./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_5-1.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 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:13:03,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:13:03,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 15:13:03,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:13:03,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:13:03,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:13:03,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:13:03,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:13:03,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:13:03,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:13:03,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 15:13:03,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 15:13:03,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:13:03,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:13:03,510 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:13:03,510 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:13:03,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:13:03,511 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:13:03,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:13:03,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:13:03,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:13:03,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:13:03,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:13:03,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:13:03,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:13:03,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:13:03,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:13:03,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:13:03,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:13:03,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:13:03,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:13:03,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:13:03,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:13:03,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 15:13:03,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 15:13:03,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 15:13:03,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 15:13:03,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 15:13:03,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 15:13:03,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 15:13:03,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 15:13:03,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 15:13:03,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 15:13:03,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:13:03,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:13:03,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:13:03,825 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:13:03,826 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:13:03,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-10-15 15:13:05,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:13:05,466 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:13:05,468 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-10-15 15:13:05,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/242c76290/feb7f5312951461f8ee9c58673ae0a09/FLAG85d5920f8 [2024-10-15 15:13:05,499 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/242c76290/feb7f5312951461f8ee9c58673ae0a09 [2024-10-15 15:13:05,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:13:05,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 15:13:05,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:13:05,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:13:05,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:13:05,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6c50b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05, skipping insertion in model container [2024-10-15 15:13:05,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,536 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:13:05,722 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2024-10-15 15:13:05,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:13:05,738 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 15:13:05,750 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2024-10-15 15:13:05,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:13:05,770 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:13:05,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05 WrapperNode [2024-10-15 15:13:05,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:13:05,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:13:05,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:13:05,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:13:05,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,790 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:13:05,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:13:05,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:13:05,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:13:05,792 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:13:05,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,818 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]. [2024-10-15 15:13:05,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:13:05,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:13:05,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:13:05,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:13:05,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (1/1) ... [2024-10-15 15:13:05,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:13:05,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:05,862 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) [2024-10-15 15:13:05,864 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 [2024-10-15 15:13:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:13:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:13:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:13:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:13:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:13:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:13:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:13:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 15:13:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-10-15 15:13:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-10-15 15:13:05,971 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:13:05,974 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:13:06,092 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-15 15:13:06,092 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:13:06,121 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:13:06,121 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 15:13:06,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:13:06 BoogieIcfgContainer [2024-10-15 15:13:06,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:13:06,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 15:13:06,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 15:13:06,129 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 15:13:06,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:13:05" (1/3) ... [2024-10-15 15:13:06,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc48272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:13:06, skipping insertion in model container [2024-10-15 15:13:06,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:13:05" (2/3) ... [2024-10-15 15:13:06,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc48272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:13:06, skipping insertion in model container [2024-10-15 15:13:06,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:13:06" (3/3) ... [2024-10-15 15:13:06,133 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2024-10-15 15:13:06,149 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 15:13:06,150 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 15:13:06,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 15:13:06,220 INFO L333 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;@3e125076, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 15:13:06,220 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 15:13:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 15:13:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-15 15:13:06,232 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:06,233 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:06,233 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:06,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash 358193300, now seen corresponding path program 1 times [2024-10-15 15:13:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:06,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857461326] [2024-10-15 15:13:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:13:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857461326] [2024-10-15 15:13:06,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857461326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:13:06,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:13:06,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:13:06,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534731044] [2024-10-15 15:13:06,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:13:06,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:13:06,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:13:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:13:06,599 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:13:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:06,699 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-10-15 15:13:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:13:06,702 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 [2024-10-15 15:13:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:06,716 INFO L225 Difference]: With dead ends: 35 [2024-10-15 15:13:06,716 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 15:13:06,720 INFO L431 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 [2024-10-15 15:13:06,724 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:06,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:13:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 15:13:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-10-15 15:13:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-15 15:13:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-10-15 15:13:06,767 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2024-10-15 15:13:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:06,768 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-10-15 15:13:06,768 INFO L472 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) [2024-10-15 15:13:06,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-10-15 15:13:06,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-15 15:13:06,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:06,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:06,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 15:13:06,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:06,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1069801351, now seen corresponding path program 1 times [2024-10-15 15:13:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:06,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097643715] [2024-10-15 15:13:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 15:13:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097643715] [2024-10-15 15:13:06,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097643715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 15:13:06,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 15:13:06,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 15:13:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004060024] [2024-10-15 15:13:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 15:13:06,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 15:13:06,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:06,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 15:13:06,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 15:13:06,922 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:13:07,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:07,002 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-10-15 15:13:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 15:13:07,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-10-15 15:13:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:07,004 INFO L225 Difference]: With dead ends: 27 [2024-10-15 15:13:07,004 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 15:13:07,004 INFO L431 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 [2024-10-15 15:13:07,007 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:07,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:13:07,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 15:13:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-10-15 15:13:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-15 15:13:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-10-15 15:13:07,022 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2024-10-15 15:13:07,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:07,023 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-10-15 15:13:07,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 15:13:07,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:07,025 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-10-15 15:13:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-15 15:13:07,026 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:07,026 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:07,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 15:13:07,026 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:07,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash -648535868, now seen corresponding path program 1 times [2024-10-15 15:13:07,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:07,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44941289] [2024-10-15 15:13:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:07,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 15:13:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:13:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44941289] [2024-10-15 15:13:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44941289] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:07,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000348293] [2024-10-15 15:13:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:07,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:07,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:07,219 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) [2024-10-15 15:13:07,221 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 15:13:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:07,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 15:13:07,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 15:13:07,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 15:13:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000348293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:07,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:07,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-10-15 15:13:07,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631296956] [2024-10-15 15:13:07,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:07,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 15:13:07,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:07,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 15:13:07,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-15 15:13:07,672 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-10-15 15:13:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:07,771 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-10-15 15:13:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 15:13:07,772 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-10-15 15:13:07,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:07,773 INFO L225 Difference]: With dead ends: 38 [2024-10-15 15:13:07,773 INFO L226 Difference]: Without dead ends: 23 [2024-10-15 15:13:07,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-15 15:13:07,775 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:07,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:13:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-15 15:13:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-15 15:13:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-15 15:13:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-10-15 15:13:07,784 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2024-10-15 15:13:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:07,784 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-10-15 15:13:07,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-10-15 15:13:07,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-10-15 15:13:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-15 15:13:07,786 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:07,787 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:07,805 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:07,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:07,988 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:07,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1169471199, now seen corresponding path program 1 times [2024-10-15 15:13:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140450403] [2024-10-15 15:13:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 15:13:08,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140450403] [2024-10-15 15:13:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140450403] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:08,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924778640] [2024-10-15 15:13:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:08,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:08,193 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) [2024-10-15 15:13:08,194 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 15:13:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 15:13:08,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 15:13:08,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:08,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 15:13:08,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924778640] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:08,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:08,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-10-15 15:13:08,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644866037] [2024-10-15 15:13:08,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:08,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 15:13:08,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 15:13:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-15 15:13:08,470 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 15:13:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:08,604 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-10-15 15:13:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 15:13:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-10-15 15:13:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:08,606 INFO L225 Difference]: With dead ends: 41 [2024-10-15 15:13:08,607 INFO L226 Difference]: Without dead ends: 37 [2024-10-15 15:13:08,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-15 15:13:08,608 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:08,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 83 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:13:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-15 15:13:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-15 15:13:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2024-10-15 15:13:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-10-15 15:13:08,625 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2024-10-15 15:13:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:08,626 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-10-15 15:13:08,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 15:13:08,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-10-15 15:13:08,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-15 15:13:08,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:08,628 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:08,645 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 15:13:08,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:08,830 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:08,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 413055705, now seen corresponding path program 2 times [2024-10-15 15:13:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:08,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186823282] [2024-10-15 15:13:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:08,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:08,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:09,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-15 15:13:09,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186823282] [2024-10-15 15:13:09,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186823282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75465142] [2024-10-15 15:13:09,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 15:13:09,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:09,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:09,022 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) [2024-10-15 15:13:09,023 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 15:13:09,066 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 15:13:09,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:09,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:13:09,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-15 15:13:09,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-15 15:13:09,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75465142] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:09,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:09,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2024-10-15 15:13:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875934939] [2024-10-15 15:13:09,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:09,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 15:13:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 15:13:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-10-15 15:13:09,557 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-10-15 15:13:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:09,757 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2024-10-15 15:13:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 15:13:09,758 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 40 [2024-10-15 15:13:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:09,759 INFO L225 Difference]: With dead ends: 72 [2024-10-15 15:13:09,759 INFO L226 Difference]: Without dead ends: 41 [2024-10-15 15:13:09,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-10-15 15:13:09,761 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:09,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 91 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:13:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-15 15:13:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-10-15 15:13:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-15 15:13:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-10-15 15:13:09,775 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2024-10-15 15:13:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:09,776 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-10-15 15:13:09,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-10-15 15:13:09,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-10-15 15:13:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-15 15:13:09,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:09,780 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:09,798 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 15:13:09,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:09,981 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:09,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash -926093039, now seen corresponding path program 3 times [2024-10-15 15:13:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465930703] [2024-10-15 15:13:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:09,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 15:13:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465930703] [2024-10-15 15:13:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465930703] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:10,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495879235] [2024-10-15 15:13:10,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 15:13:10,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:10,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:10,298 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) [2024-10-15 15:13:10,299 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 15:13:10,345 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-15 15:13:10,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:10,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 15:13:10,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-10-15 15:13:10,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-15 15:13:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495879235] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:10,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:10,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 15 [2024-10-15 15:13:10,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436591965] [2024-10-15 15:13:10,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:10,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 15:13:10,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 15:13:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-10-15 15:13:10,729 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2024-10-15 15:13:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:10,887 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2024-10-15 15:13:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 15:13:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 68 [2024-10-15 15:13:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:10,891 INFO L225 Difference]: With dead ends: 83 [2024-10-15 15:13:10,891 INFO L226 Difference]: Without dead ends: 79 [2024-10-15 15:13:10,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-10-15 15:13:10,893 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:10,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 111 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 15:13:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-10-15 15:13:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-10-15 15:13:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 46 states have internal predecessors, (54), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (32), 18 states have call predecessors, (32), 14 states have call successors, (32) [2024-10-15 15:13:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-10-15 15:13:10,917 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 68 [2024-10-15 15:13:10,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:10,918 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-10-15 15:13:10,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2024-10-15 15:13:10,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-10-15 15:13:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-15 15:13:10,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:10,927 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:10,944 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 15:13:11,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:11,128 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:11,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash -257182465, now seen corresponding path program 4 times [2024-10-15 15:13:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476918596] [2024-10-15 15:13:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:11,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:11,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:12,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-10-15 15:13:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476918596] [2024-10-15 15:13:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476918596] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426193224] [2024-10-15 15:13:12,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 15:13:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:12,014 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) [2024-10-15 15:13:12,016 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 15:13:12,095 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 15:13:12,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:12,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-15 15:13:12,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-10-15 15:13:12,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-10-15 15:13:12,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426193224] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:12,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:12,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-10-15 15:13:12,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952471063] [2024-10-15 15:13:12,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:12,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 15:13:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:12,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 15:13:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-10-15 15:13:12,709 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-15 15:13:12,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:12,918 INFO L93 Difference]: Finished difference Result 135 states and 223 transitions. [2024-10-15 15:13:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 15:13:12,919 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2024-10-15 15:13:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:12,923 INFO L225 Difference]: With dead ends: 135 [2024-10-15 15:13:12,924 INFO L226 Difference]: Without dead ends: 131 [2024-10-15 15:13:12,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-10-15 15:13:12,925 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:12,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 504 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:13:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-15 15:13:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2024-10-15 15:13:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 52 states have internal predecessors, (60), 17 states have call successors, (17), 8 states have call predecessors, (17), 12 states have return successors, (46), 22 states have call predecessors, (46), 16 states have call successors, (46) [2024-10-15 15:13:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 123 transitions. [2024-10-15 15:13:12,966 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 123 transitions. Word has length 109 [2024-10-15 15:13:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:12,966 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 123 transitions. [2024-10-15 15:13:12,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-15 15:13:12,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 123 transitions. [2024-10-15 15:13:12,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-15 15:13:12,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:12,969 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:12,986 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 15:13:13,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 15:13:13,171 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:13,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash 994115606, now seen corresponding path program 5 times [2024-10-15 15:13:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:13,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537834245] [2024-10-15 15:13:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:13,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 198 proven. 308 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-10-15 15:13:13,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537834245] [2024-10-15 15:13:13,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537834245] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:13,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294782361] [2024-10-15 15:13:13,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 15:13:13,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:13,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:13,729 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) [2024-10-15 15:13:13,730 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 15:13:13,800 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-15 15:13:13,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:13,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-15 15:13:13,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 187 proven. 336 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-10-15 15:13:13,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 189 proven. 354 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-10-15 15:13:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294782361] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:15,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:15,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 17] total 29 [2024-10-15 15:13:15,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077671412] [2024-10-15 15:13:15,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:15,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-15 15:13:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:15,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-15 15:13:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2024-10-15 15:13:15,084 INFO L87 Difference]: Start difference. First operand 83 states and 123 transitions. Second operand has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 21 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (35), 17 states have call predecessors, (35), 21 states have call successors, (35) [2024-10-15 15:13:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:15,431 INFO L93 Difference]: Finished difference Result 154 states and 259 transitions. [2024-10-15 15:13:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 15:13:15,433 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 21 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (35), 17 states have call predecessors, (35), 21 states have call successors, (35) Word has length 136 [2024-10-15 15:13:15,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:15,434 INFO L225 Difference]: With dead ends: 154 [2024-10-15 15:13:15,436 INFO L226 Difference]: Without dead ends: 80 [2024-10-15 15:13:15,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 295 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=431, Invalid=1209, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 15:13:15,442 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:15,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 187 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:13:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-15 15:13:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2024-10-15 15:13:15,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 43 states have internal predecessors, (47), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (25), 14 states have call predecessors, (25), 11 states have call successors, (25) [2024-10-15 15:13:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2024-10-15 15:13:15,453 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 136 [2024-10-15 15:13:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:15,453 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2024-10-15 15:13:15,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 21 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (35), 17 states have call predecessors, (35), 21 states have call successors, (35) [2024-10-15 15:13:15,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:15,454 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2024-10-15 15:13:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-15 15:13:15,456 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 15:13:15,456 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 15:13:15,472 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 15:13:15,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:15,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 15:13:15,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1689956084, now seen corresponding path program 6 times [2024-10-15 15:13:15,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 15:13:15,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908727334] [2024-10-15 15:13:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 15:13:15,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 15:13:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 15:13:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-15 15:13:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 15:13:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:15,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 15:13:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 15:13:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 15:13:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 15:13:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 15:13:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 15:13:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 230 proven. 170 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2024-10-15 15:13:16,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 15:13:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908727334] [2024-10-15 15:13:16,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908727334] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 15:13:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032922643] [2024-10-15 15:13:16,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 15:13:16,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:16,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 15:13:16,049 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) [2024-10-15 15:13:16,051 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 15:13:16,139 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-10-15 15:13:16,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 15:13:16,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 15:13:16,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 15:13:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 131 proven. 302 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-10-15 15:13:16,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 15:13:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 131 proven. 337 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2024-10-15 15:13:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032922643] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 15:13:17,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 15:13:17,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 15] total 23 [2024-10-15 15:13:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666249952] [2024-10-15 15:13:17,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 15:13:17,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 15:13:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 15:13:17,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 15:13:17,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-10-15 15:13:17,453 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-10-15 15:13:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 15:13:17,696 INFO L93 Difference]: Finished difference Result 130 states and 184 transitions. [2024-10-15 15:13:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 15:13:17,696 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 136 [2024-10-15 15:13:17,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 15:13:17,697 INFO L225 Difference]: With dead ends: 130 [2024-10-15 15:13:17,697 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 15:13:17,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 296 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2024-10-15 15:13:17,698 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 15:13:17,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 150 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 15:13:17,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 15:13:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 15:13:17,701 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) [2024-10-15 15:13:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 15:13:17,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-10-15 15:13:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 15:13:17,701 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 15:13:17,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-10-15 15:13:17,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 15:13:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 15:13:17,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 15:13:17,705 INFO L782 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 15:13:17,722 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 15:13:17,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 15:13:17,913 INFO L407 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2024-10-15 15:13:17,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 15:13:19,098 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 15:13:19,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:13:19 BoogieIcfgContainer [2024-10-15 15:13:19,118 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 15:13:19,119 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 15:13:19,119 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 15:13:19,119 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 15:13:19,120 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:13:06" (3/4) ... [2024-10-15 15:13:19,121 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 15:13:19,172 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 15:13:19,172 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 15:13:19,172 INFO L158 Benchmark]: Toolchain (without parser) took 13668.31ms. Allocated memory was 153.1MB in the beginning and 255.9MB in the end (delta: 102.8MB). Free memory was 115.8MB in the beginning and 168.7MB in the end (delta: -52.9MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2024-10-15 15:13:19,173 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 153.1MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:13:19,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.34ms. Allocated memory is still 153.1MB. Free memory was 115.8MB in the beginning and 103.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 15:13:19,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.89ms. Allocated memory is still 153.1MB. Free memory was 103.7MB in the beginning and 102.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:19,174 INFO L158 Benchmark]: Boogie Preprocessor took 33.83ms. Allocated memory is still 153.1MB. Free memory was 102.7MB in the beginning and 101.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:19,174 INFO L158 Benchmark]: RCFGBuilder took 294.81ms. Allocated memory is still 153.1MB. Free memory was 101.1MB in the beginning and 89.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 15:13:19,174 INFO L158 Benchmark]: TraceAbstraction took 12993.49ms. Allocated memory was 153.1MB in the beginning and 255.9MB in the end (delta: 102.8MB). Free memory was 89.1MB in the beginning and 170.8MB in the end (delta: -81.7MB). Peak memory consumption was 121.8MB. Max. memory is 16.1GB. [2024-10-15 15:13:19,175 INFO L158 Benchmark]: Witness Printer took 53.04ms. Allocated memory is still 255.9MB. Free memory was 170.8MB in the beginning and 168.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:13:19,176 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 153.1MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.34ms. Allocated memory is still 153.1MB. Free memory was 115.8MB in the beginning and 103.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.89ms. Allocated memory is still 153.1MB. Free memory was 103.7MB in the beginning and 102.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.83ms. Allocated memory is still 153.1MB. Free memory was 102.7MB in the beginning and 101.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 294.81ms. Allocated memory is still 153.1MB. Free memory was 101.1MB in the beginning and 89.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12993.49ms. Allocated memory was 153.1MB in the beginning and 255.9MB in the end (delta: 102.8MB). Free memory was 89.1MB in the beginning and 170.8MB in the end (delta: -81.7MB). Peak memory consumption was 121.8MB. Max. memory is 16.1GB. * Witness Printer took 53.04ms. Allocated memory is still 255.9MB. Free memory was 170.8MB in the beginning and 168.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.7s, OverallIterations: 9, TraceHistogramMax: 19, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 239 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200 mSDsluCounter, 1270 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1070 mSDsCounter, 190 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1406 IncrementalHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 190 mSolverCounterUnsat, 200 mSDtfsCounter, 1406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 1209 SyntacticMatches, 26 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=7, InterpolantAutomatonStates: 107, 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, 9 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1111 NumberOfCodeBlocks, 1051 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1630 ConstructedInterpolants, 0 QuantifiedInterpolants, 3342 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1186 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 5494/8091 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Ensures: (((((((((\result == 3) && (4 == n)) || ((2 == n) && (\result == 1))) || (n < 1)) || ((3 == n) && (\result == 2))) || (5 < n)) || ((\result == 1) && (1 == n))) || ((\result == 5) && (5 == n))) && ((0 < n) || (\result == 0))) RESULT: Ultimate proved your program to be correct! [2024-10-15 15:13:19,206 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE