead ends: 46 [2024-09-21 12:30:06,125 INFO L226 Difference]: Without dead ends: 42 [2024-09-21 12:30:06,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-21 12:30:06,125 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:06,126 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-21 12:30:06,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-21 12:30:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-21 12:30:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-21 12:30:06,135 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-21 12:30:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:06,136 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-21 12:30:06,136 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-21 12:30:06,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-21 12:30:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-21 12:30:06,137 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:06,139 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:06,165 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-21 12:30:06,339 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:06,340 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:06,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-21 12:30:06,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:06,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109066304] [2024-09-21 12:30:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:06,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-21 12:30:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109066304] [2024-09-21 12:30:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109066304] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808806770] [2024-09-21 12:30:06,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:30:06,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:06,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:06,745 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 12:30:06,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-21 12:30:06,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:30:06,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-21 12:30:06,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-21 12:30:06,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-21 12:30:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808806770] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:10,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:10,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-09-21 12:30:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440505488] [2024-09-21 12:30:10,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:10,084 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-21 12:30:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-21 12:30:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-09-21 12:30:10,085 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-21 12:30:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:10,198 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-21 12:30:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-21 12:30:10,199 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67 [2024-09-21 12:30:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:10,199 INFO L225 Difference]: With dead ends: 49 [2024-09-21 12:30:10,199 INFO L226 Difference]: Without dead ends: 45 [2024-09-21 12:30:10,200 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-09-21 12:30:10,200 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:10,200 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-21 12:30:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-21 12:30:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-21 12:30:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-21 12:30:10,205 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-21 12:30:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:10,205 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-21 12:30:10,205 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-21 12:30:10,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-21 12:30:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-21 12:30:10,209 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:10,209 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:10,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-21 12:30:10,412 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-21 12:30:10,413 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:10,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:10,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-21 12:30:10,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:10,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966193121] [2024-09-21 12:30:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:10,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-21 12:30:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966193121] [2024-09-21 12:30:10,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966193121] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93706195] [2024-09-21 12:30:10,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 12:30:10,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:10,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:10,851 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:10,855 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 12:30:11,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 12:30:11,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:30:11,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-21 12:30:11,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-21 12:30:11,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-21 12:30:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93706195] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:14,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:14,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-09-21 12:30:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030317984] [2024-09-21 12:30:14,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:14,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-21 12:30:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:14,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-21 12:30:14,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-09-21 12:30:14,735 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-21 12:30:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:14,856 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-21 12:30:14,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-21 12:30:14,856 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73 [2024-09-21 12:30:14,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:14,857 INFO L225 Difference]: With dead ends: 52 [2024-09-21 12:30:14,857 INFO L226 Difference]: Without dead ends: 48 [2024-09-21 12:30:14,858 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 146 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-09-21 12:30:14,858 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:14,859 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-21 12:30:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-21 12:30:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-21 12:30:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-21 12:30:14,866 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2024-09-21 12:30:14,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:14,867 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-21 12:30:14,867 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-21 12:30:14,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:14,867 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-21 12:30:14,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-21 12:30:14,868 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:14,868 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:14,896 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-21 12:30:15,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-21 12:30:15,072 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:15,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash 218071268, now seen corresponding path program 11 times [2024-09-21 12:30:15,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:15,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550292473] [2024-09-21 12:30:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:15,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-21 12:30:15,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550292473] [2024-09-21 12:30:15,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550292473] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:15,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923217063] [2024-09-21 12:30:15,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 12:30:15,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:15,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:15,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:15,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 12:30:15,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-21 12:30:15,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:30:15,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-21 12:30:15,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-21 12:30:15,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-21 12:30:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923217063] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:21,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:21,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-09-21 12:30:21,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774054647] [2024-09-21 12:30:21,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:21,142 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-21 12:30:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:21,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-21 12:30:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-09-21 12:30:21,143 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-21 12:30:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:21,273 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-21 12:30:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 12:30:21,274 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79 [2024-09-21 12:30:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:21,274 INFO L225 Difference]: With dead ends: 55 [2024-09-21 12:30:21,274 INFO L226 Difference]: Without dead ends: 51 [2024-09-21 12:30:21,275 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-09-21 12:30:21,275 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:21,276 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:21,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-21 12:30:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-21 12:30:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-21 12:30:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-21 12:30:21,284 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2024-09-21 12:30:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:21,285 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-21 12:30:21,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-21 12:30:21,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-21 12:30:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-21 12:30:21,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:21,286 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:21,300 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-21 12:30:21,490 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:21,490 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:21,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -313649636, now seen corresponding path program 12 times [2024-09-21 12:30:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346206839] [2024-09-21 12:30:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:21,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:22,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:22,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:22,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:22,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-21 12:30:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346206839] [2024-09-21 12:30:22,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346206839] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:22,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111829317] [2024-09-21 12:30:22,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 12:30:22,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:22,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:22,138 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:22,139 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-21 12:30:22,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-21 12:30:22,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:30:22,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-21 12:30:22,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-21 12:30:22,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-21 12:30:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111829317] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:28,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-09-21 12:30:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246568196] [2024-09-21 12:30:28,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:28,533 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-21 12:30:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:28,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-21 12:30:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-09-21 12:30:28,534 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-21 12:30:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:28,683 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-09-21 12:30:28,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-21 12:30:28,684 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85 [2024-09-21 12:30:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:28,685 INFO L225 Difference]: With dead ends: 58 [2024-09-21 12:30:28,685 INFO L226 Difference]: Without dead ends: 54 [2024-09-21 12:30:28,685 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-09-21 12:30:28,686 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:28,686 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-21 12:30:28,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-21 12:30:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-21 12:30:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-09-21 12:30:28,692 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2024-09-21 12:30:28,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:28,692 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-09-21 12:30:28,693 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-21 12:30:28,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-09-21 12:30:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-21 12:30:28,693 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:28,693 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:28,707 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-21 12:30:28,894 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-21 12:30:28,894 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:28,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1407532516, now seen corresponding path program 13 times [2024-09-21 12:30:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655330642] [2024-09-21 12:30:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:28,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:28,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-21 12:30:29,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:29,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655330642] [2024-09-21 12:30:29,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655330642] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:29,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590306115] [2024-09-21 12:30:29,595 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 12:30:29,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:29,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:29,599 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:29,601 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-21 12:30:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:29,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-21 12:30:29,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-21 12:30:30,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-21 12:30:38,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590306115] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:38,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:38,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-09-21 12:30:38,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315172762] [2024-09-21 12:30:38,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:38,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-21 12:30:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:38,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-21 12:30:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-09-21 12:30:38,146 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-21 12:30:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:38,286 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-09-21 12:30:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-21 12:30:38,286 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91 [2024-09-21 12:30:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:38,287 INFO L225 Difference]: With dead ends: 61 [2024-09-21 12:30:38,287 INFO L226 Difference]: Without dead ends: 57 [2024-09-21 12:30:38,288 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-09-21 12:30:38,288 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:38,289 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:38,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-21 12:30:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-21 12:30:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-09-21 12:30:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-21 12:30:38,293 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2024-09-21 12:30:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:38,293 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-21 12:30:38,293 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-21 12:30:38,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-21 12:30:38,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-21 12:30:38,294 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:38,294 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:38,310 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-21 12:30:38,498 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-21 12:30:38,499 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:38,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:38,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1575356700, now seen corresponding path program 14 times [2024-09-21 12:30:38,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:38,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526198622] [2024-09-21 12:30:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:38,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:38,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-21 12:30:39,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:39,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526198622] [2024-09-21 12:30:39,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526198622] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:39,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351816117] [2024-09-21 12:30:39,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 12:30:39,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:39,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:39,247 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:39,248 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-21 12:30:39,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 12:30:39,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:30:39,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-21 12:30:39,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-21 12:30:39,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 12:30:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-21 12:30:50,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351816117] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 12:30:50,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 12:30:50,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 35 [2024-09-21 12:30:50,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504514895] [2024-09-21 12:30:50,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 12:30:50,134 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-21 12:30:50,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-21 12:30:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2024-09-21 12:30:50,136 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-21 12:30:50,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:50,322 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-09-21 12:30:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-21 12:30:50,322 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) Word has length 97 [2024-09-21 12:30:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:50,323 INFO L225 Difference]: With dead ends: 64 [2024-09-21 12:30:50,323 INFO L226 Difference]: Without dead ends: 60 [2024-09-21 12:30:50,324 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=785, Invalid=1567, Unknown=0, NotChecked=0, Total=2352 [2024-09-21 12:30:50,324 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 179 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:50,324 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 148 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 12:30:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-21 12:30:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-21 12:30:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-09-21 12:30:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-21 12:30:50,331 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2024-09-21 12:30:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:50,332 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-21 12:30:50,332 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-21 12:30:50,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-21 12:30:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-21 12:30:50,333 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 12:30:50,333 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 12:30:50,351 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-21 12:30:50,533 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-21 12:30:50,534 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 12:30:50,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:50,534 INFO L85 PathProgramCache]: Analyzing trace with hash 12270308, now seen corresponding path program 15 times [2024-09-21 12:30:50,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 12:30:50,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174707904] [2024-09-21 12:30:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 12:30:50,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 12:30:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:50,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 12:30:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:50,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-21 12:30:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:51,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:51,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:51,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:51,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-21 12:30:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 12:30:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-09-21 12:30:52,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 12:30:52,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174707904] [2024-09-21 12:30:52,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174707904] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 12:30:52,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787647328] [2024-09-21 12:30:52,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 12:30:52,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 12:30:52,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 12:30:52,775 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 12:30:52,776 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-21 12:30:53,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-21 12:30:53,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 12:30:53,357 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-09-21 12:30:53,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 12:30:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-09-21 12:30:53,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 12:30:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787647328] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 12:30:53,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 12:30:53,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2024-09-21 12:30:53,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016539590] [2024-09-21 12:30:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 12:30:53,502 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-21 12:30:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 12:30:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-21 12:30:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-21 12:30:53,503 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 12:30:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 12:30:53,543 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-09-21 12:30:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 12:30:53,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2024-09-21 12:30:53,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 12:30:53,544 INFO L225 Difference]: With dead ends: 60 [2024-09-21 12:30:53,544 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 12:30:53,545 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-21 12:30:53,545 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 12:30:53,545 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 12:30:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 12:30:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 12:30:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-21 12:30:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 12:30:53,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-09-21 12:30:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 12:30:53,546 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 12:30:53,546 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-21 12:30:53,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 12:30:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 12:30:53,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 12:30:53,549 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 12:30:53,564 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-21 12:30:53,753 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-21 12:30:53,756 INFO L408 BasicCegarLoop]: Path program histogram: [15, 1] [2024-09-21 12:30:53,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 12:30:54,123 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 12:30:54,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:30:54 BoogieIcfgContainer [2024-09-21 12:30:54,135 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 12:30:54,135 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 12:30:54,135 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 12:30:54,135 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 12:30:54,135 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:29:52" (3/4) ... [2024-09-21 12:30:54,137 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 12:30:54,178 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 12:30:54,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 12:30:54,179 INFO L158 Benchmark]: Toolchain (without parser) took 62254.14ms. Allocated memory was 163.6MB in the beginning and 937.4MB in the end (delta: 773.8MB). Free memory was 93.0MB in the beginning and 528.0MB in the end (delta: -435.0MB). Peak memory consumption was 340.9MB. Max. memory is 16.1GB. [2024-09-21 12:30:54,179 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 119.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:30:54,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.64ms. Allocated memory is still 163.6MB. Free memory was 93.0MB in the beginning and 134.4MB in the end (delta: -41.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2024-09-21 12:30:54,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.35ms. Allocated memory is still 163.6MB. Free memory was 134.3MB in the beginning and 133.4MB in the end (delta: 986.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 12:30:54,180 INFO L158 Benchmark]: Boogie Preprocessor took 38.33ms. Allocated memory is still 163.6MB. Free memory was 133.3MB in the beginning and 134.8MB in the end (delta: -1.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-09-21 12:30:54,181 INFO L158 Benchmark]: RCFGBuilder took 229.15ms. Allocated memory is still 163.6MB. Free memory was 134.8MB in the beginning and 123.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 12:30:54,181 INFO L158 Benchmark]: TraceAbstraction took 61733.12ms. Allocated memory was 163.6MB in the beginning and 937.4MB in the end (delta: 773.8MB). Free memory was 123.2MB in the beginning and 530.1MB in the end (delta: -406.9MB). Peak memory consumption was 365.9MB. Max. memory is 16.1GB. [2024-09-21 12:30:54,181 INFO L158 Benchmark]: Witness Printer took 43.23ms. Allocated memory is still 937.4MB. Free memory was 530.1MB in the beginning and 528.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 12:30:54,185 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 119.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.64ms. Allocated memory is still 163.6MB. Free memory was 93.0MB in the beginning and 134.4MB in the end (delta: -41.4MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.35ms. Allocated memory is still 163.6MB. Free memory was 134.3MB in the beginning and 133.4MB in the end (delta: 986.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.33ms. Allocated memory is still 163.6MB. Free memory was 133.3MB in the beginning and 134.8MB in the end (delta: -1.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * RCFGBuilder took 229.15ms. Allocated memory is still 163.6MB. Free memory was 134.8MB in the beginning and 123.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 61733.12ms. Allocated memory was 163.6MB in the beginning and 937.4MB in the end (delta: 773.8MB). Free memory was 123.2MB in the beginning and 530.1MB in the end (delta: -406.9MB). Peak memory consumption was 365.9MB. Max. memory is 16.1GB. * Witness Printer took 43.23ms. Allocated memory is still 937.4MB. Free memory was 530.1MB in the beginning and 528.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.3s, OverallIterations: 16, TraceHistogramMax: 16, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1144 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 993 mSDsluCounter, 1525 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1333 mSDsCounter, 428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1223 IncrementalHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 428 mSolverCounterUnsat, 192 mSDtfsCounter, 1223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2324 GetRequests, 1792 SyntacticMatches, 120 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5371 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=15, InterpolantAutomatonStates: 188, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 53.2s InterpolantComputationTime, 1843 NumberOfCodeBlocks, 1843 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 2610 ConstructedInterpolants, 0 QuantifiedInterpolants, 7780 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2970 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 45 InterpolantComputations, 2 PerfectInterpolantSequences, 5060/10830 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == ((long long) n + m)) RESULT: Ultimate proved your program to be correct! [2024-09-21 12:30:54,214 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE