./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_10x0-1.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 a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_10x0-1.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 68d0cd7d514b491e1404560081afc21267eb1b3dae98cdb9832a8634357d65e4 --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-dev-a9b967e-m [2024-09-12 16:31:07,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:31:08,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:31:08,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:31:08,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:31:08,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:31:08,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:31:08,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:31:08,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:31:08,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:31:08,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:31:08,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:31:08,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:31:08,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:31:08,048 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:31:08,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:31:08,051 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:31:08,051 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:31:08,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:31:08,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:31:08,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:31:08,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:31:08,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:31:08,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:31:08,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:31:08,054 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:31:08,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:31:08,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:31:08,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:31:08,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:31:08,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:31:08,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:31:08,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:31:08,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:31:08,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:31:08,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:31:08,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:31:08,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:31:08,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:31:08,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:31:08,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:31:08,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:31:08,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68d0cd7d514b491e1404560081afc21267eb1b3dae98cdb9832a8634357d65e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:31:08,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:31:08,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:31:08,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:31:08,359 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:31:08,359 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:31:08,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2024-09-12 16:31:09,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:31:09,812 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:31:09,813 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2024-09-12 16:31:09,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9afa0013c/075336d058d64d2e925fa83566341ae3/FLAG80ab49346 [2024-09-12 16:31:09,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9afa0013c/075336d058d64d2e925fa83566341ae3 [2024-09-12 16:31:09,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:31:09,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:31:09,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:31:09,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:31:09,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:31:09,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:31:09" (1/1) ... [2024-09-12 16:31:09,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572cf494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:09, skipping insertion in model container [2024-09-12 16:31:09,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:31:09" (1/1) ... [2024-09-12 16:31:09,855 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:31:09,977 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_10x0-1.c[481,494] [2024-09-12 16:31:09,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:31:09,991 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:31:10,003 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_10x0-1.c[481,494] [2024-09-12 16:31:10,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:31:10,018 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:31:10,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10 WrapperNode [2024-09-12 16:31:10,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:31:10,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:31:10,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:31:10,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:31:10,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,036 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:31:10,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:31:10,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:31:10,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:31:10,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:31:10,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,047 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,061 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]. [2024-09-12 16:31:10,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:31:10,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:31:10,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:31:10,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:31:10,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (1/1) ... [2024-09-12 16:31:10,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:31:10,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:10,101 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) [2024-09-12 16:31:10,113 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 [2024-09-12 16:31:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:31:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:31:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:31:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:31:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:31:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-12 16:31:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-12 16:31:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:31:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:31:10,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:31:10,198 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:31:10,200 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:31:10,306 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-12 16:31:10,306 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:31:10,330 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:31:10,331 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:31:10,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:31:10 BoogieIcfgContainer [2024-09-12 16:31:10,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:31:10,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:31:10,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:31:10,336 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:31:10,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:31:09" (1/3) ... [2024-09-12 16:31:10,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f42dcdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:31:10, skipping insertion in model container [2024-09-12 16:31:10,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:31:10" (2/3) ... [2024-09-12 16:31:10,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f42dcdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:31:10, skipping insertion in model container [2024-09-12 16:31:10,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:31:10" (3/3) ... [2024-09-12 16:31:10,340 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2024-09-12 16:31:10,355 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:31:10,355 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:31:10,407 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:31:10,413 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;@4d7d0365, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:31:10,414 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:31:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 16:31:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 16:31:10,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:10,428 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:10,429 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:10,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:10,434 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-12 16:31:10,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:10,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565261710] [2024-09-12 16:31:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:10,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:10,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:10,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:31:10,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:10,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565261710] [2024-09-12 16:31:10,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565261710] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:31:10,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:31:10,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 16:31:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624261225] [2024-09-12 16:31:10,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:31:10,725 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 16:31:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 16:31:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 16:31:10,743 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 16:31:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:10,794 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-12 16:31:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 16:31:10,797 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 [2024-09-12 16:31:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:10,802 INFO L225 Difference]: With dead ends: 30 [2024-09-12 16:31:10,802 INFO L226 Difference]: Without dead ends: 18 [2024-09-12 16:31:10,804 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 [2024-09-12 16:31:10,808 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:10,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:31:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-12 16:31:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-12 16:31:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 16:31:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-12 16:31:10,843 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-12 16:31:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:10,844 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-12 16:31:10,844 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) [2024-09-12 16:31:10,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-12 16:31:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-12 16:31:10,846 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:10,846 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:10,846 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:31:10,846 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:10,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:10,847 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-12 16:31:10,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:10,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334213622] [2024-09-12 16:31:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:10,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:10,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:10,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:10,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 16:31:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:11,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334213622] [2024-09-12 16:31:11,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334213622] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:11,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955931899] [2024-09-12 16:31:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:11,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:11,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:11,032 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) [2024-09-12 16:31:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:31:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:11,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 16:31:11,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-12 16:31:11,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:31:11,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955931899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:11,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-12 16:31:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211364057] [2024-09-12 16:31:11,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:11,313 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-12 16:31:11,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:11,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-12 16:31:11,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-12 16:31:11,316 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 16:31:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:11,361 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-12 16:31:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:31:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-12 16:31:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:11,362 INFO L225 Difference]: With dead ends: 25 [2024-09-12 16:31:11,362 INFO L226 Difference]: Without dead ends: 21 [2024-09-12 16:31:11,363 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-12 16:31:11,364 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:11,364 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:31:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-12 16:31:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-12 16:31:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-12 16:31:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-12 16:31:11,369 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-12 16:31:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:11,369 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-12 16:31:11,369 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-12 16:31:11,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-12 16:31:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-12 16:31:11,370 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:11,370 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:11,383 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 16:31:11,573 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:11,574 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:11,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-12 16:31:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173418961] [2024-09-12 16:31:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:11,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:11,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:11,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:11,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 16:31:11,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173418961] [2024-09-12 16:31:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173418961] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231826646] [2024-09-12 16:31:11,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:31:11,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:11,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:11,755 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) [2024-09-12 16:31:11,756 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:31:11,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:31:11,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:11,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 16:31:11,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 16:31:11,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-12 16:31:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231826646] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:12,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:12,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-12 16:31:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312551328] [2024-09-12 16:31:12,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:12,100 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-12 16:31:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-12 16:31:12,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-12 16:31:12,101 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-12 16:31:12,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:12,146 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-12 16:31:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-12 16:31:12,147 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-12 16:31:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:12,147 INFO L225 Difference]: With dead ends: 28 [2024-09-12 16:31:12,147 INFO L226 Difference]: Without dead ends: 24 [2024-09-12 16:31:12,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-12 16:31:12,149 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:12,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:31:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-12 16:31:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-12 16:31:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 16:31:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-12 16:31:12,153 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-12 16:31:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:12,154 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-12 16:31:12,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-12 16:31:12,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-12 16:31:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-12 16:31:12,155 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:12,155 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:12,168 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 16:31:12,359 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:12,360 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:12,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-12 16:31:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:12,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59724788] [2024-09-12 16:31:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:12,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:12,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:12,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:12,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:12,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 16:31:12,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:12,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59724788] [2024-09-12 16:31:12,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59724788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:12,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883268681] [2024-09-12 16:31:12,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:31:12,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:12,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:12,523 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) [2024-09-12 16:31:12,525 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:31:12,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-12 16:31:12,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:12,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-12 16:31:12,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 16:31:12,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-12 16:31:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883268681] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:13,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-12 16:31:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276748924] [2024-09-12 16:31:13,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:13,021 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 16:31:13,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 16:31:13,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-12 16:31:13,022 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-12 16:31:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:13,089 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-12 16:31:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-12 16:31:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-12 16:31:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:13,090 INFO L225 Difference]: With dead ends: 31 [2024-09-12 16:31:13,090 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 16:31:13,090 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-09-12 16:31:13,091 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:13,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:31:13,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 16:31:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-12 16:31:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-12 16:31:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-12 16:31:13,096 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-12 16:31:13,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:13,097 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-12 16:31:13,097 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-12 16:31:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-12 16:31:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-12 16:31:13,098 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:13,098 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:13,112 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 16:31:13,302 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:13,303 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:13,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-12 16:31:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484602028] [2024-09-12 16:31:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:13,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:13,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:13,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:13,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:13,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:13,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-12 16:31:13,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:13,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484602028] [2024-09-12 16:31:13,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484602028] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:13,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932820494] [2024-09-12 16:31:13,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:31:13,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:13,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:13,521 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) [2024-09-12 16:31:13,523 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:31:13,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:31:13,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:13,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 16:31:13,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-12 16:31:13,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-12 16:31:14,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932820494] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:14,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:14,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-12 16:31:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683818425] [2024-09-12 16:31:14,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:14,174 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-12 16:31:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-12 16:31:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-12 16:31:14,176 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-12 16:31:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:14,235 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-12 16:31:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 16:31:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-12 16:31:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:14,237 INFO L225 Difference]: With dead ends: 34 [2024-09-12 16:31:14,237 INFO L226 Difference]: Without dead ends: 30 [2024-09-12 16:31:14,237 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-12 16:31:14,238 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:14,238 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:31:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-12 16:31:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-12 16:31:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-12 16:31:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-12 16:31:14,247 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-12 16:31:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:14,247 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-12 16:31:14,248 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-12 16:31:14,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-12 16:31:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 16:31:14,249 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:14,249 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:14,261 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 16:31:14,449 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:14,450 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:14,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:14,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-12 16:31:14,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:14,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026081286] [2024-09-12 16:31:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:14,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 16:31:14,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:14,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026081286] [2024-09-12 16:31:14,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026081286] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:14,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846588049] [2024-09-12 16:31:14,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-12 16:31:14,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:14,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:14,672 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) [2024-09-12 16:31:14,674 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 16:31:14,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-12 16:31:14,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:14,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-12 16:31:14,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-12 16:31:14,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 16:31:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846588049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:15,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:15,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-12 16:31:15,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590591480] [2024-09-12 16:31:15,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:15,658 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 16:31:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:15,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 16:31:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-12 16:31:15,659 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-12 16:31:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:15,745 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-12 16:31:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 16:31:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-12 16:31:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:15,747 INFO L225 Difference]: With dead ends: 37 [2024-09-12 16:31:15,747 INFO L226 Difference]: Without dead ends: 33 [2024-09-12 16:31:15,747 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-12 16:31:15,748 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:15,748 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:31:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-12 16:31:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-12 16:31:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 16:31:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-12 16:31:15,757 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-12 16:31:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:15,757 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-12 16:31:15,757 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-12 16:31:15,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-12 16:31:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-12 16:31:15,758 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:15,759 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:15,775 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 16:31:15,962 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 16:31:15,963 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:15,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:15,963 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-12 16:31:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:15,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701401946] [2024-09-12 16:31:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-12 16:31:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701401946] [2024-09-12 16:31:16,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701401946] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831479188] [2024-09-12 16:31:16,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-12 16:31:16,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:16,240 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) [2024-09-12 16:31:16,241 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 16:31:16,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-12 16:31:16,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:16,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-12 16:31:16,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-12 16:31:16,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 16:31:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831479188] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:17,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:17,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-12 16:31:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133237233] [2024-09-12 16:31:17,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:17,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 16:31:17,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 16:31:17,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-12 16:31:17,452 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-12 16:31:17,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:17,527 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-12 16:31:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 16:31:17,528 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-12 16:31:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:17,529 INFO L225 Difference]: With dead ends: 40 [2024-09-12 16:31:17,529 INFO L226 Difference]: Without dead ends: 36 [2024-09-12 16:31:17,529 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-09-12 16:31:17,530 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:17,530 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:31:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-12 16:31:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-12 16:31:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-12 16:31:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-12 16:31:17,535 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-12 16:31:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:17,535 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-12 16:31:17,535 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-12 16:31:17,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-12 16:31:17,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-12 16:31:17,537 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:17,537 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:17,549 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-12 16:31:17,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:17,737 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:17,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-12 16:31:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:17,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591130561] [2024-09-12 16:31:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:17,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:17,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:17,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:17,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:17,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:17,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:17,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:17,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:18,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:18,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-12 16:31:18,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:18,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591130561] [2024-09-12 16:31:18,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591130561] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:18,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331131963] [2024-09-12 16:31:18,033 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-12 16:31:18,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:18,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:18,036 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) [2024-09-12 16:31:18,037 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 16:31:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:18,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-12 16:31:18,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-12 16:31:18,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-12 16:31:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331131963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:19,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:19,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-12 16:31:19,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527356197] [2024-09-12 16:31:19,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:19,568 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 16:31:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 16:31:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-12 16:31:19,569 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-12 16:31:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:19,655 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-12 16:31:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 16:31:19,656 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-12 16:31:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:19,656 INFO L225 Difference]: With dead ends: 43 [2024-09-12 16:31:19,657 INFO L226 Difference]: Without dead ends: 39 [2024-09-12 16:31:19,657 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-09-12 16:31:19,658 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:19,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 16:31:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-12 16:31:19,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-12 16:31:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-12 16:31:19,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-12 16:31:19,666 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-12 16:31:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:19,666 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-12 16:31:19,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-12 16:31:19,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-12 16:31:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-12 16:31:19,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:19,669 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:19,682 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 16:31:19,869 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:19,870 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:19,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-12 16:31:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:19,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855875934] [2024-09-12 16:31:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:19,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:19,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:19,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-12 16:31:20,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855875934] [2024-09-12 16:31:20,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855875934] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154331991] [2024-09-12 16:31:20,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:31:20,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:20,251 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) [2024-09-12 16:31:20,252 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 16:31:20,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:31:20,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:20,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-12 16:31:20,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-12 16:31:20,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-12 16:31:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154331991] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:22,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-12 16:31:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884446083] [2024-09-12 16:31:22,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:22,477 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-12 16:31:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-12 16:31:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-12 16:31:22,479 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-12 16:31:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:22,596 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-12 16:31:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 16:31:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-12 16:31:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:22,599 INFO L225 Difference]: With dead ends: 46 [2024-09-12 16:31:22,599 INFO L226 Difference]: Without dead ends: 42 [2024-09-12 16:31:22,600 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-12 16:31:22,601 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:22,601 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:31:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-12 16:31:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-12 16:31:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-12 16:31:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-12 16:31:22,607 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-12 16:31:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:22,607 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-12 16:31:22,607 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-12 16:31:22,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-12 16:31:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-12 16:31:22,608 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:22,609 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:22,621 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 16:31:22,810 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:22,811 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:22,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-12 16:31:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:22,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413522582] [2024-09-12 16:31:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:22,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:22,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:22,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:22,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-12 16:31:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:23,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413522582] [2024-09-12 16:31:23,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413522582] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591750367] [2024-09-12 16:31:23,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:31:23,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:23,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:23,200 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) [2024-09-12 16:31:23,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 16:31:23,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-12 16:31:23,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:23,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-12 16:31:23,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-12 16:31:23,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-12 16:31:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591750367] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:25,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:25,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 25 [2024-09-12 16:31:25,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455666179] [2024-09-12 16:31:25,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:25,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-12 16:31:25,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:25,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-12 16:31:25,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2024-09-12 16:31:25,978 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2024-09-12 16:31:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:26,087 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-12 16:31:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 16:31:26,087 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) Word has length 67 [2024-09-12 16:31:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:26,090 INFO L225 Difference]: With dead ends: 49 [2024-09-12 16:31:26,090 INFO L226 Difference]: Without dead ends: 45 [2024-09-12 16:31:26,091 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=375, Invalid=747, Unknown=0, NotChecked=0, Total=1122 [2024-09-12 16:31:26,091 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:26,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 109 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:31:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-12 16:31:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-12 16:31:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-12 16:31:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-12 16:31:26,099 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-12 16:31:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:26,099 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-12 16:31:26,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2024-09-12 16:31:26,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-12 16:31:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-12 16:31:26,100 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:31:26,100 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:31:26,118 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 16:31:26,301 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-12 16:31:26,301 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:31:26,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-12 16:31:26,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:31:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286941098] [2024-09-12 16:31:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:31:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:31:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:26,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:31:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:26,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:31:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:26,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:26,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:31:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:31:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-09-12 16:31:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:31:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286941098] [2024-09-12 16:31:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286941098] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:31:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393322948] [2024-09-12 16:31:27,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:31:27,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:31:27,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:31:27,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 16:31:27,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 16:31:27,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:31:27,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:31:27,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-12 16:31:27,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:31:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 19 proven. 155 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-12 16:31:28,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:31:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-12 16:31:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393322948] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:31:30,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:31:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 29, 29] total 41 [2024-09-12 16:31:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302206692] [2024-09-12 16:31:30,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:31:30,218 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-12 16:31:30,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:31:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-12 16:31:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1544, Unknown=0, NotChecked=0, Total=1640 [2024-09-12 16:31:30,220 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 7 states have call successors, (8), 1 states have call predecessors, (8), 15 states have return successors, (16), 15 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-12 16:31:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:31:31,095 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-09-12 16:31:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-12 16:31:31,096 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 7 states have call successors, (8), 1 states have call predecessors, (8), 15 states have return successors, (16), 15 states have call predecessors, (16), 7 states have call successors, (16) Word has length 73 [2024-09-12 16:31:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:31:31,096 INFO L225 Difference]: With dead ends: 48 [2024-09-12 16:31:31,096 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:31:31,098 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2024-09-12 16:31:31,098 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-12 16:31:31,098 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 471 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-12 16:31:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:31:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:31:31,098 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) [2024-09-12 16:31:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:31:31,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2024-09-12 16:31:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:31:31,099 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:31:31,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 7 states have call successors, (8), 1 states have call predecessors, (8), 15 states have return successors, (16), 15 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-12 16:31:31,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:31:31,099 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:31:31,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:31:31,101 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:31:31,115 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 16:31:31,302 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 16:31:31,305 INFO L408 BasicCegarLoop]: Path program histogram: [10, 1] [2024-09-12 16:31:31,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:31:31,636 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 16:31:31,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 04:31:31 BoogieIcfgContainer [2024-09-12 16:31:31,646 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 16:31:31,647 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 16:31:31,647 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 16:31:31,647 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 16:31:31,647 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:31:10" (3/4) ... [2024-09-12 16:31:31,649 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 16:31:31,651 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 16:31:31,652 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2024-09-12 16:31:31,652 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 16:31:31,656 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-12 16:31:31,656 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-09-12 16:31:31,656 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-12 16:31:31,657 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 16:31:31,721 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 16:31:31,721 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 16:31:31,721 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 16:31:31,722 INFO L158 Benchmark]: Toolchain (without parser) took 21888.76ms. Allocated memory was 71.3MB in the beginning and 337.6MB in the end (delta: 266.3MB). Free memory was 42.7MB in the beginning and 145.2MB in the end (delta: -102.4MB). Peak memory consumption was 165.8MB. Max. memory is 16.1GB. [2024-09-12 16:31:31,722 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 24.6MB in the beginning and 24.6MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:31:31,722 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.20ms. Allocated memory is still 71.3MB. Free memory was 42.5MB in the beginning and 31.7MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-12 16:31:31,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.35ms. Allocated memory is still 71.3MB. Free memory was 31.7MB in the beginning and 30.7MB in the end (delta: 998.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:31:31,723 INFO L158 Benchmark]: Boogie Preprocessor took 32.79ms. Allocated memory is still 71.3MB. Free memory was 30.7MB in the beginning and 29.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:31:31,723 INFO L158 Benchmark]: RCFGBuilder took 261.45ms. Allocated memory is still 71.3MB. Free memory was 29.1MB in the beginning and 41.4MB in the end (delta: -12.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2024-09-12 16:31:31,723 INFO L158 Benchmark]: TraceAbstraction took 21312.86ms. Allocated memory was 71.3MB in the beginning and 337.6MB in the end (delta: 266.3MB). Free memory was 40.7MB in the beginning and 149.3MB in the end (delta: -108.7MB). Peak memory consumption was 156.2MB. Max. memory is 16.1GB. [2024-09-12 16:31:31,723 INFO L158 Benchmark]: Witness Printer took 74.75ms. Allocated memory is still 337.6MB. Free memory was 149.3MB in the beginning and 145.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 16:31:31,724 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 24.6MB in the beginning and 24.6MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.20ms. Allocated memory is still 71.3MB. Free memory was 42.5MB in the beginning and 31.7MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.35ms. Allocated memory is still 71.3MB. Free memory was 31.7MB in the beginning and 30.7MB in the end (delta: 998.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.79ms. Allocated memory is still 71.3MB. Free memory was 30.7MB in the beginning and 29.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.45ms. Allocated memory is still 71.3MB. Free memory was 29.1MB in the beginning and 41.4MB in the end (delta: -12.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 21312.86ms. Allocated memory was 71.3MB in the beginning and 337.6MB in the end (delta: 266.3MB). Free memory was 40.7MB in the beginning and 149.3MB in the end (delta: -108.7MB). Peak memory consumption was 156.2MB. Max. memory is 16.1GB. * Witness Printer took 74.75ms. Allocated memory is still 337.6MB. Free memory was 149.3MB in the beginning and 145.2MB 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.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.9s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 562 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 487 mSDsluCounter, 1246 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1105 mSDsCounter, 222 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1477 IncrementalHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 222 mSolverCounterUnsat, 141 mSDtfsCounter, 1477 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 935 SyntacticMatches, 55 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 933 NumberOfCodeBlocks, 927 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1362 ConstructedInterpolants, 0 QuantifiedInterpolants, 4067 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1491 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 31 InterpolantComputations, 1 PerfectInterpolantSequences, 1646/3630 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == (\old(n) + \old(m))) RESULT: Ultimate proved your program to be correct! [2024-09-12 16:31:31,746 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