./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-1.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 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/sum_15x0-1.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 b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 --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-6908dde-m [2024-09-25 00:09:32,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:09:33,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:09:33,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:09:33,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:09:33,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:09:33,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:09:33,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:09:33,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:09:33,094 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:09:33,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:09:33,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:09:33,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:09:33,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:09:33,097 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:09:33,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:09:33,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:09:33,098 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:09:33,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:09:33,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:09:33,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:09:33,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:09:33,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:09:33,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:09:33,104 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:09:33,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:09:33,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:09:33,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:09:33,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:09:33,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:09:33,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:09:33,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:09:33,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:09:33,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:09:33,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:09:33,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:09:33,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:09:33,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:09:33,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:09:33,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:09:33,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:09:33,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:09:33,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b32326f1b997cecaa031e8ab338eea5ffa634c465fc73ccabccfc7d02b1e5cc1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:09:33,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:09:33,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:09:33,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:09:33,449 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:09:33,450 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:09:33,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-25 00:09:34,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:09:35,096 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:09:35,096 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-25 00:09:35,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1826f2134/f5387cd122ef45e6832896efebf16e36/FLAG09c61212a [2024-09-25 00:09:35,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1826f2134/f5387cd122ef45e6832896efebf16e36 [2024-09-25 00:09:35,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:09:35,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:09:35,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:09:35,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:09:35,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:09:35,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@904a4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35, skipping insertion in model container [2024-09-25 00:09:35,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:09:35,755 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_15x0-1.c[481,494] [2024-09-25 00:09:35,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:09:35,783 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:09:35,795 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_15x0-1.c[481,494] [2024-09-25 00:09:35,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:09:35,811 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:09:35,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35 WrapperNode [2024-09-25 00:09:35,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:09:35,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:09:35,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:09:35,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:09:35,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,836 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:09:35,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:09:35,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:09:35,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:09:35,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:09:35,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,866 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]. [2024-09-25 00:09:35,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:09:35,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:09:35,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:09:35,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:09:35,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (1/1) ... [2024-09-25 00:09:35,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:09:35,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:35,922 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) [2024-09-25 00:09:35,925 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 [2024-09-25 00:09:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:09:36,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:09:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:09:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:09:36,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:09:36,021 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-25 00:09:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-25 00:09:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:09:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:09:36,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:09:36,145 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:09:36,147 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:09:36,300 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-25 00:09:36,300 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:09:36,327 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:09:36,328 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:09:36,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:09:36 BoogieIcfgContainer [2024-09-25 00:09:36,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:09:36,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:09:36,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:09:36,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:09:36,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:09:35" (1/3) ... [2024-09-25 00:09:36,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e431d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:09:36, skipping insertion in model container [2024-09-25 00:09:36,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:09:35" (2/3) ... [2024-09-25 00:09:36,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e431d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:09:36, skipping insertion in model container [2024-09-25 00:09:36,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:09:36" (3/3) ... [2024-09-25 00:09:36,339 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2024-09-25 00:09:36,363 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:09:36,364 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:09:36,456 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:09:36,471 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;@185efb50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:09:36,471 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:09:36,480 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) [2024-09-25 00:09:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-25 00:09:36,491 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:36,492 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:36,493 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:36,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:36,504 INFO L85 PathProgramCache]: Analyzing trace with hash 661201948, now seen corresponding path program 1 times [2024-09-25 00:09:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:36,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050084808] [2024-09-25 00:09:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:36,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-25 00:09:36,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050084808] [2024-09-25 00:09:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050084808] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:09:36,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:09:36,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:09:36,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814344342] [2024-09-25 00:09:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:09:36,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:09:36,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:36,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:09:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:09:36,824 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) [2024-09-25 00:09:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:36,886 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-09-25 00:09:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-25 00:09:36,889 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 [2024-09-25 00:09:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:36,898 INFO L225 Difference]: With dead ends: 30 [2024-09-25 00:09:36,898 INFO L226 Difference]: Without dead ends: 18 [2024-09-25 00:09:36,900 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 [2024-09-25 00:09:36,907 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 [2024-09-25 00:09:36,910 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] [2024-09-25 00:09:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-25 00:09:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-25 00:09:36,950 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) [2024-09-25 00:09:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-09-25 00:09:36,953 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2024-09-25 00:09:36,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:36,954 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-09-25 00:09:36,954 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) [2024-09-25 00:09:36,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-09-25 00:09:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-25 00:09:36,956 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:36,957 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:36,957 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:09:36,957 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:36,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash 36081636, now seen corresponding path program 1 times [2024-09-25 00:09:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:36,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146297126] [2024-09-25 00:09:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:09:37,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146297126] [2024-09-25 00:09:37,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146297126] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101537345] [2024-09-25 00:09:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:37,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:37,153 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) [2024-09-25 00:09:37,158 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-25 00:09:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-25 00:09:37,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-25 00:09:37,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:09:37,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101537345] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:37,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:37,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-09-25 00:09:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804064873] [2024-09-25 00:09:37,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:37,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 00:09:37,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:37,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 00:09:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-25 00:09:37,482 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) [2024-09-25 00:09:37,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:37,540 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-09-25 00:09:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:09:37,541 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 [2024-09-25 00:09:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:37,542 INFO L225 Difference]: With dead ends: 25 [2024-09-25 00:09:37,542 INFO L226 Difference]: Without dead ends: 21 [2024-09-25 00:09:37,542 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 [2024-09-25 00:09:37,543 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 [2024-09-25 00:09:37,544 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] [2024-09-25 00:09:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-25 00:09:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-25 00:09:37,548 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) [2024-09-25 00:09:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-25 00:09:37,549 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-09-25 00:09:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:37,549 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-25 00:09:37,549 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) [2024-09-25 00:09:37,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-25 00:09:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-25 00:09:37,551 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:37,551 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:37,566 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-25 00:09:37,755 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 [2024-09-25 00:09:37,757 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:37,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:37,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1588422884, now seen corresponding path program 2 times [2024-09-25 00:09:37,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:37,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065599852] [2024-09-25 00:09:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:37,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:09:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065599852] [2024-09-25 00:09:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065599852] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908368926] [2024-09-25 00:09:37,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:09:37,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:37,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:37,929 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) [2024-09-25 00:09:37,930 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-25 00:09:37,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:09:37,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:37,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-25 00:09:37,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-25 00:09:38,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-25 00:09:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908368926] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:38,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:38,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-09-25 00:09:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088839179] [2024-09-25 00:09:38,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:38,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-25 00:09:38,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-25 00:09:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-09-25 00:09:38,271 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) [2024-09-25 00:09:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:38,315 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-09-25 00:09:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-25 00:09:38,316 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 [2024-09-25 00:09:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:38,317 INFO L225 Difference]: With dead ends: 28 [2024-09-25 00:09:38,317 INFO L226 Difference]: Without dead ends: 24 [2024-09-25 00:09:38,317 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 [2024-09-25 00:09:38,318 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 [2024-09-25 00:09:38,318 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] [2024-09-25 00:09:38,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-25 00:09:38,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-25 00:09:38,322 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) [2024-09-25 00:09:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-25 00:09:38,323 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2024-09-25 00:09:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:38,323 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-25 00:09:38,323 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) [2024-09-25 00:09:38,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:38,324 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-25 00:09:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-25 00:09:38,325 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:38,325 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:38,339 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-25 00:09:38,525 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 [2024-09-25 00:09:38,526 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:38,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1668608796, now seen corresponding path program 3 times [2024-09-25 00:09:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460663835] [2024-09-25 00:09:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:38,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:09:38,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:38,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460663835] [2024-09-25 00:09:38,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460663835] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299782317] [2024-09-25 00:09:38,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:09:38,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:38,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:38,774 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) [2024-09-25 00:09:38,775 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-25 00:09:38,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-25 00:09:38,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:38,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:09:38,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:09:38,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-25 00:09:39,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299782317] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:39,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:39,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 14 [2024-09-25 00:09:39,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306183711] [2024-09-25 00:09:39,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:39,289 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-25 00:09:39,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-25 00:09:39,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:09:39,290 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) [2024-09-25 00:09:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:39,340 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-25 00:09:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:09:39,340 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 [2024-09-25 00:09:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:39,341 INFO L225 Difference]: With dead ends: 31 [2024-09-25 00:09:39,341 INFO L226 Difference]: Without dead ends: 27 [2024-09-25 00:09:39,341 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 [2024-09-25 00:09:39,342 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 [2024-09-25 00:09:39,342 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] [2024-09-25 00:09:39,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-25 00:09:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-25 00:09:39,346 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) [2024-09-25 00:09:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-25 00:09:39,347 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2024-09-25 00:09:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:39,347 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-25 00:09:39,347 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) [2024-09-25 00:09:39,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:39,348 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-25 00:09:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-25 00:09:39,348 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:39,349 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:39,363 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-25 00:09:39,552 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 [2024-09-25 00:09:39,553 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:39,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:39,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2054436324, now seen corresponding path program 4 times [2024-09-25 00:09:39,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:39,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730660187] [2024-09-25 00:09:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:39,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 00:09:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730660187] [2024-09-25 00:09:39,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730660187] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887356310] [2024-09-25 00:09:39,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:09:39,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:39,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:39,832 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) [2024-09-25 00:09:39,833 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-25 00:09:39,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:09:39,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:39,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-25 00:09:39,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-09-25 00:09:39,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-25 00:09:40,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887356310] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:40,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:40,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-09-25 00:09:40,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302147894] [2024-09-25 00:09:40,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:40,925 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-25 00:09:40,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:40,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-25 00:09:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-09-25 00:09:40,928 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) [2024-09-25 00:09:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:41,060 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-09-25 00:09:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:09:41,061 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 [2024-09-25 00:09:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:41,062 INFO L225 Difference]: With dead ends: 34 [2024-09-25 00:09:41,062 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:09:41,063 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:09:41,063 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:41,064 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:09:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:09:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-09-25 00:09:41,069 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) [2024-09-25 00:09:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-09-25 00:09:41,070 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2024-09-25 00:09:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:41,070 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-09-25 00:09:41,071 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) [2024-09-25 00:09:41,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-09-25 00:09:41,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-25 00:09:41,072 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:41,072 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:41,091 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-25 00:09:41,273 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 [2024-09-25 00:09:41,273 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:41,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:41,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2043660772, now seen corresponding path program 5 times [2024-09-25 00:09:41,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:41,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164250724] [2024-09-25 00:09:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:41,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 00:09:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164250724] [2024-09-25 00:09:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164250724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283006026] [2024-09-25 00:09:41,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:09:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:41,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:41,592 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) [2024-09-25 00:09:41,593 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-25 00:09:41,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-25 00:09:41,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:41,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-25 00:09:41,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-25 00:09:41,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-25 00:09:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283006026] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:43,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 18 [2024-09-25 00:09:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357926071] [2024-09-25 00:09:43,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:43,268 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-25 00:09:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-25 00:09:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-09-25 00:09:43,269 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) [2024-09-25 00:09:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:43,386 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-09-25 00:09:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:09:43,387 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 [2024-09-25 00:09:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:43,387 INFO L225 Difference]: With dead ends: 37 [2024-09-25 00:09:43,388 INFO L226 Difference]: Without dead ends: 33 [2024-09-25 00:09:43,388 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-09-25 00:09:43,389 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:43,389 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:09:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-25 00:09:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-09-25 00:09:43,393 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) [2024-09-25 00:09:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-09-25 00:09:43,393 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2024-09-25 00:09:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:43,394 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-09-25 00:09:43,394 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) [2024-09-25 00:09:43,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-09-25 00:09:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-25 00:09:43,398 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:43,398 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:43,416 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-25 00:09:43,599 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 [2024-09-25 00:09:43,599 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:43,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:43,600 INFO L85 PathProgramCache]: Analyzing trace with hash 776256796, now seen corresponding path program 6 times [2024-09-25 00:09:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:43,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871974951] [2024-09-25 00:09:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:43,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-25 00:09:43,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871974951] [2024-09-25 00:09:43,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871974951] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423728572] [2024-09-25 00:09:43,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:09:43,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:43,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:43,867 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) [2024-09-25 00:09:43,868 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-25 00:09:43,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-25 00:09:43,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:43,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-25 00:09:43,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-09-25 00:09:43,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-25 00:09:45,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423728572] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:45,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:45,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 20 [2024-09-25 00:09:45,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747754594] [2024-09-25 00:09:45,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:45,210 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-25 00:09:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-25 00:09:45,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-09-25 00:09:45,211 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) [2024-09-25 00:09:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:45,281 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-09-25 00:09:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-25 00:09:45,281 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 [2024-09-25 00:09:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:45,282 INFO L225 Difference]: With dead ends: 40 [2024-09-25 00:09:45,282 INFO L226 Difference]: Without dead ends: 36 [2024-09-25 00:09:45,283 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 [2024-09-25 00:09:45,283 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 [2024-09-25 00:09:45,287 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] [2024-09-25 00:09:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-25 00:09:45,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-09-25 00:09:45,291 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) [2024-09-25 00:09:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-09-25 00:09:45,296 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2024-09-25 00:09:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:45,296 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-09-25 00:09:45,296 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) [2024-09-25 00:09:45,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-09-25 00:09:45,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-25 00:09:45,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:45,297 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:45,326 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-25 00:09:45,497 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 [2024-09-25 00:09:45,498 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:45,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:45,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1513830684, now seen corresponding path program 7 times [2024-09-25 00:09:45,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:45,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723453940] [2024-09-25 00:09:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-25 00:09:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:45,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723453940] [2024-09-25 00:09:45,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723453940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:45,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017486246] [2024-09-25 00:09:45,817 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:09:45,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:45,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:45,820 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) [2024-09-25 00:09:45,825 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-25 00:09:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:45,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-25 00:09:45,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-09-25 00:09:45,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-25 00:09:47,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017486246] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:47,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:47,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 22 [2024-09-25 00:09:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930021696] [2024-09-25 00:09:47,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:47,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-25 00:09:47,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:47,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-25 00:09:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2024-09-25 00:09:47,574 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) [2024-09-25 00:09:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:47,664 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-09-25 00:09:47,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-25 00:09:47,664 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 [2024-09-25 00:09:47,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:47,665 INFO L225 Difference]: With dead ends: 43 [2024-09-25 00:09:47,665 INFO L226 Difference]: Without dead ends: 39 [2024-09-25 00:09:47,666 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 [2024-09-25 00:09:47,667 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, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:47,667 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:09:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-25 00:09:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-09-25 00:09:47,671 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) [2024-09-25 00:09:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-25 00:09:47,672 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2024-09-25 00:09:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:47,672 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-25 00:09:47,672 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) [2024-09-25 00:09:47,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-25 00:09:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-25 00:09:47,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:47,673 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:47,688 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-25 00:09:47,877 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 [2024-09-25 00:09:47,878 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:47,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash 296579100, now seen corresponding path program 8 times [2024-09-25 00:09:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:47,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915239123] [2024-09-25 00:09:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:47,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:47,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 00:09:48,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:48,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915239123] [2024-09-25 00:09:48,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915239123] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817503743] [2024-09-25 00:09:48,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:09:48,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:48,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:48,227 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) [2024-09-25 00:09:48,232 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-25 00:09:48,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:09:48,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:48,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-25 00:09:48,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-09-25 00:09:48,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-09-25 00:09:50,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817503743] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:50,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:50,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 24 [2024-09-25 00:09:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617535315] [2024-09-25 00:09:50,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:50,777 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-25 00:09:50,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-25 00:09:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-09-25 00:09:50,778 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) [2024-09-25 00:09:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:50,891 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-09-25 00:09:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-25 00:09:50,892 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 [2024-09-25 00:09:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:50,893 INFO L225 Difference]: With dead ends: 46 [2024-09-25 00:09:50,893 INFO L226 Difference]: Without dead ends: 42 [2024-09-25 00:09:50,893 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-09-25 00:09:50,894 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 [2024-09-25 00:09:50,894 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] [2024-09-25 00:09:50,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-25 00:09:50,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-25 00:09:50,903 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) [2024-09-25 00:09:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-25 00:09:50,904 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2024-09-25 00:09:50,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:50,906 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-25 00:09:50,906 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) [2024-09-25 00:09:50,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-25 00:09:50,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-09-25 00:09:50,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:50,907 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:50,926 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-25 00:09:51,108 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 [2024-09-25 00:09:51,109 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:51,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:51,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1875246108, now seen corresponding path program 9 times [2024-09-25 00:09:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:51,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642877920] [2024-09-25 00:09:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-25 00:09:51,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:51,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642877920] [2024-09-25 00:09:51,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642877920] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:51,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480543701] [2024-09-25 00:09:51,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:09:51,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:51,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:51,520 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) [2024-09-25 00:09:51,521 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-25 00:09:51,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-09-25 00:09:51,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:51,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 00:09:51,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-09-25 00:09:51,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-25 00:09:54,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480543701] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:54,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:54,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 26 [2024-09-25 00:09:54,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907599533] [2024-09-25 00:09:54,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:54,802 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-25 00:09:54,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:54,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-25 00:09:54,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2024-09-25 00:09:54,803 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 00:09:54,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:09:54,908 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-09-25 00:09:54,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-25 00:09:54,908 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 67 [2024-09-25 00:09:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:09:54,909 INFO L225 Difference]: With dead ends: 49 [2024-09-25 00:09:54,909 INFO L226 Difference]: Without dead ends: 45 [2024-09-25 00:09:54,910 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=812, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:09:54,910 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:09:54,910 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 130 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:09:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-25 00:09:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-25 00:09:54,914 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) [2024-09-25 00:09:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-09-25 00:09:54,915 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2024-09-25 00:09:54,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:09:54,915 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-09-25 00:09:54,915 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.125) internal successors, (51), 26 states have internal predecessors, (51), 14 states have call successors, (15), 1 states have call predecessors, (15), 11 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2024-09-25 00:09:54,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-09-25 00:09:54,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-25 00:09:54,916 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:09:54,916 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:09:54,930 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-25 00:09:55,120 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 [2024-09-25 00:09:55,121 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:09:55,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:09:55,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1040850148, now seen corresponding path program 10 times [2024-09-25 00:09:55,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:09:55,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082154715] [2024-09-25 00:09:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:09:55,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:09:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:09:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:09:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:09:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:09:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-25 00:09:55,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:09:55,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082154715] [2024-09-25 00:09:55,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082154715] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:09:55,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410934107] [2024-09-25 00:09:55,598 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:09:55,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:09:55,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:09:55,600 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) [2024-09-25 00:09:55,601 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-25 00:09:55,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:09:55,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:09:55,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-25 00:09:55,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:09:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-09-25 00:09:55,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:09:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-09-25 00:09:59,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410934107] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:09:59,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:09:59,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 28 [2024-09-25 00:09:59,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117730378] [2024-09-25 00:09:59,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:09:59,958 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 00:09:59,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:09:59,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 00:09:59,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-09-25 00:09:59,960 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 00:10:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:00,091 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-09-25 00:10:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-25 00:10:00,091 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) Word has length 73 [2024-09-25 00:10:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:00,092 INFO L225 Difference]: With dead ends: 52 [2024-09-25 00:10:00,092 INFO L226 Difference]: Without dead ends: 48 [2024-09-25 00:10:00,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 146 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 00:10:00,096 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:00,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-25 00:10:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-25 00:10:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-09-25 00:10:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-25 00:10:00,102 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2024-09-25 00:10:00,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:00,102 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-25 00:10:00,102 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 28 states have internal predecessors, (55), 15 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (33), 12 states have call predecessors, (33), 15 states have call successors, (33) [2024-09-25 00:10:00,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-25 00:10:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-25 00:10:00,103 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:00,103 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:00,119 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-25 00:10:00,304 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 [2024-09-25 00:10:00,304 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:00,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash 218071268, now seen corresponding path program 11 times [2024-09-25 00:10:00,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:00,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924850065] [2024-09-25 00:10:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-25 00:10:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924850065] [2024-09-25 00:10:00,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924850065] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448313709] [2024-09-25 00:10:00,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:10:00,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:00,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:00,900 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:00,901 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-25 00:10:01,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-09-25 00:10:01,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:01,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-25 00:10:01,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-09-25 00:10:01,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-25 00:10:06,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448313709] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:06,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:06,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 30 [2024-09-25 00:10:06,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670672660] [2024-09-25 00:10:06,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:06,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-25 00:10:06,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-25 00:10:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2024-09-25 00:10:06,663 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 00:10:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:06,801 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-09-25 00:10:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-25 00:10:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) Word has length 79 [2024-09-25 00:10:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:06,802 INFO L225 Difference]: With dead ends: 55 [2024-09-25 00:10:06,802 INFO L226 Difference]: Without dead ends: 51 [2024-09-25 00:10:06,803 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2024-09-25 00:10:06,804 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:06,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 133 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-25 00:10:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-09-25 00:10:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-09-25 00:10:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-09-25 00:10:06,813 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2024-09-25 00:10:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:06,813 INFO L474 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-09-25 00:10:06,814 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 30 states have internal predecessors, (59), 16 states have call successors, (17), 1 states have call predecessors, (17), 13 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-09-25 00:10:06,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:06,814 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-09-25 00:10:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-25 00:10:06,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:06,814 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:06,835 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-25 00:10:07,015 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:07,015 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:07,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash -313649636, now seen corresponding path program 12 times [2024-09-25 00:10:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:07,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281353709] [2024-09-25 00:10:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:07,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:07,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:08,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:08,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:08,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:08,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-25 00:10:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:08,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281353709] [2024-09-25 00:10:08,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281353709] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:08,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439887655] [2024-09-25 00:10:08,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:10:08,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:08,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:08,193 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:08,203 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-25 00:10:08,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-25 00:10:08,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:08,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-25 00:10:08,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-09-25 00:10:08,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-09-25 00:10:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439887655] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:15,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 32 [2024-09-25 00:10:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814686485] [2024-09-25 00:10:15,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:15,589 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-25 00:10:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-25 00:10:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-09-25 00:10:15,590 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 00:10:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:15,741 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-09-25 00:10:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-25 00:10:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) Word has length 85 [2024-09-25 00:10:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:15,743 INFO L225 Difference]: With dead ends: 58 [2024-09-25 00:10:15,743 INFO L226 Difference]: Without dead ends: 54 [2024-09-25 00:10:15,743 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 13 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2024-09-25 00:10:15,744 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 155 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:15,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 147 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-09-25 00:10:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-09-25 00:10:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-09-25 00:10:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-09-25 00:10:15,749 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2024-09-25 00:10:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:15,749 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-09-25 00:10:15,749 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.1) internal successors, (63), 32 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 14 states have return successors, (39), 14 states have call predecessors, (39), 17 states have call successors, (39) [2024-09-25 00:10:15,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-09-25 00:10:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-09-25 00:10:15,750 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:15,750 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:15,766 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-09-25 00:10:15,951 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-25 00:10:15,951 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:15,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:15,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1407532516, now seen corresponding path program 13 times [2024-09-25 00:10:15,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:15,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128781610] [2024-09-25 00:10:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-25 00:10:16,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128781610] [2024-09-25 00:10:16,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128781610] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:16,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784851090] [2024-09-25 00:10:16,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:10:16,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:16,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:16,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:16,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-25 00:10:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:16,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-25 00:10:16,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-09-25 00:10:17,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-09-25 00:10:25,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784851090] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:25,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:25,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2024-09-25 00:10:25,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884291397] [2024-09-25 00:10:25,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:25,662 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-25 00:10:25,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-25 00:10:25,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-09-25 00:10:25,663 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 00:10:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:25,804 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-09-25 00:10:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-25 00:10:25,804 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) Word has length 91 [2024-09-25 00:10:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:25,805 INFO L225 Difference]: With dead ends: 61 [2024-09-25 00:10:25,805 INFO L226 Difference]: Without dead ends: 57 [2024-09-25 00:10:25,806 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=694, Invalid=1468, Unknown=0, NotChecked=0, Total=2162 [2024-09-25 00:10:25,806 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:25,807 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 147 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-09-25 00:10:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-09-25 00:10:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-09-25 00:10:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-09-25 00:10:25,817 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2024-09-25 00:10:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:25,817 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-09-25 00:10:25,817 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.09375) internal successors, (67), 34 states have internal predecessors, (67), 18 states have call successors, (19), 1 states have call predecessors, (19), 15 states have return successors, (42), 15 states have call predecessors, (42), 18 states have call successors, (42) [2024-09-25 00:10:25,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-09-25 00:10:25,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-25 00:10:25,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:25,818 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:25,833 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-25 00:10:26,022 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-25 00:10:26,023 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:26,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1575356700, now seen corresponding path program 14 times [2024-09-25 00:10:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:26,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427813576] [2024-09-25 00:10:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:26,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-25 00:10:26,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427813576] [2024-09-25 00:10:26,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427813576] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:26,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857582805] [2024-09-25 00:10:26,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:10:26,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:26,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:26,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:26,779 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-25 00:10:27,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:10:27,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:27,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-25 00:10:27,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-09-25 00:10:27,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:10:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-25 00:10:38,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857582805] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:10:38,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:10:38,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 33] total 35 [2024-09-25 00:10:38,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276854186] [2024-09-25 00:10:38,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:10:38,072 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-25 00:10:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:38,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-25 00:10:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:10:38,074 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-25 00:10:38,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:38,248 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-09-25 00:10:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-25 00:10:38,249 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) Word has length 97 [2024-09-25 00:10:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:38,249 INFO L225 Difference]: With dead ends: 64 [2024-09-25 00:10:38,249 INFO L226 Difference]: Without dead ends: 60 [2024-09-25 00:10:38,251 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=785, Invalid=1567, Unknown=0, NotChecked=0, Total=2352 [2024-09-25 00:10:38,252 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 179 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:38,254 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 148 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:10:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-25 00:10:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-09-25 00:10:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-09-25 00:10:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-09-25 00:10:38,261 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2024-09-25 00:10:38,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:38,261 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-09-25 00:10:38,262 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 35 states have internal predecessors, (70), 18 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2024-09-25 00:10:38,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-09-25 00:10:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-09-25 00:10:38,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:10:38,263 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:10:38,278 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-25 00:10:38,467 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-25 00:10:38,468 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:10:38,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash 12270308, now seen corresponding path program 15 times [2024-09-25 00:10:38,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:10:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661632138] [2024-09-25 00:10:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:10:38,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:10:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:38,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:10:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:38,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-25 00:10:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:39,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:39,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:39,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:39,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-25 00:10:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:10:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-09-25 00:10:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:10:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661632138] [2024-09-25 00:10:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661632138] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:10:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749857705] [2024-09-25 00:10:40,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:10:40,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:10:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:10:40,973 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-25 00:10:40,975 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-25 00:10:41,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-09-25 00:10:41,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:10:41,595 WARN L260 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-09-25 00:10:41,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:10:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-09-25 00:10:41,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-25 00:10:41,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749857705] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:10:41,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-25 00:10:41,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2024-09-25 00:10:41,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590819359] [2024-09-25 00:10:41,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:10:41,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-25 00:10:41,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:10:41,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-25 00:10:41,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:10:41,828 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:10:41,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:10:41,901 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-09-25 00:10:41,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-25 00:10:41,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 103 [2024-09-25 00:10:41,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:10:41,905 INFO L225 Difference]: With dead ends: 60 [2024-09-25 00:10:41,905 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:10:41,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-25 00:10:41,906 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-25 00:10:41,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-25 00:10:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:10:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:10:41,906 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) [2024-09-25 00:10:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:10:41,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2024-09-25 00:10:41,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:10:41,906 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:10:41,907 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-25 00:10:41,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:10:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:10:41,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:10:41,913 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:10:41,938 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-25 00:10:42,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-25 00:10:42,117 INFO L408 BasicCegarLoop]: Path program histogram: [15, 1] [2024-09-25 00:10:42,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:10:42,512 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:10:42,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:10:42 BoogieIcfgContainer [2024-09-25 00:10:42,525 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:10:42,525 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:10:42,525 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:10:42,525 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:10:42,526 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:09:36" (3/4) ... [2024-09-25 00:10:42,527 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:10:42,572 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:10:42,572 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:10:42,572 INFO L158 Benchmark]: Toolchain (without parser) took 67079.70ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 924.8MB). Free memory was 142.8MB in the beginning and 540.8MB in the end (delta: -398.0MB). Peak memory consumption was 526.5MB. Max. memory is 16.1GB. [2024-09-25 00:10:42,574 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:10:42,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.96ms. Allocated memory is still 188.7MB. Free memory was 142.8MB in the beginning and 131.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:10:42,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.37ms. Allocated memory is still 188.7MB. Free memory was 131.6MB in the beginning and 131.0MB in the end (delta: 658.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:10:42,574 INFO L158 Benchmark]: Boogie Preprocessor took 46.30ms. Allocated memory is still 188.7MB. Free memory was 131.0MB in the beginning and 128.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:10:42,574 INFO L158 Benchmark]: RCFGBuilder took 446.27ms. Allocated memory is still 188.7MB. Free memory was 128.9MB in the beginning and 149.3MB in the end (delta: -20.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-25 00:10:42,575 INFO L158 Benchmark]: TraceAbstraction took 66192.80ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 924.8MB). Free memory was 148.4MB in the beginning and 542.9MB in the end (delta: -394.5MB). Peak memory consumption was 533.1MB. Max. memory is 16.1GB. [2024-09-25 00:10:42,575 INFO L158 Benchmark]: Witness Printer took 46.95ms. Allocated memory is still 1.1GB. Free memory was 542.9MB in the beginning and 540.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:10:42,579 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.96ms. Allocated memory is still 188.7MB. Free memory was 142.8MB in the beginning and 131.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.37ms. Allocated memory is still 188.7MB. Free memory was 131.6MB in the beginning and 131.0MB in the end (delta: 658.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.30ms. Allocated memory is still 188.7MB. Free memory was 131.0MB in the beginning and 128.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.27ms. Allocated memory is still 188.7MB. Free memory was 128.9MB in the beginning and 149.3MB in the end (delta: -20.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 66192.80ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 924.8MB). Free memory was 148.4MB in the beginning and 542.9MB in the end (delta: -394.5MB). Peak memory consumption was 533.1MB. Max. memory is 16.1GB. * Witness Printer took 46.95ms. Allocated memory is still 1.1GB. Free memory was 542.9MB in the beginning and 540.8MB 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: 65.7s, OverallIterations: 16, TraceHistogramMax: 16, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1144 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 993 mSDsluCounter, 1525 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1333 mSDsCounter, 428 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1223 IncrementalHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 428 mSolverCounterUnsat, 192 mSDtfsCounter, 1223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2324 GetRequests, 1792 SyntacticMatches, 120 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5371 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=15, InterpolantAutomatonStates: 188, 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, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 57.2s InterpolantComputationTime, 1843 NumberOfCodeBlocks, 1843 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 2610 ConstructedInterpolants, 0 QuantifiedInterpolants, 7780 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2970 ConjunctsInSsa, 461 ConjunctsInUnsatCore, 45 InterpolantComputations, 2 PerfectInterpolantSequences, 5060/10830 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) n + m)) RESULT: Ultimate proved your program to be correct! [2024-09-25 00:10:42,618 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