./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-1.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 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/fibo_7-1.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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:47:06,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:47:06,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:47:06,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:47:06,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:47:06,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:47:06,218 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:47:06,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:47:06,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:47:06,224 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:47:06,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:47:06,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:47:06,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:47:06,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:47:06,226 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:47:06,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:47:06,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:47:06,227 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:47:06,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:47:06,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:47:06,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:47:06,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:47:06,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:47:06,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:47:06,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:47:06,233 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:47:06,233 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:47:06,234 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:47:06,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:47:06,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:47:06,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:47:06,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:47:06,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:47:06,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:47:06,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:47:06,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:47:06,237 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:47:06,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:47:06,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:47:06,239 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:47:06,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:47:06,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:47:06,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:47:06,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:47:06,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:47:06,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:47:06,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:47:06,630 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:47:06,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-09-15 19:47:08,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:47:08,532 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:47:08,532 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-09-15 19:47:08,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3beebad22/6cd86fedb2d946ab8a50477fc513de4e/FLAG87650af27 [2024-09-15 19:47:08,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3beebad22/6cd86fedb2d946ab8a50477fc513de4e [2024-09-15 19:47:08,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:47:08,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:47:08,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:47:08,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:47:08,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:47:08,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afdf9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08, skipping insertion in model container [2024-09-15 19:47:08,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:47:08,764 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/fibo_7-1.c[741,754] [2024-09-15 19:47:08,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:47:08,786 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:47:08,798 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/fibo_7-1.c[741,754] [2024-09-15 19:47:08,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:47:08,817 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:47:08,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08 WrapperNode [2024-09-15 19:47:08,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:47:08,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:47:08,823 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:47:08,823 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:47:08,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,845 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:47:08,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:47:08,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:47:08,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:47:08,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:47:08,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,860 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,877 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]. [2024-09-15 19:47:08,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:47:08,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:47:08,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:47:08,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:47:08,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (1/1) ... [2024-09-15 19:47:08,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:47:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:08,930 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) [2024-09-15 19:47:08,937 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 [2024-09-15 19:47:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:47:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:47:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:47:08,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:47:08,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:47:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:47:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:47:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:47:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-09-15 19:47:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-09-15 19:47:09,062 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:47:09,065 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:47:09,200 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-15 19:47:09,201 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:47:09,228 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:47:09,228 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 19:47:09,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:47:09 BoogieIcfgContainer [2024-09-15 19:47:09,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:47:09,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:47:09,231 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:47:09,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:47:09,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:47:08" (1/3) ... [2024-09-15 19:47:09,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9750cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:47:09, skipping insertion in model container [2024-09-15 19:47:09,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:08" (2/3) ... [2024-09-15 19:47:09,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9750cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:47:09, skipping insertion in model container [2024-09-15 19:47:09,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:47:09" (3/3) ... [2024-09-15 19:47:09,237 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2024-09-15 19:47:09,260 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:47:09,260 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:47:09,320 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:47:09,330 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;@206709eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:47:09,331 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:47:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:47:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-15 19:47:09,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:09,345 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:09,346 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:09,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 358193300, now seen corresponding path program 1 times [2024-09-15 19:47:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801082647] [2024-09-15 19:47:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:47:09,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:09,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801082647] [2024-09-15 19:47:09,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801082647] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:47:09,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:47:09,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:47:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715339068] [2024-09-15 19:47:09,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:47:09,714 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:47:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:47:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:47:09,741 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 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) [2024-09-15 19:47:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:09,861 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-09-15 19:47:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:47:09,864 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 [2024-09-15 19:47:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:09,887 INFO L225 Difference]: With dead ends: 35 [2024-09-15 19:47:09,888 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 19:47:09,891 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 [2024-09-15 19:47:09,896 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:09,898 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 19:47:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-15 19:47:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-15 19:47:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-15 19:47:09,951 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2024-09-15 19:47:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:09,952 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-15 19:47:09,952 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) [2024-09-15 19:47:09,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-15 19:47:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-15 19:47:09,955 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:09,955 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:09,955 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:47:09,955 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:09,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1069801351, now seen corresponding path program 1 times [2024-09-15 19:47:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:09,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110037182] [2024-09-15 19:47:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:47:10,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:10,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110037182] [2024-09-15 19:47:10,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110037182] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:47:10,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:47:10,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:47:10,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614994713] [2024-09-15 19:47:10,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:47:10,077 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:47:10,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:47:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:47:10,078 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-15 19:47:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:10,146 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-09-15 19:47:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:47:10,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 14 [2024-09-15 19:47:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:10,148 INFO L225 Difference]: With dead ends: 27 [2024-09-15 19:47:10,148 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 19:47:10,148 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 [2024-09-15 19:47:10,149 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:10,150 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 19:47:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-15 19:47:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-15 19:47:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-15 19:47:10,165 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2024-09-15 19:47:10,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:10,166 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-15 19:47:10,167 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-09-15 19:47:10,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-15 19:47:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-15 19:47:10,170 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:10,170 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:10,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 19:47:10,170 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:10,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash -648535868, now seen corresponding path program 1 times [2024-09-15 19:47:10,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:10,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532330629] [2024-09-15 19:47:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-15 19:47:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 19:47:10,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:10,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532330629] [2024-09-15 19:47:10,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532330629] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:10,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567227063] [2024-09-15 19:47:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:10,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:10,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:10,361 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) [2024-09-15 19:47:10,363 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:47:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 19:47:10,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 19:47:10,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-15 19:47:10,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567227063] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:10,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:10,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-09-15 19:47:10,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122714739] [2024-09-15 19:47:10,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:10,792 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 19:47:10,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 19:47:10,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:47:10,794 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-15 19:47:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:10,890 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-09-15 19:47:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 19:47:10,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-15 19:47:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:10,892 INFO L225 Difference]: With dead ends: 38 [2024-09-15 19:47:10,892 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 19:47:10,893 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-15 19:47:10,894 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:10,894 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 19:47:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-15 19:47:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-15 19:47:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-15 19:47:10,901 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2024-09-15 19:47:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:10,902 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-15 19:47:10,902 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-15 19:47:10,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-15 19:47:10,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-15 19:47:10,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:10,904 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:10,923 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:47:11,108 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:11,109 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:11,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:11,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1169471199, now seen corresponding path program 1 times [2024-09-15 19:47:11,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:11,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795578572] [2024-09-15 19:47:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:11,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-15 19:47:11,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795578572] [2024-09-15 19:47:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795578572] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661131006] [2024-09-15 19:47:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:11,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:11,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:11,269 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) [2024-09-15 19:47:11,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:47:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 19:47:11,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-15 19:47:11,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-15 19:47:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661131006] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:11,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:11,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-15 19:47:11,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727635253] [2024-09-15 19:47:11,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:11,589 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-15 19:47:11,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-15 19:47:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-15 19:47:11,590 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 19:47:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:11,719 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-09-15 19:47:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 19:47:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-15 19:47:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:11,721 INFO L225 Difference]: With dead ends: 41 [2024-09-15 19:47:11,721 INFO L226 Difference]: Without dead ends: 37 [2024-09-15 19:47:11,722 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:47:11,723 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:11,723 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 83 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-15 19:47:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-15 19:47:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2024-09-15 19:47:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-09-15 19:47:11,734 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2024-09-15 19:47:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:11,734 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-09-15 19:47:11,734 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 19:47:11,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-09-15 19:47:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 19:47:11,736 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:11,736 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:11,754 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-15 19:47:11,936 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:11,937 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:11,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash 413055705, now seen corresponding path program 2 times [2024-09-15 19:47:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660442413] [2024-09-15 19:47:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:12,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:12,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:12,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:12,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:12,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:12,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-15 19:47:12,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660442413] [2024-09-15 19:47:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660442413] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350833019] [2024-09-15 19:47:12,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:47:12,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:12,157 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) [2024-09-15 19:47:12,159 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:47:12,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:47:12,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:12,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-15 19:47:12,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-15 19:47:12,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-15 19:47:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350833019] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:12,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:12,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2024-09-15 19:47:12,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425942268] [2024-09-15 19:47:12,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:12,773 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-15 19:47:12,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:12,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-15 19:47:12,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-09-15 19:47:12,775 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-15 19:47:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:12,970 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2024-09-15 19:47:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-15 19:47:12,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 40 [2024-09-15 19:47:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:12,972 INFO L225 Difference]: With dead ends: 72 [2024-09-15 19:47:12,972 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 19:47:12,975 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-09-15 19:47:12,976 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:12,976 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 91 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 19:47:12,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 19:47:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-15 19:47:12,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-15 19:47:12,992 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2024-09-15 19:47:12,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:12,993 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-15 19:47:12,993 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-15 19:47:12,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-15 19:47:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-15 19:47:12,995 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:12,997 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:13,015 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 19:47:13,201 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:13,202 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:13,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash -926093039, now seen corresponding path program 3 times [2024-09-15 19:47:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:13,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067724685] [2024-09-15 19:47:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 19:47:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067724685] [2024-09-15 19:47:13,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067724685] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:13,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706082564] [2024-09-15 19:47:13,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 19:47:13,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:13,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:13,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:13,611 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:47:13,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-15 19:47:13,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:13,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-15 19:47:13,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-15 19:47:13,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-15 19:47:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706082564] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:14,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:14,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 16 [2024-09-15 19:47:14,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488458132] [2024-09-15 19:47:14,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:14,090 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-15 19:47:14,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-15 19:47:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-09-15 19:47:14,091 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-15 19:47:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:14,248 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2024-09-15 19:47:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 19:47:14,249 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 68 [2024-09-15 19:47:14,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:14,252 INFO L225 Difference]: With dead ends: 83 [2024-09-15 19:47:14,252 INFO L226 Difference]: Without dead ends: 79 [2024-09-15 19:47:14,252 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-09-15 19:47:14,253 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:14,253 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 109 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-15 19:47:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-09-15 19:47:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 46 states have internal predecessors, (54), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (32), 18 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-15 19:47:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-09-15 19:47:14,272 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 68 [2024-09-15 19:47:14,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:14,273 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-09-15 19:47:14,273 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (16), 1 states have call predecessors, (16), 5 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2024-09-15 19:47:14,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-09-15 19:47:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-15 19:47:14,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:14,284 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:14,301 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 19:47:14,485 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:14,485 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:14,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash -257182465, now seen corresponding path program 4 times [2024-09-15 19:47:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:14,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966330791] [2024-09-15 19:47:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:14,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-09-15 19:47:15,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966330791] [2024-09-15 19:47:15,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966330791] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945780977] [2024-09-15 19:47:15,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 19:47:15,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:15,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:15,099 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) [2024-09-15 19:47:15,101 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:47:15,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 19:47:15,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:15,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 19:47:15,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2024-09-15 19:47:15,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-09-15 19:47:16,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945780977] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:16,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:16,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 20 [2024-09-15 19:47:16,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87349035] [2024-09-15 19:47:16,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:16,135 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 19:47:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:16,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 19:47:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-15 19:47:16,137 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (20), 1 states have call predecessors, (20), 6 states have return successors, (25), 10 states have call predecessors, (25), 17 states have call successors, (25) [2024-09-15 19:47:16,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:16,362 INFO L93 Difference]: Finished difference Result 150 states and 231 transitions. [2024-09-15 19:47:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 19:47:16,363 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (20), 1 states have call predecessors, (20), 6 states have return successors, (25), 10 states have call predecessors, (25), 17 states have call successors, (25) Word has length 109 [2024-09-15 19:47:16,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:16,368 INFO L225 Difference]: With dead ends: 150 [2024-09-15 19:47:16,368 INFO L226 Difference]: Without dead ends: 146 [2024-09-15 19:47:16,369 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2024-09-15 19:47:16,369 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 58 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:16,370 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 110 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:47:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-09-15 19:47:16,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 137. [2024-09-15 19:47:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 86 states have internal predecessors, (102), 31 states have call successors, (31), 12 states have call predecessors, (31), 18 states have return successors, (81), 38 states have call predecessors, (81), 30 states have call successors, (81) [2024-09-15 19:47:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 214 transitions. [2024-09-15 19:47:16,401 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 214 transitions. Word has length 109 [2024-09-15 19:47:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:16,402 INFO L474 AbstractCegarLoop]: Abstraction has 137 states and 214 transitions. [2024-09-15 19:47:16,403 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.0) internal successors, (54), 20 states have internal predecessors, (54), 17 states have call successors, (20), 1 states have call predecessors, (20), 6 states have return successors, (25), 10 states have call predecessors, (25), 17 states have call successors, (25) [2024-09-15 19:47:16,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 214 transitions. [2024-09-15 19:47:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-09-15 19:47:16,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:16,408 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:16,425 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-15 19:47:16,612 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 19:47:16,613 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:16,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -2056076178, now seen corresponding path program 5 times [2024-09-15 19:47:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:16,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737174880] [2024-09-15 19:47:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:16,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:16,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:16,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 19:47:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 403 proven. 706 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2024-09-15 19:47:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737174880] [2024-09-15 19:47:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737174880] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765330657] [2024-09-15 19:47:17,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 19:47:17,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:17,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:17,626 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) [2024-09-15 19:47:17,629 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 19:47:17,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-09-15 19:47:17,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:17,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-15 19:47:17,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 630 proven. 586 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-09-15 19:47:17,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 634 proven. 619 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2024-09-15 19:47:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765330657] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:19,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:19,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 21] total 33 [2024-09-15 19:47:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623934034] [2024-09-15 19:47:19,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:19,767 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-15 19:47:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-15 19:47:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2024-09-15 19:47:19,769 INFO L87 Difference]: Start difference. First operand 137 states and 214 transitions. Second operand has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (33), 1 states have call predecessors, (33), 12 states have return successors, (43), 20 states have call predecessors, (43), 25 states have call successors, (43) [2024-09-15 19:47:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:20,240 INFO L93 Difference]: Finished difference Result 229 states and 428 transitions. [2024-09-15 19:47:20,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-15 19:47:20,240 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (33), 1 states have call predecessors, (33), 12 states have return successors, (43), 20 states have call predecessors, (43), 25 states have call successors, (43) Word has length 218 [2024-09-15 19:47:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:20,243 INFO L225 Difference]: With dead ends: 229 [2024-09-15 19:47:20,243 INFO L226 Difference]: Without dead ends: 101 [2024-09-15 19:47:20,246 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 478 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=641, Invalid=1909, Unknown=0, NotChecked=0, Total=2550 [2024-09-15 19:47:20,247 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:20,247 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 204 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:47:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-09-15 19:47:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2024-09-15 19:47:20,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 17 states have call successors, (17), 14 states have call predecessors, (17), 9 states have return successors, (37), 14 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-15 19:47:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2024-09-15 19:47:20,267 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 218 [2024-09-15 19:47:20,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:20,268 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2024-09-15 19:47:20,269 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (33), 1 states have call predecessors, (33), 12 states have return successors, (43), 20 states have call predecessors, (43), 25 states have call successors, (43) [2024-09-15 19:47:20,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2024-09-15 19:47:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-09-15 19:47:20,275 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:20,275 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:20,296 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 19:47:20,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:20,476 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:20,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1181858135, now seen corresponding path program 6 times [2024-09-15 19:47:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384371098] [2024-09-15 19:47:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:22,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:22,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:23,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 19:47:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 19:47:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-09-15 19:47:24,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:24,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384371098] [2024-09-15 19:47:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384371098] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:24,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591057405] [2024-09-15 19:47:24,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 19:47:24,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:24,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:24,682 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) [2024-09-15 19:47:24,684 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 19:47:24,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2024-09-15 19:47:24,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:24,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 167 conjuncts are in the unsatisfiable core [2024-09-15 19:47:24,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-09-15 19:47:25,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2024-09-15 19:47:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591057405] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:26,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:26,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-09-15 19:47:26,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373524440] [2024-09-15 19:47:26,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:26,679 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-15 19:47:26,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-15 19:47:26,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-15 19:47:26,682 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (19), 19 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-15 19:47:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:26,970 INFO L93 Difference]: Finished difference Result 108 states and 158 transitions. [2024-09-15 19:47:26,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-15 19:47:26,971 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (19), 19 states have call predecessors, (19), 6 states have call successors, (19) Word has length 286 [2024-09-15 19:47:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:26,973 INFO L225 Difference]: With dead ends: 108 [2024-09-15 19:47:26,973 INFO L226 Difference]: Without dead ends: 104 [2024-09-15 19:47:26,974 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-15 19:47:26,974 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:26,975 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 750 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 19:47:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-15 19:47:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2024-09-15 19:47:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 64 states have internal predecessors, (68), 19 states have call successors, (19), 14 states have call predecessors, (19), 11 states have return successors, (55), 18 states have call predecessors, (55), 18 states have call successors, (55) [2024-09-15 19:47:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2024-09-15 19:47:27,002 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 286 [2024-09-15 19:47:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:27,003 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2024-09-15 19:47:27,004 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 15 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (19), 19 states have call predecessors, (19), 6 states have call successors, (19) [2024-09-15 19:47:27,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2024-09-15 19:47:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-09-15 19:47:27,010 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:27,011 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:27,039 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-15 19:47:27,214 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:27,215 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:27,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:27,215 INFO L85 PathProgramCache]: Analyzing trace with hash 2079867300, now seen corresponding path program 7 times [2024-09-15 19:47:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:27,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124166267] [2024-09-15 19:47:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:27,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:27,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:27,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:27,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:27,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 19:47:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 19:47:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 19:47:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 844 proven. 1612 refuted. 0 times theorem prover too weak. 4664 trivial. 0 not checked. [2024-09-15 19:47:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124166267] [2024-09-15 19:47:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124166267] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242178384] [2024-09-15 19:47:28,604 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-15 19:47:28,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:28,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:28,606 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) [2024-09-15 19:47:28,608 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-15 19:47:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:28,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-15 19:47:28,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1111 proven. 600 refuted. 0 times theorem prover too weak. 5409 trivial. 0 not checked. [2024-09-15 19:47:28,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1111 proven. 651 refuted. 0 times theorem prover too weak. 5358 trivial. 0 not checked. [2024-09-15 19:47:31,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242178384] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:31,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:31,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 11, 17] total 35 [2024-09-15 19:47:31,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235165958] [2024-09-15 19:47:31,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:31,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-15 19:47:31,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:31,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-15 19:47:31,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 19:47:31,058 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (44), 25 states have call predecessors, (44), 24 states have call successors, (44) [2024-09-15 19:47:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:31,677 INFO L93 Difference]: Finished difference Result 230 states and 452 transitions. [2024-09-15 19:47:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-15 19:47:31,678 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (44), 25 states have call predecessors, (44), 24 states have call successors, (44) Word has length 354 [2024-09-15 19:47:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:31,680 INFO L225 Difference]: With dead ends: 230 [2024-09-15 19:47:31,680 INFO L226 Difference]: Without dead ends: 127 [2024-09-15 19:47:31,683 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 794 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=759, Invalid=2547, Unknown=0, NotChecked=0, Total=3306 [2024-09-15 19:47:31,684 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 165 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:31,684 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 209 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 19:47:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-09-15 19:47:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2024-09-15 19:47:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 76 states have internal predecessors, (80), 23 states have call successors, (23), 18 states have call predecessors, (23), 11 states have return successors, (47), 18 states have call predecessors, (47), 22 states have call successors, (47) [2024-09-15 19:47:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2024-09-15 19:47:31,702 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 354 [2024-09-15 19:47:31,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:31,702 INFO L474 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2024-09-15 19:47:31,703 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 35 states have internal predecessors, (87), 24 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (44), 25 states have call predecessors, (44), 24 states have call successors, (44) [2024-09-15 19:47:31,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2024-09-15 19:47:31,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2024-09-15 19:47:31,708 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:31,708 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:31,729 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-15 19:47:31,908 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:31,909 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:31,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:31,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1239419108, now seen corresponding path program 8 times [2024-09-15 19:47:31,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:31,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906252346] [2024-09-15 19:47:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:31,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:32,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-15 19:47:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-15 19:47:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-15 19:47:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 913 proven. 1281 refuted. 0 times theorem prover too weak. 4926 trivial. 0 not checked. [2024-09-15 19:47:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906252346] [2024-09-15 19:47:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906252346] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514457552] [2024-09-15 19:47:33,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:47:33,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:33,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:33,270 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) [2024-09-15 19:47:33,272 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-15 19:47:33,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:47:33,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:33,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-15 19:47:33,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1507 refuted. 0 times theorem prover too weak. 5194 trivial. 0 not checked. [2024-09-15 19:47:33,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1577 refuted. 0 times theorem prover too weak. 5124 trivial. 0 not checked. [2024-09-15 19:47:36,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514457552] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:36,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:36,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 19] total 33 [2024-09-15 19:47:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086777794] [2024-09-15 19:47:36,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:36,168 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-15 19:47:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-15 19:47:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2024-09-15 19:47:36,172 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (44), 20 states have call predecessors, (44), 26 states have call successors, (44) [2024-09-15 19:47:36,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:36,579 INFO L93 Difference]: Finished difference Result 214 states and 297 transitions. [2024-09-15 19:47:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-15 19:47:36,580 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (44), 20 states have call predecessors, (44), 26 states have call successors, (44) Word has length 354 [2024-09-15 19:47:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:36,583 INFO L225 Difference]: With dead ends: 214 [2024-09-15 19:47:36,583 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:47:36,585 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 792 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=469, Invalid=1423, Unknown=0, NotChecked=0, Total=1892 [2024-09-15 19:47:36,586 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 54 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:36,587 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 236 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-15 19:47:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:47:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:47:36,587 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) [2024-09-15 19:47:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:47:36,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 354 [2024-09-15 19:47:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:36,589 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:47:36,589 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 26 states have call successors, (31), 1 states have call predecessors, (31), 14 states have return successors, (44), 20 states have call predecessors, (44), 26 states have call successors, (44) [2024-09-15 19:47:36,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:47:36,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:47:36,592 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:47:36,612 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-15 19:47:36,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 19:47:36,797 INFO L408 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2024-09-15 19:47:36,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:47:39,298 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:47:39,323 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-15 19:47:39,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:47:39 BoogieIcfgContainer [2024-09-15 19:47:39,326 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:47:39,326 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:47:39,326 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:47:39,326 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:47:39,328 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:47:09" (3/4) ... [2024-09-15 19:47:39,329 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:47:39,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:47:39,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:47:39,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-09-15 19:47:39,338 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-15 19:47:39,339 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-15 19:47:39,339 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 19:47:39,340 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 19:47:39,426 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:47:39,426 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:47:39,426 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:47:39,427 INFO L158 Benchmark]: Toolchain (without parser) took 30862.29ms. Allocated memory was 65.0MB in the beginning and 553.6MB in the end (delta: 488.6MB). Free memory was 32.1MB in the beginning and 491.1MB in the end (delta: -458.9MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2024-09-15 19:47:39,427 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:47:39,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.63ms. Allocated memory is still 65.0MB. Free memory was 32.0MB in the beginning and 36.9MB in the end (delta: -4.9MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2024-09-15 19:47:39,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.44ms. Allocated memory is still 65.0MB. Free memory was 36.9MB in the beginning and 35.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:47:39,428 INFO L158 Benchmark]: Boogie Preprocessor took 42.18ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 34.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 19:47:39,429 INFO L158 Benchmark]: RCFGBuilder took 339.33ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 23.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-15 19:47:39,429 INFO L158 Benchmark]: TraceAbstraction took 30094.78ms. Allocated memory was 65.0MB in the beginning and 553.6MB in the end (delta: 488.6MB). Free memory was 22.3MB in the beginning and 495.3MB in the end (delta: -473.0MB). Peak memory consumption was 314.1MB. Max. memory is 16.1GB. [2024-09-15 19:47:39,430 INFO L158 Benchmark]: Witness Printer took 99.99ms. Allocated memory is still 553.6MB. Free memory was 495.3MB in the beginning and 491.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 19:47:39,431 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 52.4MB. Free memory is still 35.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.63ms. Allocated memory is still 65.0MB. Free memory was 32.0MB in the beginning and 36.9MB in the end (delta: -4.9MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.44ms. Allocated memory is still 65.0MB. Free memory was 36.9MB in the beginning and 35.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.18ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 34.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.33ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 23.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 30094.78ms. Allocated memory was 65.0MB in the beginning and 553.6MB in the end (delta: 488.6MB). Free memory was 22.3MB in the beginning and 495.3MB in the end (delta: -473.0MB). Peak memory consumption was 314.1MB. Max. memory is 16.1GB. * Witness Printer took 99.99ms. Allocated memory is still 553.6MB. Free memory was 495.3MB in the beginning and 491.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 29]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.5s, OverallIterations: 11, TraceHistogramMax: 51, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 567 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 515 mSDsluCounter, 1936 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1658 mSDsCounter, 537 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2699 IncrementalHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 537 mSolverCounterUnsat, 278 mSDtfsCounter, 2699 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3668 GetRequests, 3370 SyntacticMatches, 42 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=7, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 54 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 2991 NumberOfCodeBlocks, 2908 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 4444 ConstructedInterpolants, 0 QuantifiedInterpolants, 7930 SizeOfPredicates, 33 NumberOfNonLiveVariables, 3230 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 52070/66657 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: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Ensures: ((0 < \old(n)) || (\result == 0)) RESULT: Ultimate proved your program to be correct! [2024-09-15 19:47:39,465 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