./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Ackermann04.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/Ackermann04.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 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 --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 00:04:26,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-25 00:04:26,656 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-25 00:04:26,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-25 00:04:26,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-25 00:04:26,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-25 00:04:26,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-25 00:04:26,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-25 00:04:26,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-25 00:04:26,697 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-25 00:04:26,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-25 00:04:26,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-25 00:04:26,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-25 00:04:26,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-25 00:04:26,701 INFO L153 SettingsManager]: * Use SBE=true [2024-09-25 00:04:26,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-25 00:04:26,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-25 00:04:26,702 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-25 00:04:26,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-25 00:04:26,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-25 00:04:26,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-25 00:04:26,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-25 00:04:26,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-25 00:04:26,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-25 00:04:26,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-25 00:04:26,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-25 00:04:26,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-25 00:04:26,706 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-25 00:04:26,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-25 00:04:26,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-25 00:04:26,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-25 00:04:26,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-25 00:04:26,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:26,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-25 00:04:26,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-25 00:04:26,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-25 00:04:26,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-25 00:04:26,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-25 00:04:26,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-25 00:04:26,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-25 00:04:26,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-25 00:04:26,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-25 00:04:26,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-25 00:04:26,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-25 00:04:26,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-25 00:04:26,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-25 00:04:26,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-25 00:04:26,994 INFO L274 PluginConnector]: CDTParser initialized [2024-09-25 00:04:26,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann04.c [2024-09-25 00:04:28,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-25 00:04:28,792 INFO L384 CDTParser]: Found 1 translation units. [2024-09-25 00:04:28,793 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann04.c [2024-09-25 00:04:28,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0c0706224/9904d041c1fe45939b898b6257fa639a/FLAG0aee74806 [2024-09-25 00:04:29,183 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0c0706224/9904d041c1fe45939b898b6257fa639a [2024-09-25 00:04:29,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-25 00:04:29,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-25 00:04:29,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:29,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-25 00:04:29,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-25 00:04:29,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a37e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29, skipping insertion in model container [2024-09-25 00:04:29,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,217 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-25 00:04:29,405 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/Ackermann04.c[1166,1179] [2024-09-25 00:04:29,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:29,431 INFO L200 MainTranslator]: Completed pre-run [2024-09-25 00:04:29,448 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/Ackermann04.c[1166,1179] [2024-09-25 00:04:29,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-25 00:04:29,474 INFO L204 MainTranslator]: Completed translation [2024-09-25 00:04:29,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29 WrapperNode [2024-09-25 00:04:29,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-25 00:04:29,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:29,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-25 00:04:29,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-25 00:04:29,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,497 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-25 00:04:29,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-25 00:04:29,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-25 00:04:29,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-25 00:04:29,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-25 00:04:29,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,538 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 00:04:29,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,541 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-25 00:04:29,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-25 00:04:29,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-25 00:04:29,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-25 00:04:29,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (1/1) ... [2024-09-25 00:04:29,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-25 00:04:29,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:29,585 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 00:04:29,592 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 00:04:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-25 00:04:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-25 00:04:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-25 00:04:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-25 00:04:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-25 00:04:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-25 00:04:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-25 00:04:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-25 00:04:29,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-25 00:04:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-25 00:04:29,711 INFO L241 CfgBuilder]: Building ICFG [2024-09-25 00:04:29,715 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-25 00:04:29,904 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-25 00:04:29,904 INFO L290 CfgBuilder]: Performing block encoding [2024-09-25 00:04:29,934 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-25 00:04:29,935 INFO L317 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-25 00:04:29,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:29 BoogieIcfgContainer [2024-09-25 00:04:29,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-25 00:04:29,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-25 00:04:29,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-25 00:04:29,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-25 00:04:29,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:29" (1/3) ... [2024-09-25 00:04:29,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ebbc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:29, skipping insertion in model container [2024-09-25 00:04:29,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:29" (2/3) ... [2024-09-25 00:04:29,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ebbc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:29, skipping insertion in model container [2024-09-25 00:04:29,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:29" (3/3) ... [2024-09-25 00:04:29,947 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2024-09-25 00:04:29,981 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-25 00:04:29,981 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-25 00:04:30,091 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-25 00:04:30,099 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;@763c7b30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-25 00:04:30,100 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-25 00:04:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-25 00:04:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-25 00:04:30,112 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:30,112 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:30,113 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:30,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2113269736, now seen corresponding path program 1 times [2024-09-25 00:04:30,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:30,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112674251] [2024-09-25 00:04:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,471 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 00:04:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:30,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112674251] [2024-09-25 00:04:30,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112674251] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-25 00:04:30,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-25 00:04:30,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-25 00:04:30,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904638341] [2024-09-25 00:04:30,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-25 00:04:30,480 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-25 00:04:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-25 00:04:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-25 00:04:30,511 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:30,680 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-09-25 00:04:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-25 00:04:30,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-09-25 00:04:30,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:30,691 INFO L225 Difference]: With dead ends: 55 [2024-09-25 00:04:30,692 INFO L226 Difference]: Without dead ends: 30 [2024-09-25 00:04:30,696 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-25 00:04:30,699 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:30,702 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-25 00:04:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-25 00:04:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-25 00:04:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-25 00:04:30,742 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-25 00:04:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:30,743 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-25 00:04:30,743 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-25 00:04:30,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-25 00:04:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-25 00:04:30,746 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:30,747 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:30,747 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-25 00:04:30,747 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:30,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2051125499, now seen corresponding path program 1 times [2024-09-25 00:04:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893700647] [2024-09-25 00:04:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:30,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893700647] [2024-09-25 00:04:30,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893700647] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859446499] [2024-09-25 00:04:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:30,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:30,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:30,969 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 00:04:30,971 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 00:04:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-25 00:04:31,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:31,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-25 00:04:31,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859446499] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:31,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:31,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-25 00:04:31,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590920132] [2024-09-25 00:04:31,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:31,241 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-25 00:04:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:31,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-25 00:04:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-25 00:04:31,243 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-25 00:04:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:31,489 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-09-25 00:04:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-25 00:04:31,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 22 [2024-09-25 00:04:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:31,493 INFO L225 Difference]: With dead ends: 83 [2024-09-25 00:04:31,493 INFO L226 Difference]: Without dead ends: 59 [2024-09-25 00:04:31,497 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-09-25 00:04:31,499 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:31,499 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 119 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:04:31,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-25 00:04:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-09-25 00:04:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (28), 13 states have call predecessors, (28), 11 states have call successors, (28) [2024-09-25 00:04:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-09-25 00:04:31,535 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 22 [2024-09-25 00:04:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:31,536 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-09-25 00:04:31,537 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-09-25 00:04:31,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:31,538 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-09-25 00:04:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-25 00:04:31,545 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:31,545 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:31,561 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:31,746 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 00:04:31,746 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:31,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113567, now seen corresponding path program 1 times [2024-09-25 00:04:31,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:31,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704407403] [2024-09-25 00:04:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:31,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:31,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:04:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704407403] [2024-09-25 00:04:32,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704407403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274981703] [2024-09-25 00:04:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:32,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:32,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:32,294 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 00:04:32,295 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 00:04:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:32,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-25 00:04:32,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-25 00:04:32,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-25 00:04:33,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274981703] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:33,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:33,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-25 00:04:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694229055] [2024-09-25 00:04:33,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:33,139 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-25 00:04:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-25 00:04:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-25 00:04:33,141 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:33,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:33,293 INFO L93 Difference]: Finished difference Result 123 states and 230 transitions. [2024-09-25 00:04:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-25 00:04:33,294 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2024-09-25 00:04:33,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:33,296 INFO L225 Difference]: With dead ends: 123 [2024-09-25 00:04:33,296 INFO L226 Difference]: Without dead ends: 56 [2024-09-25 00:04:33,298 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-09-25 00:04:33,299 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:33,300 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 85 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-25 00:04:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-25 00:04:33,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-25 00:04:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (29), 12 states have call predecessors, (29), 9 states have call successors, (29) [2024-09-25 00:04:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-25 00:04:33,315 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 48 [2024-09-25 00:04:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:33,316 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-25 00:04:33,316 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 5 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-09-25 00:04:33,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:33,317 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-25 00:04:33,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-25 00:04:33,321 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:33,321 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:33,343 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-25 00:04:33,525 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 00:04:33,526 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:33,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash 732471144, now seen corresponding path program 2 times [2024-09-25 00:04:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:33,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671973404] [2024-09-25 00:04:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:33,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:33,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:33,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:33,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-25 00:04:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-25 00:04:34,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671973404] [2024-09-25 00:04:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671973404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82429166] [2024-09-25 00:04:34,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-25 00:04:34,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:34,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:34,262 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 00:04:34,263 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 00:04:34,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-25 00:04:34,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:34,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-25 00:04:34,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-25 00:04:34,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-25 00:04:36,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82429166] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:36,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:36,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-25 00:04:36,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108961164] [2024-09-25 00:04:36,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:36,148 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-25 00:04:36,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:36,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-25 00:04:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-25 00:04:36,152 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 00:04:36,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:36,668 INFO L93 Difference]: Finished difference Result 122 states and 225 transitions. [2024-09-25 00:04:36,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-25 00:04:36,669 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) Word has length 82 [2024-09-25 00:04:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:36,672 INFO L225 Difference]: With dead ends: 122 [2024-09-25 00:04:36,673 INFO L226 Difference]: Without dead ends: 74 [2024-09-25 00:04:36,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1599, Unknown=0, NotChecked=0, Total=1980 [2024-09-25 00:04:36,676 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:36,676 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 193 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-25 00:04:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-25 00:04:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-09-25 00:04:36,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (25), 12 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 00:04:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-25 00:04:36,692 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 82 [2024-09-25 00:04:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:36,692 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-25 00:04:36,693 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 23 states have internal predecessors, (62), 9 states have call successors, (15), 2 states have call predecessors, (15), 12 states have return successors, (25), 15 states have call predecessors, (25), 9 states have call successors, (25) [2024-09-25 00:04:36,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-25 00:04:36,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-25 00:04:36,696 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:36,697 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:36,716 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:36,901 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 00:04:36,902 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:36,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:36,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1096714260, now seen corresponding path program 3 times [2024-09-25 00:04:36,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:36,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260217639] [2024-09-25 00:04:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:36,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-25 00:04:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 157 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-09-25 00:04:37,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260217639] [2024-09-25 00:04:37,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260217639] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:37,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67562849] [2024-09-25 00:04:37,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-25 00:04:37,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:37,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:37,654 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 00:04:37,656 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 00:04:37,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-25 00:04:37,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:37,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-25 00:04:37,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-25 00:04:37,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-25 00:04:39,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67562849] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:39,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:39,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 15] total 28 [2024-09-25 00:04:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98712475] [2024-09-25 00:04:39,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:39,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-25 00:04:39,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-25 00:04:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-09-25 00:04:39,057 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-25 00:04:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:39,604 INFO L93 Difference]: Finished difference Result 122 states and 209 transitions. [2024-09-25 00:04:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-25 00:04:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 108 [2024-09-25 00:04:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:39,607 INFO L225 Difference]: With dead ends: 122 [2024-09-25 00:04:39,607 INFO L226 Difference]: Without dead ends: 67 [2024-09-25 00:04:39,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2024-09-25 00:04:39,610 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:39,611 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 239 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:04:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-25 00:04:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-25 00:04:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2024-09-25 00:04:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-09-25 00:04:39,639 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 108 [2024-09-25 00:04:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:39,639 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-09-25 00:04:39,640 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 23 states have internal predecessors, (64), 11 states have call successors, (16), 1 states have call predecessors, (16), 12 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2024-09-25 00:04:39,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-09-25 00:04:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-09-25 00:04:39,647 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:39,648 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 20, 13, 12, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:39,668 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 00:04:39,848 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 00:04:39,849 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:39,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1260803800, now seen corresponding path program 4 times [2024-09-25 00:04:39,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693844585] [2024-09-25 00:04:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:39,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 00:04:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 00:04:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:40,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-25 00:04:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-25 00:04:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 219 proven. 706 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2024-09-25 00:04:41,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693844585] [2024-09-25 00:04:41,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693844585] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495256048] [2024-09-25 00:04:41,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-25 00:04:41,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:41,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:41,015 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 00:04:41,016 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 00:04:41,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-25 00:04:41,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:41,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-25 00:04:41,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1455 proven. 210 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2024-09-25 00:04:41,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 223 proven. 1020 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2024-09-25 00:04:43,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495256048] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:43,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:43,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 15] total 32 [2024-09-25 00:04:43,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477678664] [2024-09-25 00:04:43,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:43,867 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-25 00:04:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-25 00:04:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2024-09-25 00:04:43,869 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 29 states have internal predecessors, (97), 18 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) [2024-09-25 00:04:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:45,746 INFO L93 Difference]: Finished difference Result 181 states and 367 transitions. [2024-09-25 00:04:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-25 00:04:45,747 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 29 states have internal predecessors, (97), 18 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) Word has length 227 [2024-09-25 00:04:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:45,751 INFO L225 Difference]: With dead ends: 181 [2024-09-25 00:04:45,751 INFO L226 Difference]: Without dead ends: 120 [2024-09-25 00:04:45,758 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 497 SyntacticMatches, 11 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2800 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1851, Invalid=8451, Unknown=0, NotChecked=0, Total=10302 [2024-09-25 00:04:45,762 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 285 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:45,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 275 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-25 00:04:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-25 00:04:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 103. [2024-09-25 00:04:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 68 states have internal predecessors, (75), 20 states have call successors, (20), 11 states have call predecessors, (20), 15 states have return successors, (60), 23 states have call predecessors, (60), 19 states have call successors, (60) [2024-09-25 00:04:45,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 155 transitions. [2024-09-25 00:04:45,807 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 155 transitions. Word has length 227 [2024-09-25 00:04:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:45,807 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 155 transitions. [2024-09-25 00:04:45,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 29 states have internal predecessors, (97), 18 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (40), 15 states have call predecessors, (40), 18 states have call successors, (40) [2024-09-25 00:04:45,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 155 transitions. [2024-09-25 00:04:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-25 00:04:45,812 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:45,812 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:45,833 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:46,012 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 00:04:46,013 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:46,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1720213164, now seen corresponding path program 5 times [2024-09-25 00:04:46,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:46,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56855580] [2024-09-25 00:04:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:46,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:46,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:04:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-25 00:04:47,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56855580] [2024-09-25 00:04:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56855580] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94078016] [2024-09-25 00:04:47,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-25 00:04:47,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:47,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:47,392 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 00:04:47,396 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 00:04:47,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-25 00:04:47,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:47,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-25 00:04:47,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-25 00:04:47,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:04:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-25 00:04:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94078016] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:04:51,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:04:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-25 00:04:51,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39950591] [2024-09-25 00:04:51,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:04:51,799 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-25 00:04:51,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:04:51,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-25 00:04:51,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 00:04:51,801 INFO L87 Difference]: Start difference. First operand 103 states and 155 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-25 00:04:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:04:52,608 INFO L93 Difference]: Finished difference Result 227 states and 402 transitions. [2024-09-25 00:04:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-25 00:04:52,609 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) Word has length 160 [2024-09-25 00:04:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:04:52,616 INFO L225 Difference]: With dead ends: 227 [2024-09-25 00:04:52,616 INFO L226 Difference]: Without dead ends: 136 [2024-09-25 00:04:52,620 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 342 SyntacticMatches, 14 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=874, Invalid=3818, Unknown=0, NotChecked=0, Total=4692 [2024-09-25 00:04:52,621 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 114 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-25 00:04:52,623 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 326 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-25 00:04:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-25 00:04:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2024-09-25 00:04:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 76 states have (on average 1.105263157894737) internal successors, (84), 77 states have internal predecessors, (84), 23 states have call successors, (23), 11 states have call predecessors, (23), 18 states have return successors, (81), 29 states have call predecessors, (81), 22 states have call successors, (81) [2024-09-25 00:04:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 188 transitions. [2024-09-25 00:04:52,671 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 188 transitions. Word has length 160 [2024-09-25 00:04:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:04:52,672 INFO L474 AbstractCegarLoop]: Abstraction has 118 states and 188 transitions. [2024-09-25 00:04:52,673 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 32 states have internal predecessors, (84), 16 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (37), 18 states have call predecessors, (37), 16 states have call successors, (37) [2024-09-25 00:04:52,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 188 transitions. [2024-09-25 00:04:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-25 00:04:52,677 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:04:52,677 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:04:52,696 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-25 00:04:52,881 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 00:04:52,882 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:04:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:04:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1288512238, now seen corresponding path program 6 times [2024-09-25 00:04:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:04:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586697396] [2024-09-25 00:04:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:04:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:04:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:04:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:04:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:04:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:04:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:53,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:04:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:04:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:04:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:04:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:04:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-25 00:04:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:04:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-25 00:04:54,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:04:54,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586697396] [2024-09-25 00:04:54,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586697396] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:04:54,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886209077] [2024-09-25 00:04:54,305 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-25 00:04:54,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:04:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:04:54,307 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 00:04:54,308 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 00:04:54,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-25 00:04:54,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-25 00:04:54,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-25 00:04:54,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:04:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-25 00:04:54,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 711 proven. 75 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-25 00:05:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886209077] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:00,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 38 [2024-09-25 00:05:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611461273] [2024-09-25 00:05:00,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:00,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-25 00:05:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-25 00:05:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2024-09-25 00:05:00,792 INFO L87 Difference]: Start difference. First operand 118 states and 188 transitions. Second operand has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (11), 1 states have call predecessors, (11), 15 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2024-09-25 00:05:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:02,090 INFO L93 Difference]: Finished difference Result 195 states and 346 transitions. [2024-09-25 00:05:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-25 00:05:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (11), 1 states have call predecessors, (11), 15 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) Word has length 186 [2024-09-25 00:05:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:02,097 INFO L225 Difference]: With dead ends: 195 [2024-09-25 00:05:02,097 INFO L226 Difference]: Without dead ends: 191 [2024-09-25 00:05:02,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 400 SyntacticMatches, 20 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1027, Invalid=4673, Unknown=0, NotChecked=0, Total=5700 [2024-09-25 00:05:02,101 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 69 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:02,102 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 342 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-25 00:05:02,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-25 00:05:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2024-09-25 00:05:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 92 states have internal predecessors, (99), 24 states have call successors, (24), 11 states have call predecessors, (24), 25 states have return successors, (122), 37 states have call predecessors, (122), 23 states have call successors, (122) [2024-09-25 00:05:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 245 transitions. [2024-09-25 00:05:02,153 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 245 transitions. Word has length 186 [2024-09-25 00:05:02,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:02,154 INFO L474 AbstractCegarLoop]: Abstraction has 141 states and 245 transitions. [2024-09-25 00:05:02,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 31 states have internal predecessors, (59), 6 states have call successors, (11), 1 states have call predecessors, (11), 15 states have return successors, (24), 13 states have call predecessors, (24), 6 states have call successors, (24) [2024-09-25 00:05:02,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 245 transitions. [2024-09-25 00:05:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-25 00:05:02,159 INFO L208 NwaCegarLoop]: Found error trace [2024-09-25 00:05:02,159 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-25 00:05:02,179 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-25 00:05:02,364 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 00:05:02,365 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-25 00:05:02,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1618887262, now seen corresponding path program 7 times [2024-09-25 00:05:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-25 00:05:02,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883488380] [2024-09-25 00:05:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-25 00:05:02,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-25 00:05:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-25 00:05:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-25 00:05:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:02,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:05:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-25 00:05:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:05:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:05:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:05:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-25 00:05:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-25 00:05:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-25 00:05:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-25 00:05:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-25 00:05:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-25 00:05:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-25 00:05:03,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-25 00:05:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883488380] [2024-09-25 00:05:03,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883488380] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-25 00:05:03,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56553259] [2024-09-25 00:05:03,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-25 00:05:03,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-25 00:05:03,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-25 00:05:03,645 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 00:05:03,647 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 00:05:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-25 00:05:03,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-25 00:05:03,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-25 00:05:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-25 00:05:04,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-25 00:05:07,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-25 00:05:07,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56553259] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-25 00:05:07,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-25 00:05:07,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-25 00:05:07,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558126243] [2024-09-25 00:05:07,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-25 00:05:07,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-25 00:05:07,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-25 00:05:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-25 00:05:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-25 00:05:07,873 INFO L87 Difference]: Start difference. First operand 141 states and 245 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-25 00:05:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-25 00:05:08,682 INFO L93 Difference]: Finished difference Result 285 states and 576 transitions. [2024-09-25 00:05:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-25 00:05:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) Word has length 173 [2024-09-25 00:05:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-25 00:05:08,687 INFO L225 Difference]: With dead ends: 285 [2024-09-25 00:05:08,687 INFO L226 Difference]: Without dead ends: 0 [2024-09-25 00:05:08,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 371 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=993, Invalid=3977, Unknown=0, NotChecked=0, Total=4970 [2024-09-25 00:05:08,694 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 77 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-25 00:05:08,695 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 240 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-25 00:05:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-25 00:05:08,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-25 00:05:08,696 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 00:05:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-25 00:05:08,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2024-09-25 00:05:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-25 00:05:08,697 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-25 00:05:08,697 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 31 states have internal predecessors, (85), 17 states have call successors, (22), 1 states have call predecessors, (22), 18 states have return successors, (38), 16 states have call predecessors, (38), 17 states have call successors, (38) [2024-09-25 00:05:08,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-25 00:05:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-25 00:05:08,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-25 00:05:08,701 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-25 00:05:08,719 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 00:05:08,902 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 00:05:08,906 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2024-09-25 00:05:08,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-25 00:05:19,645 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-25 00:05:19,690 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-25 00:05:19,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:05:19 BoogieIcfgContainer [2024-09-25 00:05:19,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-25 00:05:19,693 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-25 00:05:19,693 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-25 00:05:19,693 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-25 00:05:19,695 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:29" (3/4) ... [2024-09-25 00:05:19,697 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-25 00:05:19,758 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-25 00:05:19,758 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-25 00:05:19,759 INFO L158 Benchmark]: Toolchain (without parser) took 50571.92ms. Allocated memory was 130.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 82.9MB in the beginning and 560.9MB in the end (delta: -478.0MB). Peak memory consumption was 622.0MB. Max. memory is 16.1GB. [2024-09-25 00:05:19,759 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 91.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-25 00:05:19,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.47ms. Allocated memory is still 130.0MB. Free memory was 82.5MB in the beginning and 71.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-25 00:05:19,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.94ms. Allocated memory is still 130.0MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:05:19,760 INFO L158 Benchmark]: Boogie Preprocessor took 51.32ms. Allocated memory is still 130.0MB. Free memory was 70.3MB in the beginning and 68.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:05:19,760 INFO L158 Benchmark]: RCFGBuilder took 386.26ms. Allocated memory is still 130.0MB. Free memory was 68.9MB in the beginning and 56.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-25 00:05:19,761 INFO L158 Benchmark]: TraceAbstraction took 49753.53ms. Allocated memory was 130.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 56.0MB in the beginning and 563.0MB in the end (delta: -507.0MB). Peak memory consumption was 708.0MB. Max. memory is 16.1GB. [2024-09-25 00:05:19,761 INFO L158 Benchmark]: Witness Printer took 65.77ms. Allocated memory is still 1.2GB. Free memory was 563.0MB in the beginning and 560.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-25 00:05:19,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 91.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.47ms. Allocated memory is still 130.0MB. Free memory was 82.5MB in the beginning and 71.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.94ms. Allocated memory is still 130.0MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.32ms. Allocated memory is still 130.0MB. Free memory was 70.3MB in the beginning and 68.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 386.26ms. Allocated memory is still 130.0MB. Free memory was 68.9MB in the beginning and 56.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 49753.53ms. Allocated memory was 130.0MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 56.0MB in the beginning and 563.0MB in the end (delta: -507.0MB). Peak memory consumption was 708.0MB. Max. memory is 16.1GB. * Witness Printer took 65.77ms. Allocated memory is still 1.2GB. Free memory was 563.0MB in the beginning and 560.9MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38.9s, OverallIterations: 9, TraceHistogramMax: 33, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 680 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 644 mSDsluCounter, 1903 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1652 mSDsCounter, 875 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4500 IncrementalHoareTripleChecker+Invalid, 5375 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 875 mSolverCounterUnsat, 251 mSDtfsCounter, 4500 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2680 GetRequests, 2178 SyntacticMatches, 75 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7156 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=8, InterpolantAutomatonStates: 279, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 118 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 28.7s InterpolantComputationTime, 2027 NumberOfCodeBlocks, 1933 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 3008 ConstructedInterpolants, 0 QuantifiedInterpolants, 5872 SizeOfPredicates, 32 NumberOfNonLiveVariables, 2747 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 25 InterpolantComputations, 1 PerfectInterpolantSequences, 19128/23808 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: 16]: Procedure Contract for ackermann Derived contract for procedure ackermann. Ensures: (((n < \result) || (m != 0)) && ((0 < m) || (m == 0))) RESULT: Ultimate proved your program to be correct! [2024-09-25 00:05:19,804 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE