./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 5189fb62 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-5189fb6-m [2024-09-13 03:24:42,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:24:42,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:24:42,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:24:42,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:24:42,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:24:42,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:24:42,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:24:42,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:24:42,948 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:24:42,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:24:42,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:24:42,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:24:42,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:24:42,951 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:24:42,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:24:42,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:24:42,951 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:24:42,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:24:42,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:24:42,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:24:42,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:24:42,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:24:42,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:24:42,957 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:24:42,958 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:24:42,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:24:42,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:24:42,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:24:43,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:24:43,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:24:43,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:24:43,173 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:24:43,173 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:24:43,175 INFO L431 ainManager$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 03:24:44,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:24:44,564 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:24:44,565 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-09-13 03:24:44,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4beb2b8fc/e61155487e124f6e91c8a481a4ccfd11/FLAGf31998534 [2024-09-13 03:24:44,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4beb2b8fc/e61155487e124f6e91c8a481a4ccfd11 [2024-09-13 03:24:44,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:24:44,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:24:44,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:24:44,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:24:44,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:24:44,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a2736c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44, skipping insertion in model container [2024-09-13 03:24:44,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,613 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:24:44,739 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 03:24:44,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:24:44,758 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:24:44,778 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 03:24:44,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:24:44,794 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:24:44,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44 WrapperNode [2024-09-13 03:24:44,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:24:44,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:24:44,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:24:44,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:24:44,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,832 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:24:44,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:24:44,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:24:44,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:24:44,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:24:44,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,857 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 03:24:44,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:24:44,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:24:44,875 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:24:44,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:24:44,876 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (1/1) ... [2024-09-13 03:24:44,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:24:44,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:44,910 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 03:24:44,915 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 03:24:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:24:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:24:44,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:24:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:24:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-13 03:24:44,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-13 03:24:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-13 03:24:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-13 03:24:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:24:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:24:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:24:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:24:45,008 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:24:45,012 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:24:45,133 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-09-13 03:24:45,134 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:24:45,157 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:24:45,159 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:24:45,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:24:45 BoogieIcfgContainer [2024-09-13 03:24:45,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:24:45,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:24:45,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:24:45,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:24:45,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:24:44" (1/3) ... [2024-09-13 03:24:45,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f802383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:24:45, skipping insertion in model container [2024-09-13 03:24:45,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:24:44" (2/3) ... [2024-09-13 03:24:45,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f802383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:24:45, skipping insertion in model container [2024-09-13 03:24:45,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:24:45" (3/3) ... [2024-09-13 03:24:45,169 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-09-13 03:24:45,183 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:24:45,183 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:24:45,235 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:24:45,241 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;@1cbeabb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:24:45,241 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:24:45,244 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 03:24:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 03:24:45,251 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:45,252 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:24:45,252 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:45,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -685851838, now seen corresponding path program 1 times [2024-09-13 03:24:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:45,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177748337] [2024-09-13 03:24:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:45,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,519 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 03:24:45,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177748337] [2024-09-13 03:24:45,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177748337] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:24:45,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:24:45,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:24:45,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194473821] [2024-09-13 03:24:45,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:24:45,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:24:45,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:24:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:24:45,559 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 03:24:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:45,643 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-09-13 03:24:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 03:24:45,646 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 03:24:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:45,653 INFO L225 Difference]: With dead ends: 44 [2024-09-13 03:24:45,653 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 03:24:45,656 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 03:24:45,658 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 03:24:45,659 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 03:24:45,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 03:24:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 03:24:45,720 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 03:24:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-13 03:24:45,725 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2024-09-13 03:24:45,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:45,725 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-13 03:24:45,726 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 03:24:45,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-13 03:24:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 03:24:45,728 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:45,729 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:24:45,729 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:24:45,733 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:45,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:45,734 INFO L85 PathProgramCache]: Analyzing trace with hash 924954813, now seen corresponding path program 1 times [2024-09-13 03:24:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540953708] [2024-09-13 03:24:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:45,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,836 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 03:24:45,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540953708] [2024-09-13 03:24:45,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540953708] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:24:45,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:24:45,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:24:45,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54686522] [2024-09-13 03:24:45,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:24:45,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:24:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:45,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:24:45,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:24:45,842 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 03:24:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:45,918 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-09-13 03:24:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 03:24:45,919 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 03:24:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:45,920 INFO L225 Difference]: With dead ends: 36 [2024-09-13 03:24:45,920 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 03:24:45,921 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 03:24:45,922 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:24:45,922 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:24:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 03:24:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2024-09-13 03:24:45,929 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 03:24:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-09-13 03:24:45,930 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2024-09-13 03:24:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:45,930 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-09-13 03:24:45,931 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 03:24:45,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-09-13 03:24:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 03:24:45,932 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:45,932 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 03:24:45,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 03:24:45,933 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:45,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1782416332, now seen corresponding path program 1 times [2024-09-13 03:24:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:45,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382005294] [2024-09-13 03:24:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:45,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-13 03:24:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,070 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 03:24:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382005294] [2024-09-13 03:24:46,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382005294] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351659210] [2024-09-13 03:24:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:46,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:46,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:46,072 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 03:24:46,073 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 03:24:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 03:24:46,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:46,190 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 03:24:46,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:46,364 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 03:24:46,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351659210] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:46,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:46,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2024-09-13 03:24:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019552854] [2024-09-13 03:24:46,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:46,365 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 03:24:46,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 03:24:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-09-13 03:24:46,366 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 03:24:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:46,497 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2024-09-13 03:24:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 03:24:46,497 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 03:24:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:46,498 INFO L225 Difference]: With dead ends: 58 [2024-09-13 03:24:46,499 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 03:24:46,500 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 03:24:46,501 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 03:24:46,502 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 03:24:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 03:24:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-13 03:24:46,514 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 03:24:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-09-13 03:24:46,515 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2024-09-13 03:24:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:46,516 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-09-13 03:24:46,516 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 03:24:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-09-13 03:24:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 03:24:46,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:46,520 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 03:24:46,542 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 03:24:46,720 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 03:24:46,721 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:46,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash -836643613, now seen corresponding path program 1 times [2024-09-13 03:24:46,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648935252] [2024-09-13 03:24:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,860 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 03:24:46,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:46,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648935252] [2024-09-13 03:24:46,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648935252] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:46,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223558498] [2024-09-13 03:24:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:46,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:46,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:46,865 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 03:24:46,866 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 03:24:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:46,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 03:24:46,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:46,958 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 03:24:46,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:47,107 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 03:24:47,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223558498] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:47,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:47,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-13 03:24:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406609357] [2024-09-13 03:24:47,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:47,111 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-13 03:24:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-13 03:24:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-09-13 03:24:47,112 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 03:24:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:47,297 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2024-09-13 03:24:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 03:24:47,298 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 03:24:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:47,300 INFO L225 Difference]: With dead ends: 56 [2024-09-13 03:24:47,300 INFO L226 Difference]: Without dead ends: 52 [2024-09-13 03:24:47,300 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 03:24:47,301 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 03:24:47,303 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 03:24:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-13 03:24:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-13 03:24:47,317 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 03:24:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-09-13 03:24:47,322 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 27 [2024-09-13 03:24:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:47,322 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-09-13 03:24:47,322 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 03:24:47,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:47,323 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-09-13 03:24:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 03:24:47,324 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:47,324 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 03:24:47,338 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 03:24:47,524 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 03:24:47,525 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:47,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash -925704228, now seen corresponding path program 1 times [2024-09-13 03:24:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:47,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599501242] [2024-09-13 03:24:47,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:47,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-13 03:24:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-13 03:24:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,628 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 03:24:47,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:47,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599501242] [2024-09-13 03:24:47,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599501242] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:47,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12751669] [2024-09-13 03:24:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:47,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:47,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:47,631 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 03:24:47,633 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 03:24:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:47,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 03:24:47,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:47,731 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 03:24:47,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:47,978 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 03:24:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12751669] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:47,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:47,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2024-09-13 03:24:47,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579869048] [2024-09-13 03:24:47,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:47,980 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 03:24:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 03:24:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-09-13 03:24:47,981 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 03:24:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:48,197 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2024-09-13 03:24:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-13 03:24:48,198 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 03:24:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:48,199 INFO L225 Difference]: With dead ends: 112 [2024-09-13 03:24:48,200 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 03:24:48,200 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 03:24:48,201 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 03:24:48,201 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 03:24:48,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 03:24:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-09-13 03:24:48,216 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 03:24:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 95 transitions. [2024-09-13 03:24:48,217 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 95 transitions. Word has length 39 [2024-09-13 03:24:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:48,217 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 95 transitions. [2024-09-13 03:24:48,217 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 03:24:48,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2024-09-13 03:24:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 03:24:48,219 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:48,219 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 03:24:48,232 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 03:24:48,419 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 03:24:48,420 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:48,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1261961157, now seen corresponding path program 1 times [2024-09-13 03:24:48,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:48,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856125144] [2024-09-13 03:24:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,572 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 03:24:48,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:48,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856125144] [2024-09-13 03:24:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856125144] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:48,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284070870] [2024-09-13 03:24:48,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:48,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:48,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:48,577 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 03:24:48,578 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 03:24:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:48,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 03:24:48,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:48,674 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 03:24:48,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:48,898 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 03:24:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284070870] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:48,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:48,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2024-09-13 03:24:48,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69759860] [2024-09-13 03:24:48,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:48,899 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-13 03:24:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-13 03:24:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-09-13 03:24:48,900 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 03:24:49,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:49,164 INFO L93 Difference]: Finished difference Result 182 states and 328 transitions. [2024-09-13 03:24:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-13 03:24:49,165 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 03:24:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:49,167 INFO L225 Difference]: With dead ends: 182 [2024-09-13 03:24:49,167 INFO L226 Difference]: Without dead ends: 122 [2024-09-13 03:24:49,170 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 03:24:49,171 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 03:24:49,171 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 03:24:49,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-13 03:24:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2024-09-13 03:24:49,189 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 03:24:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-09-13 03:24:49,193 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 40 [2024-09-13 03:24:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:49,194 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-09-13 03:24:49,194 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 03:24:49,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-09-13 03:24:49,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-13 03:24:49,199 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:49,199 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 03:24:49,213 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 03:24:49,400 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 03:24:49,400 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:49,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1624375296, now seen corresponding path program 1 times [2024-09-13 03:24:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:49,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412154120] [2024-09-13 03:24:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:49,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:24:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,582 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 03:24:49,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:49,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412154120] [2024-09-13 03:24:49,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412154120] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:49,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775633064] [2024-09-13 03:24:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:49,586 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 03:24:49,587 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 03:24:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:49,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 03:24:49,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:49,723 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 03:24:49,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:50,101 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 03:24:50,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775633064] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:50,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:50,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2024-09-13 03:24:50,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247815276] [2024-09-13 03:24:50,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:50,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 03:24:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 03:24:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-09-13 03:24:50,103 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 03:24:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:50,414 INFO L93 Difference]: Finished difference Result 252 states and 489 transitions. [2024-09-13 03:24:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 03:24:50,414 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 03:24:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:50,417 INFO L225 Difference]: With dead ends: 252 [2024-09-13 03:24:50,417 INFO L226 Difference]: Without dead ends: 155 [2024-09-13 03:24:50,418 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 03:24:50,419 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:24:50,419 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 348 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:24:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-13 03:24:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 112. [2024-09-13 03:24:50,436 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 03:24:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 180 transitions. [2024-09-13 03:24:50,437 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 180 transitions. Word has length 54 [2024-09-13 03:24:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:50,437 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 180 transitions. [2024-09-13 03:24:50,438 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 03:24:50,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 180 transitions. [2024-09-13 03:24:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-13 03:24:50,440 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:50,440 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 03:24:50,452 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 03:24:50,640 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 03:24:50,641 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:50,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:50,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2073072172, now seen corresponding path program 1 times [2024-09-13 03:24:50,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:50,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942531429] [2024-09-13 03:24:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 03:24:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,891 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 03:24:50,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:50,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942531429] [2024-09-13 03:24:50,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942531429] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:50,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159893613] [2024-09-13 03:24:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:50,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:50,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:50,893 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 03:24:50,894 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 03:24:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:50,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 03:24:50,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:51,000 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 03:24:51,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:51,288 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 03:24:51,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159893613] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:51,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:51,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 19 [2024-09-13 03:24:51,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425851031] [2024-09-13 03:24:51,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:51,289 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 03:24:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:51,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 03:24:51,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-09-13 03:24:51,290 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 03:24:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:51,599 INFO L93 Difference]: Finished difference Result 254 states and 496 transitions. [2024-09-13 03:24:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-13 03:24:51,600 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 03:24:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:51,601 INFO L225 Difference]: With dead ends: 254 [2024-09-13 03:24:51,601 INFO L226 Difference]: Without dead ends: 137 [2024-09-13 03:24:51,603 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 03:24:51,603 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:24:51,603 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 264 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:24:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-09-13 03:24:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 114. [2024-09-13 03:24:51,618 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 03:24:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 177 transitions. [2024-09-13 03:24:51,620 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 177 transitions. Word has length 82 [2024-09-13 03:24:51,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:51,620 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 177 transitions. [2024-09-13 03:24:51,620 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 03:24:51,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:51,621 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 177 transitions. [2024-09-13 03:24:51,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-13 03:24:51,623 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:51,623 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 03:24:51,635 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 03:24:51,827 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 03:24:51,828 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:51,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash 146808360, now seen corresponding path program 1 times [2024-09-13 03:24:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673286751] [2024-09-13 03:24:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:51,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:51,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-13 03:24:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 03:24:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,372 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 03:24:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673286751] [2024-09-13 03:24:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673286751] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832153775] [2024-09-13 03:24:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:52,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:52,374 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 03:24:52,375 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 03:24:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:52,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 03:24:52,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:52,570 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 03:24:52,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:53,360 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 03:24:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832153775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:53,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 13] total 32 [2024-09-13 03:24:53,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610020326] [2024-09-13 03:24:53,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:53,361 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-13 03:24:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-13 03:24:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2024-09-13 03:24:53,362 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 03:24:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:53,934 INFO L93 Difference]: Finished difference Result 244 states and 453 transitions. [2024-09-13 03:24:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-13 03:24:53,934 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 03:24:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:53,936 INFO L225 Difference]: With dead ends: 244 [2024-09-13 03:24:53,936 INFO L226 Difference]: Without dead ends: 116 [2024-09-13 03:24:53,938 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 03:24:53,938 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:24:53,938 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 482 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 03:24:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-13 03:24:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-09-13 03:24:53,947 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 03:24:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2024-09-13 03:24:53,948 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 205 [2024-09-13 03:24:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:53,948 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2024-09-13 03:24:53,948 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 03:24:53,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2024-09-13 03:24:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-13 03:24:53,950 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:53,950 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 03:24:53,964 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-13 03:24:54,154 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 03:24:54,155 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:54,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1761300740, now seen corresponding path program 2 times [2024-09-13 03:24:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650007548] [2024-09-13 03:24:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 03:24:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:54,393 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 03:24:54,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:54,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650007548] [2024-09-13 03:24:54,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650007548] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090592429] [2024-09-13 03:24:54,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:24:54,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:54,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:54,396 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 03:24:54,398 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 03:24:54,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:24:54,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:24:54,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 03:24:54,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:54,499 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 03:24:54,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:54,753 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 03:24:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090592429] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:54,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:54,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 19 [2024-09-13 03:24:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304921174] [2024-09-13 03:24:54,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:54,754 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 03:24:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 03:24:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-09-13 03:24:54,755 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 03:24:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:54,906 INFO L93 Difference]: Finished difference Result 194 states and 277 transitions. [2024-09-13 03:24:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 03:24:54,907 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 03:24:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:54,908 INFO L225 Difference]: With dead ends: 194 [2024-09-13 03:24:54,908 INFO L226 Difference]: Without dead ends: 109 [2024-09-13 03:24:54,909 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 208 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2024-09-13 03:24:54,909 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 03:24:54,909 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 03:24:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-09-13 03:24:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-09-13 03:24:54,927 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 03:24:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2024-09-13 03:24:54,937 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 95 [2024-09-13 03:24:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:54,937 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2024-09-13 03:24:54,938 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 03:24:54,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2024-09-13 03:24:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-13 03:24:54,940 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:54,940 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 03:24:54,953 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-13 03:24:55,142 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 03:24:55,143 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:55,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:55,144 INFO L85 PathProgramCache]: Analyzing trace with hash 719095213, now seen corresponding path program 3 times [2024-09-13 03:24:55,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:55,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42394153] [2024-09-13 03:24:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:55,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 03:24:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:55,762 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 03:24:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42394153] [2024-09-13 03:24:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42394153] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318121436] [2024-09-13 03:24:55,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:24:55,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:55,764 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 03:24:55,765 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 03:24:55,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-13 03:24:55,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:24:55,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-13 03:24:55,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:55,984 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 03:24:55,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:56,271 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 03:24:56,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318121436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:56,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:56,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-09-13 03:24:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319232637] [2024-09-13 03:24:56,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:56,272 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 03:24:56,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 03:24:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:24:56,273 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 03:24:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:56,418 INFO L93 Difference]: Finished difference Result 137 states and 193 transitions. [2024-09-13 03:24:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 03:24:56,418 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 03:24:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:56,419 INFO L225 Difference]: With dead ends: 137 [2024-09-13 03:24:56,420 INFO L226 Difference]: Without dead ends: 133 [2024-09-13 03:24:56,420 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 03:24:56,420 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:24:56,421 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 969 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:24:56,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-09-13 03:24:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2024-09-13 03:24:56,436 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 03:24:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2024-09-13 03:24:56,438 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 109 [2024-09-13 03:24:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:56,438 INFO L474 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2024-09-13 03:24:56,438 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 03:24:56,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2024-09-13 03:24:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-09-13 03:24:56,439 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:56,440 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 03:24:56,452 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 03:24:56,643 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 03:24:56,644 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:56,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:56,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1579294066, now seen corresponding path program 4 times [2024-09-13 03:24:56,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:56,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870442534] [2024-09-13 03:24:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:56,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-13 03:24:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:56,895 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 03:24:56,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:56,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870442534] [2024-09-13 03:24:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870442534] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:56,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976560476] [2024-09-13 03:24:56,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:24:56,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:56,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:56,897 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 03:24:56,898 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 03:24:56,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:24:56,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:24:56,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 03:24:56,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:57,034 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 03:24:57,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:57,459 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 03:24:57,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976560476] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:57,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:57,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 24 [2024-09-13 03:24:57,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670237050] [2024-09-13 03:24:57,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:57,460 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 03:24:57,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 03:24:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-09-13 03:24:57,461 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 03:24:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:57,680 INFO L93 Difference]: Finished difference Result 240 states and 354 transitions. [2024-09-13 03:24:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 03:24:57,681 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 03:24:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:57,682 INFO L225 Difference]: With dead ends: 240 [2024-09-13 03:24:57,682 INFO L226 Difference]: Without dead ends: 129 [2024-09-13 03:24:57,683 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 03:24:57,683 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 03:24:57,684 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 308 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 03:24:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-09-13 03:24:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2024-09-13 03:24:57,693 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 03:24:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2024-09-13 03:24:57,694 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 110 [2024-09-13 03:24:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:57,694 INFO L474 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2024-09-13 03:24:57,694 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 03:24:57,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2024-09-13 03:24:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-13 03:24:57,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:57,696 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 03:24:57,707 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-13 03:24:57,899 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 03:24:57,900 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:57,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash -273902236, now seen corresponding path program 1 times [2024-09-13 03:24:57,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:57,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609733321] [2024-09-13 03:24:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:57,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:57,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-13 03:24:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-13 03:24:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,164 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 03:24:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:24:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609733321] [2024-09-13 03:24:58,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609733321] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:24:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632947697] [2024-09-13 03:24:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:58,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:24:58,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:24:58,166 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 03:24:58,167 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 03:24:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:58,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 03:24:58,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:24:58,324 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 03:24:58,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:24:59,225 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 03:24:59,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632947697] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:24:59,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:24:59,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 15] total 24 [2024-09-13 03:24:59,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161216447] [2024-09-13 03:24:59,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:24:59,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-13 03:24:59,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:24:59,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-13 03:24:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-09-13 03:24:59,227 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 03:24:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:24:59,452 INFO L93 Difference]: Finished difference Result 229 states and 318 transitions. [2024-09-13 03:24:59,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 03:24:59,452 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 03:24:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:24:59,455 INFO L225 Difference]: With dead ends: 229 [2024-09-13 03:24:59,455 INFO L226 Difference]: Without dead ends: 84 [2024-09-13 03:24:59,457 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 03:24:59,457 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 03:24:59,458 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 03:24:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-09-13 03:24:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-09-13 03:24:59,465 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 03:24:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2024-09-13 03:24:59,466 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 123 [2024-09-13 03:24:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:24:59,466 INFO L474 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2024-09-13 03:24:59,466 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 03:24:59,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2024-09-13 03:24:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-13 03:24:59,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:24:59,468 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 03:24:59,483 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-13 03:24:59,668 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 03:24:59,668 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:24:59,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:24:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -543433254, now seen corresponding path program 5 times [2024-09-13 03:24:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:24:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663389867] [2024-09-13 03:24:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:24:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:24:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:24:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-13 03:24:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:24:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:24:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:24:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-13 03:24:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:24:59,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:24:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:25:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:25:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:25:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-13 03:25:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-13 03:25:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:25:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 03:25:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:25:00,059 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 03:25:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:25:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663389867] [2024-09-13 03:25:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663389867] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:25:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966621460] [2024-09-13 03:25:00,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:25:00,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:25:00,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:25:00,060 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 03:25:00,061 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 03:25:00,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-09-13 03:25:00,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:25:00,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-13 03:25:00,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:25:00,238 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 03:25:00,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:25:00,904 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 03:25:00,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966621460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:25:00,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:25:00,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 15] total 32 [2024-09-13 03:25:00,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935321079] [2024-09-13 03:25:00,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:25:00,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-13 03:25:00,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:25:00,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-13 03:25:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2024-09-13 03:25:00,906 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 03:25:01,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:25:01,198 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-09-13 03:25:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-13 03:25:01,199 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 03:25:01,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:25:01,199 INFO L225 Difference]: With dead ends: 89 [2024-09-13 03:25:01,200 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:25:01,200 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 03:25:01,201 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 03:25:01,201 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 03:25:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:25:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:25:01,202 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 03:25:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:25:01,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-09-13 03:25:01,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:25:01,203 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:25:01,203 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 03:25:01,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:25:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:25:01,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:25:01,205 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:25:01,217 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 03:25:01,409 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 03:25:01,412 INFO L408 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:25:01,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:25:04,896 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:25:04,916 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 03:25:04,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 03:25:04 BoogieIcfgContainer [2024-09-13 03:25:04,918 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 03:25:04,918 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 03:25:04,918 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 03:25:04,919 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 03:25:04,919 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:24:45" (3/4) ... [2024-09-13 03:25:04,930 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 03:25:04,933 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 03:25:04,933 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 03:25:04,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-09-13 03:25:04,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-09-13 03:25:04,938 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-13 03:25:04,939 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-13 03:25:04,939 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-13 03:25:04,939 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 03:25:05,015 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 03:25:05,015 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 03:25:05,015 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 03:25:05,016 INFO L158 Benchmark]: Toolchain (without parser) took 20430.43ms. Allocated memory was 138.4MB in the beginning and 553.6MB in the end (delta: 415.2MB). Free memory was 67.9MB in the beginning and 515.4MB in the end (delta: -447.4MB). Peak memory consumption was 240.4MB. Max. memory is 16.1GB. [2024-09-13 03:25:05,016 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory was 101.5MB in the beginning and 101.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:25:05,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.27ms. Allocated memory is still 138.4MB. Free memory was 67.8MB in the beginning and 56.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 03:25:05,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.24ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 56.5MB in the beginning and 153.3MB in the end (delta: -96.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-09-13 03:25:05,016 INFO L158 Benchmark]: Boogie Preprocessor took 41.34ms. Allocated memory is still 182.5MB. Free memory was 153.2MB in the beginning and 152.7MB in the end (delta: 476.6kB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-09-13 03:25:05,016 INFO L158 Benchmark]: RCFGBuilder took 284.59ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 140.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 03:25:05,017 INFO L158 Benchmark]: TraceAbstraction took 19755.68ms. Allocated memory was 182.5MB in the beginning and 461.4MB in the end (delta: 278.9MB). Free memory was 139.3MB in the beginning and 155.4MB in the end (delta: -16.2MB). Peak memory consumption was 266.7MB. Max. memory is 16.1GB. [2024-09-13 03:25:05,017 INFO L158 Benchmark]: Witness Printer took 96.98ms. Allocated memory was 461.4MB in the beginning and 553.6MB in the end (delta: 92.3MB). Free memory was 155.4MB in the beginning and 515.4MB in the end (delta: -359.9MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2024-09-13 03:25:05,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory was 101.5MB in the beginning and 101.3MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.27ms. Allocated memory is still 138.4MB. Free memory was 67.8MB in the beginning and 56.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.24ms. Allocated memory was 138.4MB in the beginning and 182.5MB in the end (delta: 44.0MB). Free memory was 56.5MB in the beginning and 153.3MB in the end (delta: -96.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.34ms. Allocated memory is still 182.5MB. Free memory was 153.2MB in the beginning and 152.7MB in the end (delta: 476.6kB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * RCFGBuilder took 284.59ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 140.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 19755.68ms. Allocated memory was 182.5MB in the beginning and 461.4MB in the end (delta: 278.9MB). Free memory was 139.3MB in the beginning and 155.4MB in the end (delta: -16.2MB). Peak memory consumption was 266.7MB. Max. memory is 16.1GB. * Witness Printer took 96.98ms. Allocated memory was 461.4MB in the beginning and 553.6MB in the end (delta: 92.3MB). Free memory was 155.4MB in the beginning and 515.4MB in the end (delta: -359.9MB). Peak memory consumption was 3.9MB. 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, 529 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 457 mSDsluCounter, 4474 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4035 mSDsCounter, 425 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4959 IncrementalHoareTripleChecker+Invalid, 5384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 425 mSolverCounterUnsat, 439 mSDtfsCounter, 4959 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 03:25:05,041 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE