./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_5-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 19:47:01,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 19:47:01,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 19:47:01,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 19:47:01,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 19:47:01,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 19:47:01,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 19:47:01,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 19:47:01,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 19:47:01,547 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 19:47:01,548 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 19:47:01,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 19:47:01,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 19:47:01,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 19:47:01,549 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 19:47:01,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 19:47:01,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 19:47:01,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 19:47:01,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 19:47:01,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 19:47:01,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 19:47:01,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 19:47:01,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 19:47:01,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 19:47:01,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 19:47:01,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 19:47:01,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 19:47:01,557 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 19:47:01,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 19:47:01,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 19:47:01,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 19:47:01,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 19:47:01,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:47:01,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 19:47:01,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 19:47:01,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 19:47:01,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 19:47:01,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 19:47:01,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 19:47:01,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 19:47:01,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 19:47:01,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 19:47:01,562 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 19:47:01,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 19:47:01,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 19:47:01,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 19:47:01,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 19:47:01,911 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 19:47:01,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-09-15 19:47:03,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 19:47:03,505 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 19:47:03,506 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-09-15 19:47:03,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c73b907d0/85192efdf887443085535da0e4ce25cf/FLAG771373087 [2024-09-15 19:47:03,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c73b907d0/85192efdf887443085535da0e4ce25cf [2024-09-15 19:47:03,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 19:47:03,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 19:47:03,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 19:47:03,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 19:47:03,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 19:47:03,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f653982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03, skipping insertion in model container [2024-09-15 19:47:03,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,564 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 19:47:03,742 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2024-09-15 19:47:03,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:47:03,766 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 19:47:03,779 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2024-09-15 19:47:03,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 19:47:03,795 INFO L204 MainTranslator]: Completed translation [2024-09-15 19:47:03,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03 WrapperNode [2024-09-15 19:47:03,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 19:47:03,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 19:47:03,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 19:47:03,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 19:47:03,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,815 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 19:47:03,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 19:47:03,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 19:47:03,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 19:47:03,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 19:47:03,825 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,841 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 19:47:03,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 19:47:03,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 19:47:03,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 19:47:03,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 19:47:03,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (1/1) ... [2024-09-15 19:47:03,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 19:47:03,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:03,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 19:47:03,889 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 19:47:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 19:47:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 19:47:03,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 19:47:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 19:47:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 19:47:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 19:47:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 19:47:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 19:47:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-09-15 19:47:03,929 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-09-15 19:47:03,990 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 19:47:03,992 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 19:47:04,117 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-09-15 19:47:04,117 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 19:47:04,145 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 19:47:04,145 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 19:47:04,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:47:04 BoogieIcfgContainer [2024-09-15 19:47:04,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 19:47:04,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 19:47:04,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 19:47:04,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 19:47:04,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 07:47:03" (1/3) ... [2024-09-15 19:47:04,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69017a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:47:04, skipping insertion in model container [2024-09-15 19:47:04,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 07:47:03" (2/3) ... [2024-09-15 19:47:04,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69017a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 07:47:04, skipping insertion in model container [2024-09-15 19:47:04,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:47:04" (3/3) ... [2024-09-15 19:47:04,156 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2024-09-15 19:47:04,174 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 19:47:04,174 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 19:47:04,230 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 19:47:04,239 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;@58388b0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 19:47:04,240 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 19:47:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-15 19:47:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-15 19:47:04,251 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:04,251 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:04,252 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:04,258 INFO L85 PathProgramCache]: Analyzing trace with hash 358193300, now seen corresponding path program 1 times [2024-09-15 19:47:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:04,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397856536] [2024-09-15 19:47:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:04,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:04,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:04,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:47:04,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:04,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397856536] [2024-09-15 19:47:04,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397856536] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:47:04,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:47:04,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:47:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007324083] [2024-09-15 19:47:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:47:04,592 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:47:04,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:47:04,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:47:04,611 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 19:47:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:04,700 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-09-15 19:47:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:47:04,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-15 19:47:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:04,711 INFO L225 Difference]: With dead ends: 35 [2024-09-15 19:47:04,712 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 19:47:04,715 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:47:04,718 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:04,719 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 19:47:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-15 19:47:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-15 19:47:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-15 19:47:04,765 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2024-09-15 19:47:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:04,767 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-15 19:47:04,767 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 19:47:04,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-15 19:47:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-15 19:47:04,770 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:04,770 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:04,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 19:47:04,772 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:04,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1069801351, now seen corresponding path program 1 times [2024-09-15 19:47:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:04,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279535430] [2024-09-15 19:47:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:04,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:04,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:04,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 19:47:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279535430] [2024-09-15 19:47:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279535430] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 19:47:04,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 19:47:04,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 19:47:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143712028] [2024-09-15 19:47:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 19:47:04,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 19:47:04,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:04,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 19:47:04,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:47:04,930 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 19:47:05,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:05,001 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-09-15 19:47:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 19:47:05,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-15 19:47:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:05,003 INFO L225 Difference]: With dead ends: 27 [2024-09-15 19:47:05,004 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 19:47:05,004 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 19:47:05,007 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:05,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 19:47:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-09-15 19:47:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-15 19:47:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-15 19:47:05,021 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2024-09-15 19:47:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:05,021 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-15 19:47:05,022 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 19:47:05,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-15 19:47:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-15 19:47:05,023 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:05,025 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:05,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 19:47:05,025 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:05,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:05,027 INFO L85 PathProgramCache]: Analyzing trace with hash -648535868, now seen corresponding path program 1 times [2024-09-15 19:47:05,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:05,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525512659] [2024-09-15 19:47:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:05,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:05,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:05,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:05,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:05,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-15 19:47:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 19:47:05,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:05,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525512659] [2024-09-15 19:47:05,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525512659] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:05,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908351319] [2024-09-15 19:47:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:05,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:05,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:05,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:05,268 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 19:47:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:05,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 19:47:05,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 19:47:05,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-15 19:47:05,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908351319] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:05,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:05,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-09-15 19:47:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732063572] [2024-09-15 19:47:05,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:05,663 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 19:47:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 19:47:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:47:05,665 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-15 19:47:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:05,765 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-09-15 19:47:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 19:47:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) Word has length 26 [2024-09-15 19:47:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:05,767 INFO L225 Difference]: With dead ends: 38 [2024-09-15 19:47:05,767 INFO L226 Difference]: Without dead ends: 23 [2024-09-15 19:47:05,768 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-15 19:47:05,769 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:05,769 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-15 19:47:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-15 19:47:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-15 19:47:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-09-15 19:47:05,783 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2024-09-15 19:47:05,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:05,784 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-09-15 19:47:05,784 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 8 states have call successors, (9) [2024-09-15 19:47:05,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-09-15 19:47:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-15 19:47:05,787 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:05,787 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:05,806 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 19:47:05,991 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:05,992 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:05,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1169471199, now seen corresponding path program 1 times [2024-09-15 19:47:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573637575] [2024-09-15 19:47:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:05,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-15 19:47:06,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:06,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573637575] [2024-09-15 19:47:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573637575] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:06,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919079578] [2024-09-15 19:47:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:06,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:06,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:06,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:06,161 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 19:47:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 19:47:06,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-15 19:47:06,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-15 19:47:06,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919079578] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:06,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:06,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-15 19:47:06,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316654946] [2024-09-15 19:47:06,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:06,445 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-15 19:47:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:06,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-15 19:47:06,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-15 19:47:06,447 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 19:47:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:06,585 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-09-15 19:47:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 19:47:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Word has length 27 [2024-09-15 19:47:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:06,587 INFO L225 Difference]: With dead ends: 41 [2024-09-15 19:47:06,587 INFO L226 Difference]: Without dead ends: 37 [2024-09-15 19:47:06,588 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-09-15 19:47:06,591 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:06,593 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 83 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-15 19:47:06,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-15 19:47:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (17), 8 states have call predecessors, (17), 7 states have call successors, (17) [2024-09-15 19:47:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2024-09-15 19:47:06,606 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2024-09-15 19:47:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:06,606 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2024-09-15 19:47:06,607 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 19:47:06,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-09-15 19:47:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-15 19:47:06,609 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:06,609 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:06,624 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 19:47:06,813 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:06,814 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:06,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 413055705, now seen corresponding path program 2 times [2024-09-15 19:47:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920923470] [2024-09-15 19:47:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:06,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-09-15 19:47:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920923470] [2024-09-15 19:47:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920923470] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787921661] [2024-09-15 19:47:07,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 19:47:07,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:07,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:07,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 19:47:07,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 19:47:07,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:07,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-15 19:47:07,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-15 19:47:07,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-09-15 19:47:07,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787921661] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:07,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:07,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2024-09-15 19:47:07,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587918968] [2024-09-15 19:47:07,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:07,526 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-15 19:47:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:07,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-15 19:47:07,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-09-15 19:47:07,527 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-15 19:47:07,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:07,714 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2024-09-15 19:47:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-15 19:47:07,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 40 [2024-09-15 19:47:07,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:07,716 INFO L225 Difference]: With dead ends: 72 [2024-09-15 19:47:07,718 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 19:47:07,719 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-09-15 19:47:07,720 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:07,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 91 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 19:47:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 19:47:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-09-15 19:47:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-09-15 19:47:07,731 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2024-09-15 19:47:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:07,731 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-09-15 19:47:07,732 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-09-15 19:47:07,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-09-15 19:47:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-15 19:47:07,734 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:07,734 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:07,752 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 19:47:07,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:07,939 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:07,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:07,939 INFO L85 PathProgramCache]: Analyzing trace with hash -926093039, now seen corresponding path program 3 times [2024-09-15 19:47:07,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:07,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941861664] [2024-09-15 19:47:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 19:47:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941861664] [2024-09-15 19:47:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941861664] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692204836] [2024-09-15 19:47:08,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 19:47:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:08,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:08,270 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 19:47:08,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-15 19:47:08,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:08,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-15 19:47:08,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-09-15 19:47:08,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-15 19:47:08,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692204836] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:08,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:08,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 15 [2024-09-15 19:47:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023635459] [2024-09-15 19:47:08,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:08,685 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-15 19:47:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-15 19:47:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-09-15 19:47:08,688 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2024-09-15 19:47:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:08,847 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2024-09-15 19:47:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-15 19:47:08,848 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 68 [2024-09-15 19:47:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:08,851 INFO L225 Difference]: With dead ends: 83 [2024-09-15 19:47:08,855 INFO L226 Difference]: Without dead ends: 79 [2024-09-15 19:47:08,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-09-15 19:47:08,856 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:08,856 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 111 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 19:47:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-15 19:47:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-09-15 19:47:08,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.148936170212766) internal successors, (54), 46 states have internal predecessors, (54), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (32), 18 states have call predecessors, (32), 14 states have call successors, (32) [2024-09-15 19:47:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2024-09-15 19:47:08,876 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 68 [2024-09-15 19:47:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:08,877 INFO L474 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2024-09-15 19:47:08,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 10 states have call successors, (15), 1 states have call predecessors, (15), 5 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2024-09-15 19:47:08,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2024-09-15 19:47:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-15 19:47:08,880 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:08,880 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:08,901 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 19:47:09,081 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:09,081 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash -257182465, now seen corresponding path program 4 times [2024-09-15 19:47:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758966586] [2024-09-15 19:47:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:09,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-09-15 19:47:10,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758966586] [2024-09-15 19:47:10,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758966586] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396532721] [2024-09-15 19:47:10,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-15 19:47:10,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:10,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:10,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:10,025 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 19:47:10,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-15 19:47:10,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:10,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-15 19:47:10,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-09-15 19:47:10,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-09-15 19:47:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396532721] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:10,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-09-15 19:47:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343521771] [2024-09-15 19:47:10,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:10,712 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 19:47:10,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 19:47:10,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-09-15 19:47:10,713 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-15 19:47:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:10,919 INFO L93 Difference]: Finished difference Result 135 states and 223 transitions. [2024-09-15 19:47:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-15 19:47:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2024-09-15 19:47:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:10,923 INFO L225 Difference]: With dead ends: 135 [2024-09-15 19:47:10,923 INFO L226 Difference]: Without dead ends: 131 [2024-09-15 19:47:10,924 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-09-15 19:47:10,925 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:10,925 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 504 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:47:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-15 19:47:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 83. [2024-09-15 19:47:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 52 states have internal predecessors, (60), 17 states have call successors, (17), 8 states have call predecessors, (17), 12 states have return successors, (46), 22 states have call predecessors, (46), 16 states have call successors, (46) [2024-09-15 19:47:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 123 transitions. [2024-09-15 19:47:10,957 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 123 transitions. Word has length 109 [2024-09-15 19:47:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:10,960 INFO L474 AbstractCegarLoop]: Abstraction has 83 states and 123 transitions. [2024-09-15 19:47:10,960 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-15 19:47:10,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 123 transitions. [2024-09-15 19:47:10,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-15 19:47:10,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:10,966 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:10,986 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 19:47:11,166 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-15 19:47:11,167 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:11,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash 994115606, now seen corresponding path program 5 times [2024-09-15 19:47:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:11,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266384636] [2024-09-15 19:47:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 198 proven. 308 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-09-15 19:47:11,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:11,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266384636] [2024-09-15 19:47:11,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266384636] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:11,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287029239] [2024-09-15 19:47:11,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-15 19:47:11,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:11,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:11,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:11,733 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 19:47:11,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-09-15 19:47:11,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:11,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-15 19:47:11,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 187 proven. 336 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-09-15 19:47:11,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 189 proven. 354 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-09-15 19:47:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287029239] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:13,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 17] total 29 [2024-09-15 19:47:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443970209] [2024-09-15 19:47:13,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:13,025 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-15 19:47:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-15 19:47:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2024-09-15 19:47:13,027 INFO L87 Difference]: Start difference. First operand 83 states and 123 transitions. Second operand has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 21 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (35), 17 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-15 19:47:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:13,357 INFO L93 Difference]: Finished difference Result 154 states and 259 transitions. [2024-09-15 19:47:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-15 19:47:13,358 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 21 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (35), 17 states have call predecessors, (35), 21 states have call successors, (35) Word has length 136 [2024-09-15 19:47:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:13,360 INFO L225 Difference]: With dead ends: 154 [2024-09-15 19:47:13,360 INFO L226 Difference]: Without dead ends: 80 [2024-09-15 19:47:13,366 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 295 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=431, Invalid=1209, Unknown=0, NotChecked=0, Total=1640 [2024-09-15 19:47:13,367 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:13,367 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 187 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:47:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-15 19:47:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2024-09-15 19:47:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 43 states have internal predecessors, (47), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (25), 14 states have call predecessors, (25), 11 states have call successors, (25) [2024-09-15 19:47:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2024-09-15 19:47:13,391 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 136 [2024-09-15 19:47:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:13,391 INFO L474 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2024-09-15 19:47:13,392 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 21 states have call successors, (28), 1 states have call predecessors, (28), 10 states have return successors, (35), 17 states have call predecessors, (35), 21 states have call successors, (35) [2024-09-15 19:47:13,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2024-09-15 19:47:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-09-15 19:47:13,397 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 19:47:13,397 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 19:47:13,415 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-15 19:47:13,601 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:13,602 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 19:47:13,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1689956084, now seen corresponding path program 6 times [2024-09-15 19:47:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 19:47:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259941448] [2024-09-15 19:47:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 19:47:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 19:47:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 19:47:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-15 19:47:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 19:47:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 19:47:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:13,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-15 19:47:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-15 19:47:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 19:47:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 19:47:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 19:47:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 230 proven. 170 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2024-09-15 19:47:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 19:47:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259941448] [2024-09-15 19:47:14,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259941448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 19:47:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590136679] [2024-09-15 19:47:14,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-15 19:47:14,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:14,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 19:47:14,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 19:47:14,022 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-15 19:47:14,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-15 19:47:14,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 19:47:14,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-15 19:47:14,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 19:47:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 131 proven. 302 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-09-15 19:47:14,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 19:47:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 131 proven. 337 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2024-09-15 19:47:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590136679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 19:47:15,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 19:47:15,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 15] total 23 [2024-09-15 19:47:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145379064] [2024-09-15 19:47:15,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 19:47:15,410 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-15 19:47:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 19:47:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-15 19:47:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-09-15 19:47:15,411 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-15 19:47:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 19:47:15,634 INFO L93 Difference]: Finished difference Result 130 states and 184 transitions. [2024-09-15 19:47:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-15 19:47:15,635 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 136 [2024-09-15 19:47:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 19:47:15,636 INFO L225 Difference]: With dead ends: 130 [2024-09-15 19:47:15,636 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 19:47:15,637 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 296 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2024-09-15 19:47:15,638 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 19:47:15,638 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 150 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 19:47:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 19:47:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 19:47:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 19:47:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 19:47:15,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2024-09-15 19:47:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 19:47:15,642 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 19:47:15,642 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 23 states have internal predecessors, (67), 18 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-09-15 19:47:15,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 19:47:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 19:47:15,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 19:47:15,645 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 19:47:15,663 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-15 19:47:15,846 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 19:47:15,849 INFO L408 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2024-09-15 19:47:15,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 19:47:17,083 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 19:47:17,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 07:47:17 BoogieIcfgContainer [2024-09-15 19:47:17,103 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 19:47:17,104 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 19:47:17,104 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 19:47:17,104 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 19:47:17,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 07:47:04" (3/4) ... [2024-09-15 19:47:17,106 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 19:47:17,109 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 19:47:17,110 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 19:47:17,110 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-09-15 19:47:17,114 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-15 19:47:17,114 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-15 19:47:17,114 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 19:47:17,115 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 19:47:17,192 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 19:47:17,192 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 19:47:17,192 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 19:47:17,193 INFO L158 Benchmark]: Toolchain (without parser) took 13658.47ms. Allocated memory was 67.1MB in the beginning and 211.8MB in the end (delta: 144.7MB). Free memory was 34.7MB in the beginning and 86.8MB in the end (delta: -52.1MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2024-09-15 19:47:17,193 INFO L158 Benchmark]: CDTParser took 1.38ms. Allocated memory is still 46.1MB. Free memory was 26.5MB in the beginning and 26.5MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:47:17,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.92ms. Allocated memory is still 67.1MB. Free memory was 34.5MB in the beginning and 41.6MB in the end (delta: -7.0MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2024-09-15 19:47:17,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.37ms. Allocated memory is still 67.1MB. Free memory was 41.6MB in the beginning and 40.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 19:47:17,194 INFO L158 Benchmark]: Boogie Preprocessor took 33.09ms. Allocated memory is still 67.1MB. Free memory was 40.5MB in the beginning and 38.9MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 19:47:17,194 INFO L158 Benchmark]: RCFGBuilder took 295.73ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 45.3MB in the end (delta: -6.4MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-09-15 19:47:17,195 INFO L158 Benchmark]: TraceAbstraction took 12955.35ms. Allocated memory was 67.1MB in the beginning and 211.8MB in the end (delta: 144.7MB). Free memory was 44.7MB in the beginning and 91.0MB in the end (delta: -46.3MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. [2024-09-15 19:47:17,195 INFO L158 Benchmark]: Witness Printer took 88.77ms. Allocated memory is still 211.8MB. Free memory was 91.0MB in the beginning and 86.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 19:47:17,196 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38ms. Allocated memory is still 46.1MB. Free memory was 26.5MB in the beginning and 26.5MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.92ms. Allocated memory is still 67.1MB. Free memory was 34.5MB in the beginning and 41.6MB in the end (delta: -7.0MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.37ms. Allocated memory is still 67.1MB. Free memory was 41.6MB in the beginning and 40.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.09ms. Allocated memory is still 67.1MB. Free memory was 40.5MB in the beginning and 38.9MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 295.73ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 45.3MB in the end (delta: -6.4MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12955.35ms. Allocated memory was 67.1MB in the beginning and 211.8MB in the end (delta: 144.7MB). Free memory was 44.7MB in the beginning and 91.0MB in the end (delta: -46.3MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. * Witness Printer took 88.77ms. Allocated memory is still 211.8MB. Free memory was 91.0MB in the beginning and 86.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 9, TraceHistogramMax: 19, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 238 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200 mSDsluCounter, 1270 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1070 mSDsCounter, 196 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1404 IncrementalHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 196 mSolverCounterUnsat, 200 mSDtfsCounter, 1404 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 1209 SyntacticMatches, 26 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=7, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1111 NumberOfCodeBlocks, 1051 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1630 ConstructedInterpolants, 0 QuantifiedInterpolants, 3342 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1186 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 5494/8091 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Ensures: (((((((((\result == 3) && (4 == \old(n))) || ((2 == \old(n)) && (\result == 1))) || (\old(n) < 1)) || ((3 == \old(n)) && (\result == 2))) || (5 < \old(n))) || ((\result == 1) && (1 == \old(n)))) || ((\result == 5) && (5 == \old(n)))) && ((0 < \old(n)) || (\result == 0))) RESULT: Ultimate proved your program to be correct! [2024-09-15 19:47:17,223 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