./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_10x0-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_10x0-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68d0cd7d514b491e1404560081afc21267eb1b3dae98cdb9832a8634357d65e4 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 16:41:41,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 16:41:41,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 16:41:41,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 16:41:41,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 16:41:41,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 16:41:41,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 16:41:41,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 16:41:41,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 16:41:41,646 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 16:41:41,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 16:41:41,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 16:41:41,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 16:41:41,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 16:41:41,647 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 16:41:41,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 16:41:41,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 16:41:41,648 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 16:41:41,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 16:41:41,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 16:41:41,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 16:41:41,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 16:41:41,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 16:41:41,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 16:41:41,650 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 16:41:41,650 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 16:41:41,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 16:41:41,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 16:41:41,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 16:41:41,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 16:41:41,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 16:41:41,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 16:41:41,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:41:41,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 16:41:41,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 16:41:41,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 16:41:41,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 16:41:41,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 16:41:41,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 16:41:41,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 16:41:41,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 16:41:41,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 16:41:41,654 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68d0cd7d514b491e1404560081afc21267eb1b3dae98cdb9832a8634357d65e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 16:41:41,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 16:41:41,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 16:41:41,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 16:41:41,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 16:41:41,902 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 16:41:41,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2024-09-18 16:41:43,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 16:41:43,406 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 16:41:43,406 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2024-09-18 16:41:43,413 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/280fe4445/96f2b21ed3f64f049d18e32cb4bd182e/FLAG31edd8e6d [2024-09-18 16:41:43,422 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/280fe4445/96f2b21ed3f64f049d18e32cb4bd182e [2024-09-18 16:41:43,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 16:41:43,425 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 16:41:43,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 16:41:43,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 16:41:43,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 16:41:43,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27858da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43, skipping insertion in model container [2024-09-18 16:41:43,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 16:41:43,607 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/sum_10x0-1.c[481,494] [2024-09-18 16:41:43,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:41:43,623 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 16:41:43,634 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/sum_10x0-1.c[481,494] [2024-09-18 16:41:43,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 16:41:43,650 INFO L204 MainTranslator]: Completed translation [2024-09-18 16:41:43,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43 WrapperNode [2024-09-18 16:41:43,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 16:41:43,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 16:41:43,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 16:41:43,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 16:41:43,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,669 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 16:41:43,669 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 16:41:43,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 16:41:43,670 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 16:41:43,670 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 16:41:43,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,688 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]. [2024-09-18 16:41:43,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 16:41:43,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 16:41:43,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 16:41:43,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 16:41:43,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (1/1) ... [2024-09-18 16:41:43,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 16:41:43,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:43,725 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) [2024-09-18 16:41:43,730 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 [2024-09-18 16:41:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 16:41:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 16:41:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 16:41:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 16:41:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 16:41:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-18 16:41:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-18 16:41:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 16:41:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 16:41:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 16:41:43,838 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 16:41:43,840 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 16:41:43,925 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-18 16:41:43,925 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 16:41:43,941 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 16:41:43,942 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-18 16:41:43,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:41:43 BoogieIcfgContainer [2024-09-18 16:41:43,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 16:41:43,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 16:41:43,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 16:41:43,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 16:41:43,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 04:41:43" (1/3) ... [2024-09-18 16:41:43,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a8a635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:41:43, skipping insertion in model container [2024-09-18 16:41:43,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 04:41:43" (2/3) ... [2024-09-18 16:41:43,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a8a635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 04:41:43, skipping insertion in model container [2024-09-18 16:41:43,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:41:43" (3/3) ... [2024-09-18 16:41:43,949 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2024-09-18 16:41:43,962 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 16:41:43,963 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 16:41:44,008 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 16:41:44,014 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;@7266b8b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 16:41:44,014 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 16:41:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-18 16:41:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-18 16:41:44,029 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:44,030 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:44,030 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:44,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-18 16:41:44,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:44,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702601110] [2024-09-18 16:41:44,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:44,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 16:41:44,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702601110] [2024-09-18 16:41:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702601110] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 16:41:44,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 16:41:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 16:41:44,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863302223] [2024-09-18 16:41:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 16:41:44,290 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 16:41:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 16:41:44,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 16:41:44,311 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-18 16:41:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:44,364 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-18 16:41:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 16:41:44,370 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 [2024-09-18 16:41:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:44,378 INFO L225 Difference]: With dead ends: 30 [2024-09-18 16:41:44,381 INFO L226 Difference]: Without dead ends: 18 [2024-09-18 16:41:44,383 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 [2024-09-18 16:41:44,388 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:44,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 48 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:41:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-18 16:41:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-18 16:41:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-18 16:41:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-18 16:41:44,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-18 16:41:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:44,456 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-18 16:41:44,456 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) [2024-09-18 16:41:44,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-18 16:41:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-18 16:41:44,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:44,458 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:44,459 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 16:41:44,459 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:44,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-18 16:41:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:44,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201566682] [2024-09-18 16:41:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-18 16:41:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:44,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201566682] [2024-09-18 16:41:44,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201566682] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:44,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181631992] [2024-09-18 16:41:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:44,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:44,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:44,771 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) [2024-09-18 16:41:44,778 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 16:41:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:44,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-18 16:41:44,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-18 16:41:44,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-18 16:41:45,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181631992] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:45,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:45,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-18 16:41:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369553702] [2024-09-18 16:41:45,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:45,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-18 16:41:45,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-18 16:41:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-18 16:41:45,036 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 16:41:45,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:45,101 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-18 16:41:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-18 16:41:45,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 19 [2024-09-18 16:41:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:45,102 INFO L225 Difference]: With dead ends: 25 [2024-09-18 16:41:45,102 INFO L226 Difference]: Without dead ends: 21 [2024-09-18 16:41:45,103 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-09-18 16:41:45,104 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:45,104 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:41:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-18 16:41:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-18 16:41:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-18 16:41:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-18 16:41:45,109 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-18 16:41:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:45,109 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-18 16:41:45,109 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 6 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-18 16:41:45,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-18 16:41:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-18 16:41:45,110 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:45,111 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:45,126 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-18 16:41:45,311 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:45,311 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:45,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-18 16:41:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459923241] [2024-09-18 16:41:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:45,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:45,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:45,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:45,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:45,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-18 16:41:45,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459923241] [2024-09-18 16:41:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459923241] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240788817] [2024-09-18 16:41:45,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:41:45,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:45,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:45,512 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) [2024-09-18 16:41:45,513 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 16:41:45,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:41:45,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:45,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-18 16:41:45,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-18 16:41:45,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-18 16:41:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240788817] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:45,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-18 16:41:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432766038] [2024-09-18 16:41:45,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:45,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-18 16:41:45,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-18 16:41:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-18 16:41:45,874 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-18 16:41:45,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:45,912 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-18 16:41:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-18 16:41:45,913 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 25 [2024-09-18 16:41:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:45,913 INFO L225 Difference]: With dead ends: 28 [2024-09-18 16:41:45,914 INFO L226 Difference]: Without dead ends: 24 [2024-09-18 16:41:45,914 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-09-18 16:41:45,915 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:45,915 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:41:45,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-18 16:41:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-18 16:41:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-18 16:41:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-18 16:41:45,919 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-18 16:41:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:45,920 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-18 16:41:45,920 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 12 states have internal predecessors, (23), 7 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-09-18 16:41:45,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-18 16:41:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-18 16:41:45,921 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:45,921 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:45,933 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 16:41:46,124 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:46,125 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:46,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-18 16:41:46,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:46,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810159377] [2024-09-18 16:41:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:46,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:46,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:46,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:46,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:46,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:41:46,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810159377] [2024-09-18 16:41:46,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810159377] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135844627] [2024-09-18 16:41:46,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:41:46,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:46,254 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) [2024-09-18 16:41:46,254 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 16:41:46,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-18 16:41:46,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:46,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-18 16:41:46,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:41:46,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-18 16:41:46,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135844627] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:46,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:46,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-18 16:41:46,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465304972] [2024-09-18 16:41:46,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:46,666 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-18 16:41:46,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:46,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-18 16:41:46,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-18 16:41:46,667 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-18 16:41:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:46,723 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-18 16:41:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-18 16:41:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) Word has length 31 [2024-09-18 16:41:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:46,724 INFO L225 Difference]: With dead ends: 31 [2024-09-18 16:41:46,725 INFO L226 Difference]: Without dead ends: 27 [2024-09-18 16:41:46,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-09-18 16:41:46,726 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:46,728 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:41:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-18 16:41:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-18 16:41:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2024-09-18 16:41:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-18 16:41:46,736 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-18 16:41:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:46,736 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-18 16:41:46,737 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 14 states have internal predecessors, (27), 8 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (12), 5 states have call predecessors, (12), 8 states have call successors, (12) [2024-09-18 16:41:46,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-18 16:41:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-18 16:41:46,738 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:46,738 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:46,751 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 16:41:46,938 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:46,939 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:46,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-18 16:41:46,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:46,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084526351] [2024-09-18 16:41:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:46,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:47,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:47,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:47,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:47,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:47,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:47,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-18 16:41:47,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:47,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084526351] [2024-09-18 16:41:47,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084526351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:47,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880075135] [2024-09-18 16:41:47,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:41:47,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:47,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:47,143 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) [2024-09-18 16:41:47,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 16:41:47,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:41:47,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:47,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-18 16:41:47,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-18 16:41:47,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-18 16:41:47,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880075135] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:47,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:47,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-18 16:41:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275591321] [2024-09-18 16:41:47,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:47,749 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-18 16:41:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-18 16:41:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-18 16:41:47,750 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-18 16:41:47,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:47,800 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-18 16:41:47,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-18 16:41:47,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 37 [2024-09-18 16:41:47,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:47,801 INFO L225 Difference]: With dead ends: 34 [2024-09-18 16:41:47,801 INFO L226 Difference]: Without dead ends: 30 [2024-09-18 16:41:47,802 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-18 16:41:47,802 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:47,803 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:41:47,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-18 16:41:47,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-18 16:41:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-18 16:41:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-18 16:41:47,807 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-18 16:41:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:47,807 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-18 16:41:47,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 16 states have internal predecessors, (31), 9 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-09-18 16:41:47,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-18 16:41:47,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-18 16:41:47,808 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:47,809 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:47,821 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 16:41:48,012 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:48,013 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:48,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-18 16:41:48,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:48,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724895998] [2024-09-18 16:41:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:48,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-18 16:41:48,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:48,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724895998] [2024-09-18 16:41:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724895998] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67595493] [2024-09-18 16:41:48,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 16:41:48,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:48,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:48,231 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) [2024-09-18 16:41:48,235 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 16:41:48,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-18 16:41:48,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:48,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-18 16:41:48,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-18 16:41:48,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-18 16:41:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67595493] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:49,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:49,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-18 16:41:49,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636215555] [2024-09-18 16:41:49,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:49,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-18 16:41:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-18 16:41:49,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-18 16:41:49,103 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-18 16:41:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:49,170 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-18 16:41:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-18 16:41:49,170 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 43 [2024-09-18 16:41:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:49,171 INFO L225 Difference]: With dead ends: 37 [2024-09-18 16:41:49,171 INFO L226 Difference]: Without dead ends: 33 [2024-09-18 16:41:49,172 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-18 16:41:49,172 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:49,172 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:41:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-18 16:41:49,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-18 16:41:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-18 16:41:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-18 16:41:49,180 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-18 16:41:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:49,181 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-18 16:41:49,181 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.1875) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-09-18 16:41:49,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-18 16:41:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-18 16:41:49,182 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:49,182 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:49,196 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 16:41:49,386 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-18 16:41:49,387 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:49,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:49,387 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-18 16:41:49,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:49,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166264578] [2024-09-18 16:41:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:49,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-18 16:41:49,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166264578] [2024-09-18 16:41:49,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166264578] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916694037] [2024-09-18 16:41:49,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 16:41:49,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:49,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:49,652 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) [2024-09-18 16:41:49,655 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 16:41:49,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-18 16:41:49,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:49,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-18 16:41:49,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-18 16:41:49,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-18 16:41:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916694037] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:51,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:51,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-18 16:41:51,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825442471] [2024-09-18 16:41:51,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:51,071 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-18 16:41:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-18 16:41:51,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-18 16:41:51,072 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-18 16:41:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:51,148 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-18 16:41:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-18 16:41:51,149 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 49 [2024-09-18 16:41:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:51,150 INFO L225 Difference]: With dead ends: 40 [2024-09-18 16:41:51,150 INFO L226 Difference]: Without dead ends: 36 [2024-09-18 16:41:51,150 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2024-09-18 16:41:51,151 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:51,151 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 97 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:41:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-18 16:41:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-18 16:41:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2024-09-18 16:41:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-18 16:41:51,155 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-18 16:41:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:51,156 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-18 16:41:51,156 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 20 states have internal predecessors, (39), 11 states have call successors, (12), 1 states have call predecessors, (12), 8 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-09-18 16:41:51,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-18 16:41:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-18 16:41:51,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:51,157 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:51,169 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-18 16:41:51,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:51,358 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:51,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-18 16:41:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057477637] [2024-09-18 16:41:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-18 16:41:51,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057477637] [2024-09-18 16:41:51,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057477637] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:51,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591057499] [2024-09-18 16:41:51,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 16:41:51,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:51,617 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) [2024-09-18 16:41:51,618 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 16:41:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:51,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-18 16:41:51,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-18 16:41:51,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-18 16:41:53,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591057499] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:53,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:53,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-18 16:41:53,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046158873] [2024-09-18 16:41:53,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:53,348 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-18 16:41:53,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:53,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-18 16:41:53,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-18 16:41:53,349 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-18 16:41:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:53,454 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-18 16:41:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 16:41:53,454 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 55 [2024-09-18 16:41:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:53,455 INFO L225 Difference]: With dead ends: 43 [2024-09-18 16:41:53,455 INFO L226 Difference]: Without dead ends: 39 [2024-09-18 16:41:53,456 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2024-09-18 16:41:53,456 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:53,456 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:53,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-18 16:41:53,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-18 16:41:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-09-18 16:41:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-18 16:41:53,460 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-18 16:41:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:53,461 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-18 16:41:53,461 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.15) internal successors, (43), 22 states have internal predecessors, (43), 12 states have call successors, (13), 1 states have call predecessors, (13), 9 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2024-09-18 16:41:53,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-18 16:41:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-18 16:41:53,462 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:53,462 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:53,475 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-18 16:41:53,666 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:53,667 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:53,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-18 16:41:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:53,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107804506] [2024-09-18 16:41:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:53,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:53,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:53,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:53,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:53,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:53,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:53,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:53,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:54,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:54,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:54,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-18 16:41:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107804506] [2024-09-18 16:41:54,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107804506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049530545] [2024-09-18 16:41:54,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 16:41:54,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:54,092 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:54,099 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 16:41:54,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 16:41:54,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:54,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-18 16:41:54,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-18 16:41:54,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:41:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-18 16:41:56,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049530545] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:41:56,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:41:56,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-18 16:41:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184125019] [2024-09-18 16:41:56,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:41:56,600 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-18 16:41:56,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:41:56,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-18 16:41:56,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-18 16:41:56,602 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-18 16:41:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:41:56,712 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-18 16:41:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-18 16:41:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) Word has length 61 [2024-09-18 16:41:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:41:56,713 INFO L225 Difference]: With dead ends: 46 [2024-09-18 16:41:56,713 INFO L226 Difference]: Without dead ends: 42 [2024-09-18 16:41:56,714 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-18 16:41:56,714 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 119 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 16:41:56,715 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 109 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 16:41:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-18 16:41:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-18 16:41:56,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-09-18 16:41:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-18 16:41:56,719 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-18 16:41:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:41:56,720 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-18 16:41:56,720 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 24 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 10 states have return successors, (27), 10 states have call predecessors, (27), 13 states have call successors, (27) [2024-09-18 16:41:56,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-18 16:41:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-18 16:41:56,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:41:56,721 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:41:56,733 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-18 16:41:56,925 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:56,926 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:41:56,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:41:56,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-18 16:41:56,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:41:56,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153048073] [2024-09-18 16:41:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:41:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:41:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:56,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:41:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:41:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:41:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:41:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-18 16:41:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:41:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153048073] [2024-09-18 16:41:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153048073] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:41:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365131704] [2024-09-18 16:41:57,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 16:41:57,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:41:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:41:57,398 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:41:57,399 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-18 16:41:57,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-18 16:41:57,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:41:57,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-18 16:41:57,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:41:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-18 16:41:57,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:42:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-18 16:42:00,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365131704] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:42:00,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:42:00,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 25 [2024-09-18 16:42:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329600245] [2024-09-18 16:42:00,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:42:00,588 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-18 16:42:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:42:00,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-18 16:42:00,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2024-09-18 16:42:00,589 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2024-09-18 16:42:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:42:00,687 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-18 16:42:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-18 16:42:00,687 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) Word has length 67 [2024-09-18 16:42:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:42:00,688 INFO L225 Difference]: With dead ends: 49 [2024-09-18 16:42:00,688 INFO L226 Difference]: Without dead ends: 45 [2024-09-18 16:42:00,689 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 11 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=747, Unknown=0, NotChecked=0, Total=1122 [2024-09-18 16:42:00,689 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 16:42:00,689 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 109 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 16:42:00,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-18 16:42:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-18 16:42:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-09-18 16:42:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-18 16:42:00,694 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-18 16:42:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:42:00,694 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-18 16:42:00,694 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 13 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (29), 11 states have call predecessors, (29), 13 states have call successors, (29) [2024-09-18 16:42:00,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-18 16:42:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-18 16:42:00,695 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 16:42:00,695 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 16:42:00,708 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-18 16:42:00,898 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-18 16:42:00,899 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 16:42:00,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-18 16:42:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 16:42:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503801877] [2024-09-18 16:42:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 16:42:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 16:42:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 16:42:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-18 16:42:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:01,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:02,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:02,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:02,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:02,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-18 16:42:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 16:42:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-09-18 16:42:02,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 16:42:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503801877] [2024-09-18 16:42:02,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503801877] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 16:42:02,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071499433] [2024-09-18 16:42:02,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 16:42:02,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 16:42:02,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 16:42:02,178 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 16:42:02,182 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-18 16:42:02,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 16:42:02,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 16:42:02,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-18 16:42:02,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 16:42:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 19 proven. 155 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-18 16:42:02,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 16:42:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-09-18 16:42:05,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071499433] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 16:42:05,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 16:42:05,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 29, 29] total 41 [2024-09-18 16:42:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095650865] [2024-09-18 16:42:05,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 16:42:05,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-18 16:42:05,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 16:42:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-18 16:42:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1544, Unknown=0, NotChecked=0, Total=1640 [2024-09-18 16:42:05,140 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 7 states have call successors, (8), 1 states have call predecessors, (8), 15 states have return successors, (16), 15 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-18 16:42:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 16:42:06,125 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-09-18 16:42:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-18 16:42:06,126 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 7 states have call successors, (8), 1 states have call predecessors, (8), 15 states have return successors, (16), 15 states have call predecessors, (16), 7 states have call successors, (16) Word has length 73 [2024-09-18 16:42:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 16:42:06,127 INFO L225 Difference]: With dead ends: 48 [2024-09-18 16:42:06,127 INFO L226 Difference]: Without dead ends: 0 [2024-09-18 16:42:06,130 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2024-09-18 16:42:06,130 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 16:42:06,130 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 471 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 16:42:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-18 16:42:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-18 16:42:06,131 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) [2024-09-18 16:42:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-18 16:42:06,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2024-09-18 16:42:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 16:42:06,131 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-18 16:42:06,131 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 27 states have internal predecessors, (47), 7 states have call successors, (8), 1 states have call predecessors, (8), 15 states have return successors, (16), 15 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-18 16:42:06,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 16:42:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-18 16:42:06,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-18 16:42:06,134 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-18 16:42:06,150 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-18 16:42:06,335 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-18 16:42:06,338 INFO L408 BasicCegarLoop]: Path program histogram: [10, 1] [2024-09-18 16:42:06,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-18 16:42:06,712 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-18 16:42:06,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 04:42:06 BoogieIcfgContainer [2024-09-18 16:42:06,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-18 16:42:06,725 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-18 16:42:06,726 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-18 16:42:06,726 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-18 16:42:06,726 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 04:41:43" (3/4) ... [2024-09-18 16:42:06,728 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-18 16:42:06,770 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-18 16:42:06,771 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-18 16:42:06,771 INFO L158 Benchmark]: Toolchain (without parser) took 23345.83ms. Allocated memory was 151.0MB in the beginning and 478.2MB in the end (delta: 327.2MB). Free memory was 80.1MB in the beginning and 387.8MB in the end (delta: -307.7MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2024-09-18 16:42:06,771 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:42:06,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.35ms. Allocated memory is still 151.0MB. Free memory was 79.9MB in the beginning and 69.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-18 16:42:06,772 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.14ms. Allocated memory is still 151.0MB. Free memory was 68.9MB in the beginning and 68.0MB in the end (delta: 904.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-18 16:42:06,772 INFO L158 Benchmark]: Boogie Preprocessor took 24.73ms. Allocated memory is still 151.0MB. Free memory was 68.0MB in the beginning and 66.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:42:06,772 INFO L158 Benchmark]: RCFGBuilder took 242.61ms. Allocated memory was 151.0MB in the beginning and 228.6MB in the end (delta: 77.6MB). Free memory was 66.3MB in the beginning and 193.5MB in the end (delta: -127.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-09-18 16:42:06,773 INFO L158 Benchmark]: TraceAbstraction took 22781.27ms. Allocated memory was 228.6MB in the beginning and 478.2MB in the end (delta: 249.6MB). Free memory was 192.4MB in the beginning and 389.9MB in the end (delta: -197.5MB). Peak memory consumption was 279.9MB. Max. memory is 16.1GB. [2024-09-18 16:42:06,773 INFO L158 Benchmark]: Witness Printer took 45.14ms. Allocated memory is still 478.2MB. Free memory was 389.9MB in the beginning and 387.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-18 16:42:06,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.35ms. Allocated memory is still 151.0MB. Free memory was 79.9MB in the beginning and 69.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.14ms. Allocated memory is still 151.0MB. Free memory was 68.9MB in the beginning and 68.0MB in the end (delta: 904.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.73ms. Allocated memory is still 151.0MB. Free memory was 68.0MB in the beginning and 66.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.61ms. Allocated memory was 151.0MB in the beginning and 228.6MB in the end (delta: 77.6MB). Free memory was 66.3MB in the beginning and 193.5MB in the end (delta: -127.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 22781.27ms. Allocated memory was 228.6MB in the beginning and 478.2MB in the end (delta: 249.6MB). Free memory was 192.4MB in the beginning and 389.9MB in the end (delta: -197.5MB). Peak memory consumption was 279.9MB. Max. memory is 16.1GB. * Witness Printer took 45.14ms. Allocated memory is still 478.2MB. Free memory was 389.9MB in the beginning and 387.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.3s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 562 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 487 mSDsluCounter, 1246 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1105 mSDsCounter, 222 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1477 IncrementalHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 222 mSolverCounterUnsat, 141 mSDtfsCounter, 1477 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 935 SyntacticMatches, 55 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 933 NumberOfCodeBlocks, 927 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1362 ConstructedInterpolants, 0 QuantifiedInterpolants, 4067 SizeOfPredicates, 57 NumberOfNonLiveVariables, 1491 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 31 InterpolantComputations, 1 PerfectInterpolantSequences, 1646/3630 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (\result == ((long long) \old(n) + \old(m))) RESULT: Ultimate proved your program to be correct! [2024-09-18 16:42:06,807 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