./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 09:48:25,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 09:48:25,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 09:48:25,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 09:48:25,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 09:48:25,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 09:48:25,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 09:48:25,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 09:48:25,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 09:48:25,879 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 09:48:25,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 09:48:25,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 09:48:25,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 09:48:25,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 09:48:25,881 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 09:48:25,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 09:48:25,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 09:48:25,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 09:48:25,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 09:48:25,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 09:48:25,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 09:48:25,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 09:48:25,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 09:48:25,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 09:48:25,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 09:48:25,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 09:48:25,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 09:48:25,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 09:48:25,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 09:48:25,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 09:48:25,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 09:48:25,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 09:48:25,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:48:25,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 09:48:25,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 09:48:25,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 09:48:25,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 09:48:25,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 09:48:25,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 09:48:25,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 09:48:25,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 09:48:25,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 09:48:25,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 09:48:26,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 09:48:26,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 09:48:26,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 09:48:26,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 09:48:26,078 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 09:48:26,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-09-13 09:48:27,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 09:48:27,416 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 09:48:27,417 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-09-13 09:48:27,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/df475f74f/91486f32ba294ea0a9480d2c9bf89f6d/FLAG7b0fd4439 [2024-09-13 09:48:27,431 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/df475f74f/91486f32ba294ea0a9480d2c9bf89f6d [2024-09-13 09:48:27,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 09:48:27,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 09:48:27,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 09:48:27,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 09:48:27,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 09:48:27,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332ba754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27, skipping insertion in model container [2024-09-13 09:48:27,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,455 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 09:48:27,569 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2024-09-13 09:48:27,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:48:27,579 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 09:48:27,589 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2024-09-13 09:48:27,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 09:48:27,601 INFO L204 MainTranslator]: Completed translation [2024-09-13 09:48:27,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27 WrapperNode [2024-09-13 09:48:27,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 09:48:27,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 09:48:27,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 09:48:27,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 09:48:27,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,616 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 09:48:27,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 09:48:27,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 09:48:27,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 09:48:27,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 09:48:27,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,633 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-13 09:48:27,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 09:48:27,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 09:48:27,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 09:48:27,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 09:48:27,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (1/1) ... [2024-09-13 09:48:27,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 09:48:27,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:27,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 09:48:27,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 09:48:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 09:48:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 09:48:27,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 09:48:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 09:48:27,707 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-13 09:48:27,707 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-13 09:48:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-13 09:48:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-13 09:48:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 09:48:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 09:48:27,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 09:48:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 09:48:27,762 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 09:48:27,766 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 09:48:27,873 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-13 09:48:27,873 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 09:48:27,889 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 09:48:27,890 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 09:48:27,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:48:27 BoogieIcfgContainer [2024-09-13 09:48:27,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 09:48:27,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 09:48:27,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 09:48:27,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 09:48:27,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 09:48:27" (1/3) ... [2024-09-13 09:48:27,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257c1bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:48:27, skipping insertion in model container [2024-09-13 09:48:27,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 09:48:27" (2/3) ... [2024-09-13 09:48:27,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257c1bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 09:48:27, skipping insertion in model container [2024-09-13 09:48:27,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:48:27" (3/3) ... [2024-09-13 09:48:27,900 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-09-13 09:48:27,915 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 09:48:27,915 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 09:48:27,957 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 09:48:27,964 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b579d5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 09:48:27,964 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 09:48:27,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 09:48:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 09:48:27,976 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:27,977 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:27,977 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:27,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-13 09:48:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:27,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654085398] [2024-09-13 09:48:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:48:28,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:28,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654085398] [2024-09-13 09:48:28,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654085398] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:48:28,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:48:28,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:48:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612695336] [2024-09-13 09:48:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:48:28,233 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:48:28,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:48:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:48:28,256 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 09:48:28,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:28,348 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-13 09:48:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:48:28,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-13 09:48:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:28,357 INFO L225 Difference]: With dead ends: 44 [2024-09-13 09:48:28,357 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 09:48:28,359 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:48:28,361 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:28,362 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:48:28,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 09:48:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 09:48:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-13 09:48:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-13 09:48:28,394 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-13 09:48:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:28,395 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-13 09:48:28,395 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 09:48:28,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-13 09:48:28,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 09:48:28,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:28,396 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:28,396 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 09:48:28,396 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:28,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-13 09:48:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900012130] [2024-09-13 09:48:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 09:48:28,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:28,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900012130] [2024-09-13 09:48:28,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900012130] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 09:48:28,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 09:48:28,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 09:48:28,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167721566] [2024-09-13 09:48:28,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 09:48:28,503 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 09:48:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 09:48:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:48:28,506 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 09:48:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:28,559 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-13 09:48:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 09:48:28,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-13 09:48:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:28,560 INFO L225 Difference]: With dead ends: 36 [2024-09-13 09:48:28,560 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 09:48:28,561 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 09:48:28,561 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:28,562 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 09:48:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 09:48:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 09:48:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-13 09:48:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-13 09:48:28,584 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-13 09:48:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:28,587 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-13 09:48:28,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 09:48:28,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-13 09:48:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 09:48:28,589 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:28,589 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:28,590 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 09:48:28,590 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:28,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-13 09:48:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:28,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945305788] [2024-09-13 09:48:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-13 09:48:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:28,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:28,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945305788] [2024-09-13 09:48:28,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945305788] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:28,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504944105] [2024-09-13 09:48:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:28,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:28,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:28,782 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 09:48:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:28,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 09:48:28,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:28,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504944105] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:29,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-13 09:48:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567652408] [2024-09-13 09:48:29,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:29,065 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 09:48:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 09:48:29,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-13 09:48:29,065 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-13 09:48:29,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:29,176 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-13 09:48:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 09:48:29,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-13 09:48:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:29,177 INFO L225 Difference]: With dead ends: 58 [2024-09-13 09:48:29,177 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 09:48:29,178 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-13 09:48:29,179 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:29,179 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 160 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:48:29,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 09:48:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-13 09:48:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 09:48:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-13 09:48:29,188 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-13 09:48:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:29,188 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-13 09:48:29,188 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-13 09:48:29,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-13 09:48:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 09:48:29,189 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:29,189 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:29,211 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 09:48:29,394 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:29,395 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:29,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-13 09:48:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:29,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398089132] [2024-09-13 09:48:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:29,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:29,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:29,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:29,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:29,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:29,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:29,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398089132] [2024-09-13 09:48:29,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398089132] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:29,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247922229] [2024-09-13 09:48:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:29,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:29,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:29,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:29,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 09:48:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:29,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 09:48:29,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:29,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 09:48:29,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247922229] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:29,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:29,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-13 09:48:29,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755590460] [2024-09-13 09:48:29,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:29,796 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 09:48:29,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 09:48:29,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-13 09:48:29,797 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 09:48:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:30,010 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-13 09:48:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 09:48:30,011 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-13 09:48:30,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:30,013 INFO L225 Difference]: With dead ends: 56 [2024-09-13 09:48:30,013 INFO L226 Difference]: Without dead ends: 52 [2024-09-13 09:48:30,013 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-09-13 09:48:30,014 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:30,015 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 182 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-13 09:48:30,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-13 09:48:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-13 09:48:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-13 09:48:30,028 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-13 09:48:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:30,028 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-13 09:48:30,028 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 09:48:30,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-13 09:48:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 09:48:30,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:30,030 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:30,043 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 09:48:30,234 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:30,235 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:30,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:30,235 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-13 09:48:30,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:30,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14585533] [2024-09-13 09:48:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-13 09:48:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 09:48:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:48:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14585533] [2024-09-13 09:48:30,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14585533] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937589848] [2024-09-13 09:48:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:30,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:30,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:30,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:30,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 09:48:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:30,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:48:30,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 09:48:30,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:48:30,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937589848] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:30,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:30,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-13 09:48:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848443741] [2024-09-13 09:48:30,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:30,758 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 09:48:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 09:48:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-13 09:48:30,759 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-13 09:48:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:30,952 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-13 09:48:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 09:48:30,952 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) Word has length 39 [2024-09-13 09:48:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:30,954 INFO L225 Difference]: With dead ends: 112 [2024-09-13 09:48:30,954 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 09:48:30,955 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-09-13 09:48:30,955 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:30,956 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 200 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:48:30,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 09:48:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-13 09:48:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2024-09-13 09:48:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-13 09:48:30,965 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-13 09:48:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:30,965 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-13 09:48:30,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (14), 4 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-13 09:48:30,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-13 09:48:30,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 09:48:30,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:30,970 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:30,983 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 09:48:31,170 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:31,171 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:31,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-13 09:48:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734533269] [2024-09-13 09:48:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:31,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-09-13 09:48:31,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:31,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734533269] [2024-09-13 09:48:31,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734533269] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:31,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609581980] [2024-09-13 09:48:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:31,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:31,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:31,344 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 09:48:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:31,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:48:31,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-13 09:48:31,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 09:48:31,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609581980] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:31,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-13 09:48:31,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157525010] [2024-09-13 09:48:31,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:31,684 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 09:48:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:31,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 09:48:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-13 09:48:31,687 INFO L87 Difference]: Start difference. First operand 66 states and 95 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-13 09:48:31,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:31,947 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-13 09:48:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 09:48:31,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) Word has length 40 [2024-09-13 09:48:31,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:31,950 INFO L225 Difference]: With dead ends: 182 [2024-09-13 09:48:31,950 INFO L226 Difference]: Without dead ends: 122 [2024-09-13 09:48:31,951 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-09-13 09:48:31,953 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:31,953 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 343 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-13 09:48:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-13 09:48:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.21875) internal successors, (78), 67 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (64), 26 states have call predecessors, (64), 22 states have call successors, (64) [2024-09-13 09:48:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-13 09:48:31,975 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-13 09:48:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:31,975 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-13 09:48:31,976 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (14), 7 states have call predecessors, (14), 11 states have call successors, (14) [2024-09-13 09:48:31,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-13 09:48:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-13 09:48:31,978 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:31,978 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:31,990 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 09:48:32,182 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:32,183 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:32,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-13 09:48:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:32,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32777176] [2024-09-13 09:48:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:32,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 09:48:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-09-13 09:48:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32777176] [2024-09-13 09:48:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32777176] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292106049] [2024-09-13 09:48:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:32,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:32,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:32,359 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 09:48:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:32,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:48:32,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-13 09:48:32,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-13 09:48:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292106049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:32,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:32,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2024-09-13 09:48:32,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879629788] [2024-09-13 09:48:32,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:32,856 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 09:48:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:32,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 09:48:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-09-13 09:48:32,856 INFO L87 Difference]: Start difference. First operand 103 states and 165 transitions. Second operand has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-13 09:48:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:33,153 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-13 09:48:33,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 09:48:33,153 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) Word has length 54 [2024-09-13 09:48:33,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:33,155 INFO L225 Difference]: With dead ends: 252 [2024-09-13 09:48:33,157 INFO L226 Difference]: Without dead ends: 155 [2024-09-13 09:48:33,159 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-09-13 09:48:33,159 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:33,159 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 348 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-13 09:48:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-13 09:48:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 26 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (67), 28 states have call predecessors, (67), 25 states have call successors, (67) [2024-09-13 09:48:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-13 09:48:33,211 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-13 09:48:33,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:33,211 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-13 09:48:33,212 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 19 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) [2024-09-13 09:48:33,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-13 09:48:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-13 09:48:33,216 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:33,216 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:33,228 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 09:48:33,420 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 09:48:33,421 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:33,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2073072172, now seen corresponding path program 1 times [2024-09-13 09:48:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656971268] [2024-09-13 09:48:33,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 09:48:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-09-13 09:48:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656971268] [2024-09-13 09:48:33,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656971268] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128945542] [2024-09-13 09:48:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:33,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:33,677 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 09:48:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:33,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:48:33,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-13 09:48:33,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 33 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-09-13 09:48:34,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128945542] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:34,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:34,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2024-09-13 09:48:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571180880] [2024-09-13 09:48:34,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:34,056 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 09:48:34,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:34,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 09:48:34,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-09-13 09:48:34,058 INFO L87 Difference]: Start difference. First operand 112 states and 180 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 11 states have call predecessors, (22), 12 states have call successors, (22) [2024-09-13 09:48:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:34,332 INFO L93 Difference]: Finished difference Result 254 states and 496 transitions. [2024-09-13 09:48:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 09:48:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 11 states have call predecessors, (22), 12 states have call successors, (22) Word has length 82 [2024-09-13 09:48:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:34,340 INFO L225 Difference]: With dead ends: 254 [2024-09-13 09:48:34,340 INFO L226 Difference]: Without dead ends: 137 [2024-09-13 09:48:34,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-09-13 09:48:34,342 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 43 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:34,342 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 262 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:34,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-13 09:48:34,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 114. [2024-09-13 09:48:34,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 75 states have internal predecessors, (91), 25 states have call successors, (25), 13 states have call predecessors, (25), 14 states have return successors, (61), 25 states have call predecessors, (61), 24 states have call successors, (61) [2024-09-13 09:48:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 177 transitions. [2024-09-13 09:48:34,358 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 177 transitions. Word has length 82 [2024-09-13 09:48:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:34,359 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 177 transitions. [2024-09-13 09:48:34,359 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 11 states have call predecessors, (22), 12 states have call successors, (22) [2024-09-13 09:48:34,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 177 transitions. [2024-09-13 09:48:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-13 09:48:34,361 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:34,361 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 13, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:34,373 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 09:48:34,561 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:34,562 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:34,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 146808360, now seen corresponding path program 1 times [2024-09-13 09:48:34,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:34,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047053092] [2024-09-13 09:48:34,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:34,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-13 09:48:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 183 proven. 290 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-13 09:48:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:35,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047053092] [2024-09-13 09:48:35,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047053092] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:35,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972620191] [2024-09-13 09:48:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:35,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:35,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:35,157 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:35,158 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 09:48:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:35,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 09:48:35,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 92 proven. 230 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2024-09-13 09:48:35,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 92 proven. 238 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-09-13 09:48:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972620191] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:36,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:36,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 13] total 32 [2024-09-13 09:48:36,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893019974] [2024-09-13 09:48:36,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:36,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-13 09:48:36,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-13 09:48:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-09-13 09:48:36,142 INFO L87 Difference]: Start difference. First operand 114 states and 177 transitions. Second operand has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 32 states have internal predecessors, (90), 20 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (34), 20 states have call predecessors, (34), 20 states have call successors, (34) [2024-09-13 09:48:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:36,703 INFO L93 Difference]: Finished difference Result 244 states and 453 transitions. [2024-09-13 09:48:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-13 09:48:36,704 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 32 states have internal predecessors, (90), 20 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (34), 20 states have call predecessors, (34), 20 states have call successors, (34) Word has length 205 [2024-09-13 09:48:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:36,705 INFO L225 Difference]: With dead ends: 244 [2024-09-13 09:48:36,705 INFO L226 Difference]: Without dead ends: 116 [2024-09-13 09:48:36,707 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 453 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1987, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 09:48:36,708 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:36,708 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 482 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 09:48:36,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-13 09:48:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-09-13 09:48:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 19 states have call successors, (19), 14 states have call predecessors, (19), 12 states have return successors, (35), 17 states have call predecessors, (35), 18 states have call successors, (35) [2024-09-13 09:48:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2024-09-13 09:48:36,720 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 205 [2024-09-13 09:48:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:36,721 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2024-09-13 09:48:36,721 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.903225806451613) internal successors, (90), 32 states have internal predecessors, (90), 20 states have call successors, (28), 1 states have call predecessors, (28), 14 states have return successors, (34), 20 states have call predecessors, (34), 20 states have call successors, (34) [2024-09-13 09:48:36,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2024-09-13 09:48:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-13 09:48:36,723 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:36,723 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:36,736 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 09:48:36,926 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:36,927 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:36,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1761300740, now seen corresponding path program 2 times [2024-09-13 09:48:36,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:36,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704352185] [2024-09-13 09:48:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:36,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:36,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 79 proven. 22 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-13 09:48:37,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:37,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704352185] [2024-09-13 09:48:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704352185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187909132] [2024-09-13 09:48:37,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 09:48:37,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:37,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:37,156 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:37,158 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 09:48:37,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 09:48:37,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:48:37,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 09:48:37,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-13 09:48:37,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-13 09:48:37,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187909132] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:37,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:37,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 19 [2024-09-13 09:48:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660361800] [2024-09-13 09:48:37,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:37,524 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 09:48:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 09:48:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-09-13 09:48:37,525 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-09-13 09:48:37,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:37,689 INFO L93 Difference]: Finished difference Result 194 states and 277 transitions. [2024-09-13 09:48:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 09:48:37,690 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) Word has length 95 [2024-09-13 09:48:37,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:37,691 INFO L225 Difference]: With dead ends: 194 [2024-09-13 09:48:37,691 INFO L226 Difference]: Without dead ends: 109 [2024-09-13 09:48:37,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-09-13 09:48:37,692 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:37,693 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 229 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:48:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-13 09:48:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-09-13 09:48:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 69 states have internal predecessors, (86), 20 states have call successors, (20), 15 states have call predecessors, (20), 12 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2024-09-13 09:48:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2024-09-13 09:48:37,702 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 95 [2024-09-13 09:48:37,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:37,702 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2024-09-13 09:48:37,702 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 11 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-09-13 09:48:37,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:37,702 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2024-09-13 09:48:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-13 09:48:37,703 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:37,703 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:37,716 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 09:48:37,904 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:37,904 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:37,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash 719095213, now seen corresponding path program 3 times [2024-09-13 09:48:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:37,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704790315] [2024-09-13 09:48:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:37,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-13 09:48:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704790315] [2024-09-13 09:48:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704790315] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669071877] [2024-09-13 09:48:38,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 09:48:38,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:38,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:38,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:38,560 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-13 09:48:38,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-13 09:48:38,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:48:38,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-13 09:48:38,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-13 09:48:38,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-09-13 09:48:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669071877] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:39,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-09-13 09:48:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925318126] [2024-09-13 09:48:39,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:39,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 09:48:39,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:39,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 09:48:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-13 09:48:39,062 INFO L87 Difference]: Start difference. First operand 103 states and 139 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-13 09:48:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:39,217 INFO L93 Difference]: Finished difference Result 137 states and 193 transitions. [2024-09-13 09:48:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 09:48:39,220 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) Word has length 109 [2024-09-13 09:48:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:39,222 INFO L225 Difference]: With dead ends: 137 [2024-09-13 09:48:39,222 INFO L226 Difference]: Without dead ends: 133 [2024-09-13 09:48:39,222 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-13 09:48:39,223 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:39,223 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1012 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 09:48:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-13 09:48:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2024-09-13 09:48:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 82 states have internal predecessors, (99), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (54), 26 states have call predecessors, (54), 22 states have call successors, (54) [2024-09-13 09:48:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2024-09-13 09:48:39,236 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 109 [2024-09-13 09:48:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:39,236 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2024-09-13 09:48:39,236 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (18), 18 states have call predecessors, (18), 5 states have call successors, (18) [2024-09-13 09:48:39,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2024-09-13 09:48:39,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-13 09:48:39,238 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:39,238 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:39,250 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-13 09:48:39,441 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-13 09:48:39,441 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:39,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1579294066, now seen corresponding path program 4 times [2024-09-13 09:48:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:39,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229298857] [2024-09-13 09:48:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-13 09:48:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 58 proven. 98 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-13 09:48:39,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229298857] [2024-09-13 09:48:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229298857] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91270675] [2024-09-13 09:48:39,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 09:48:39,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:39,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:39,674 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:39,675 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-13 09:48:39,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 09:48:39,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:48:39,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 09:48:39,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 55 proven. 61 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-09-13 09:48:39,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 57 proven. 63 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-09-13 09:48:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91270675] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:40,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:40,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 24 [2024-09-13 09:48:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244634296] [2024-09-13 09:48:40,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:40,268 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 09:48:40,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 09:48:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-09-13 09:48:40,270 INFO L87 Difference]: Start difference. First operand 124 states and 176 transitions. Second operand has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 15 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (28), 15 states have call predecessors, (28), 15 states have call successors, (28) [2024-09-13 09:48:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:40,500 INFO L93 Difference]: Finished difference Result 240 states and 354 transitions. [2024-09-13 09:48:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 09:48:40,501 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 15 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (28), 15 states have call predecessors, (28), 15 states have call successors, (28) Word has length 110 [2024-09-13 09:48:40,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:40,502 INFO L225 Difference]: With dead ends: 240 [2024-09-13 09:48:40,502 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 09:48:40,503 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 240 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2024-09-13 09:48:40,504 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:40,504 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 308 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:40,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 09:48:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2024-09-13 09:48:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.205128205128205) internal successors, (94), 77 states have internal predecessors, (94), 22 states have call successors, (22), 15 states have call predecessors, (22), 15 states have return successors, (39), 23 states have call predecessors, (39), 21 states have call successors, (39) [2024-09-13 09:48:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2024-09-13 09:48:40,514 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 110 [2024-09-13 09:48:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:40,514 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2024-09-13 09:48:40,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 24 states have internal predecessors, (77), 15 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (28), 15 states have call predecessors, (28), 15 states have call successors, (28) [2024-09-13 09:48:40,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2024-09-13 09:48:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-13 09:48:40,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:40,516 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:40,528 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-13 09:48:40,716 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-13 09:48:40,717 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:40,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-13 09:48:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:40,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375689846] [2024-09-13 09:48:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 09:48:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-13 09:48:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 61 proven. 94 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-13 09:48:40,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:40,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375689846] [2024-09-13 09:48:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375689846] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716762315] [2024-09-13 09:48:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:40,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:40,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:40,984 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:40,985 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-13 09:48:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:41,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 09:48:41,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 133 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-09-13 09:48:41,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 48 proven. 147 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-09-13 09:48:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716762315] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:42,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:42,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 24 [2024-09-13 09:48:42,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812099473] [2024-09-13 09:48:42,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:42,065 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 09:48:42,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 09:48:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-09-13 09:48:42,067 INFO L87 Difference]: Start difference. First operand 116 states and 155 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 19 states have call successors, (26), 1 states have call predecessors, (26), 9 states have return successors, (32), 10 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-13 09:48:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:42,304 INFO L93 Difference]: Finished difference Result 229 states and 318 transitions. [2024-09-13 09:48:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 09:48:42,305 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 19 states have call successors, (26), 1 states have call predecessors, (26), 9 states have return successors, (32), 10 states have call predecessors, (32), 19 states have call successors, (32) Word has length 123 [2024-09-13 09:48:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:42,306 INFO L225 Difference]: With dead ends: 229 [2024-09-13 09:48:42,306 INFO L226 Difference]: Without dead ends: 84 [2024-09-13 09:48:42,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 265 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2024-09-13 09:48:42,308 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:42,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 485 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:42,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-13 09:48:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-09-13 09:48:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 57 states have internal predecessors, (69), 15 states have call successors, (15), 14 states have call predecessors, (15), 10 states have return successors, (15), 12 states have call predecessors, (15), 14 states have call successors, (15) [2024-09-13 09:48:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2024-09-13 09:48:42,314 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 123 [2024-09-13 09:48:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:42,315 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2024-09-13 09:48:42,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 19 states have call successors, (26), 1 states have call predecessors, (26), 9 states have return successors, (32), 10 states have call predecessors, (32), 19 states have call successors, (32) [2024-09-13 09:48:42,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-09-13 09:48:42,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-13 09:48:42,316 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 09:48:42,316 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:42,328 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-13 09:48:42,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:42,517 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 09:48:42,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:42,517 INFO L85 PathProgramCache]: Analyzing trace with hash -543433254, now seen corresponding path program 5 times [2024-09-13 09:48:42,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 09:48:42,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85937202] [2024-09-13 09:48:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 09:48:42,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 09:48:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 09:48:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 09:48:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 09:48:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 09:48:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 09:48:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 09:48:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 09:48:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 09:48:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 92 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-09-13 09:48:42,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 09:48:42,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85937202] [2024-09-13 09:48:42,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85937202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 09:48:42,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324225775] [2024-09-13 09:48:42,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 09:48:42,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 09:48:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 09:48:42,879 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 09:48:42,880 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-13 09:48:42,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-13 09:48:42,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 09:48:42,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 09:48:42,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 09:48:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 126 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-09-13 09:48:43,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 09:48:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 129 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-09-13 09:48:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324225775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 09:48:43,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 09:48:43,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 15] total 32 [2024-09-13 09:48:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788519593] [2024-09-13 09:48:43,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 09:48:43,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-13 09:48:43,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 09:48:43,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-13 09:48:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2024-09-13 09:48:43,620 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 states have internal predecessors, (93), 21 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (35), 19 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-13 09:48:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 09:48:43,914 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-09-13 09:48:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-13 09:48:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 states have internal predecessors, (93), 21 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (35), 19 states have call predecessors, (35), 21 states have call successors, (35) Word has length 136 [2024-09-13 09:48:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 09:48:43,915 INFO L225 Difference]: With dead ends: 89 [2024-09-13 09:48:43,915 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 09:48:43,916 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 293 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1562, Unknown=0, NotChecked=0, Total=1892 [2024-09-13 09:48:43,917 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 09:48:43,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 313 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 09:48:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 09:48:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 09:48:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 09:48:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 09:48:43,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-09-13 09:48:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 09:48:43,918 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 09:48:43,918 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.0) internal successors, (93), 32 states have internal predecessors, (93), 21 states have call successors, (32), 1 states have call predecessors, (32), 11 states have return successors, (35), 19 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-13 09:48:43,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 09:48:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 09:48:43,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 09:48:43,921 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 09:48:43,936 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-13 09:48:44,125 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-13 09:48:44,128 INFO L408 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 09:48:44,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 09:48:47,803 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 09:48:47,829 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 09:48:47,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 09:48:47 BoogieIcfgContainer [2024-09-13 09:48:47,831 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 09:48:47,831 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 09:48:47,832 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 09:48:47,832 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 09:48:47,832 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 09:48:27" (3/4) ... [2024-09-13 09:48:47,834 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 09:48:47,837 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 09:48:47,837 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 09:48:47,837 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-09-13 09:48:47,837 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-09-13 09:48:47,840 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-13 09:48:47,841 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 09:48:47,841 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 09:48:47,841 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 09:48:47,909 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 09:48:47,909 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 09:48:47,911 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 09:48:47,912 INFO L158 Benchmark]: Toolchain (without parser) took 20477.69ms. Allocated memory was 186.6MB in the beginning and 580.9MB in the end (delta: 394.3MB). Free memory was 119.1MB in the beginning and 468.8MB in the end (delta: -349.7MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2024-09-13 09:48:47,912 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:48:47,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.47ms. Allocated memory is still 186.6MB. Free memory was 119.0MB in the beginning and 107.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 09:48:47,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.42ms. Allocated memory is still 186.6MB. Free memory was 107.8MB in the beginning and 106.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 09:48:47,913 INFO L158 Benchmark]: Boogie Preprocessor took 20.99ms. Allocated memory is still 186.6MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 09:48:47,913 INFO L158 Benchmark]: RCFGBuilder took 252.19ms. Allocated memory is still 186.6MB. Free memory was 105.1MB in the beginning and 148.1MB in the end (delta: -43.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2024-09-13 09:48:47,913 INFO L158 Benchmark]: TraceAbstraction took 19938.06ms. Allocated memory was 186.6MB in the beginning and 580.9MB in the end (delta: 394.3MB). Free memory was 147.4MB in the beginning and 473.0MB in the end (delta: -325.6MB). Peak memory consumption was 274.9MB. Max. memory is 16.1GB. [2024-09-13 09:48:47,913 INFO L158 Benchmark]: Witness Printer took 80.08ms. Allocated memory is still 580.9MB. Free memory was 473.0MB in the beginning and 468.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 09:48:47,915 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.47ms. Allocated memory is still 186.6MB. Free memory was 119.0MB in the beginning and 107.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.42ms. Allocated memory is still 186.6MB. Free memory was 107.8MB in the beginning and 106.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.99ms. Allocated memory is still 186.6MB. Free memory was 106.7MB in the beginning and 105.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.19ms. Allocated memory is still 186.6MB. Free memory was 105.1MB in the beginning and 148.1MB in the end (delta: -43.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19938.06ms. Allocated memory was 186.6MB in the beginning and 580.9MB in the end (delta: 394.3MB). Free memory was 147.4MB in the beginning and 473.0MB in the end (delta: -325.6MB). Peak memory consumption was 274.9MB. Max. memory is 16.1GB. * Witness Printer took 80.08ms. Allocated memory is still 580.9MB. Free memory was 473.0MB in the beginning and 468.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.2s, OverallIterations: 14, TraceHistogramMax: 15, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 537 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 463 mSDsluCounter, 4515 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4074 mSDsCounter, 427 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4936 IncrementalHoareTripleChecker+Invalid, 5363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 427 mSolverCounterUnsat, 441 mSDtfsCounter, 4936 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2661 GetRequests, 2299 SyntacticMatches, 48 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=11, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 141 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 2119 NumberOfCodeBlocks, 2051 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 3127 ConstructedInterpolants, 0 QuantifiedInterpolants, 5927 SizeOfPredicates, 33 NumberOfNonLiveVariables, 2351 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 6168/8469 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: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Ensures: (((((\result == 1) && (\old(n) == 1)) || (\result == 0)) || (2 < \old(n))) && ((((((2 == \result) && (3 == \old(n))) || ((\result == 1) && (\old(n) == 1))) || ((3 == \result) && (\old(n) == 4))) || (4 < \old(n))) || (\old(n) < 1))) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Ensures: ((((\result == 0) || (1 < \old(n))) || (\old(n) == 1)) && ((\old(n) != 1) || (\result == 1))) RESULT: Ultimate proved your program to be correct! [2024-09-13 09:48:47,939 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE