./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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 03:06:39,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 03:06:39,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 03:06:39,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 03:06:39,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 03:06:39,300 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 03:06:39,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 03:06:39,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 03:06:39,303 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 03:06:39,304 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 03:06:39,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 03:06:39,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 03:06:39,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 03:06:39,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 03:06:39,306 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 03:06:39,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 03:06:39,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 03:06:39,308 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 03:06:39,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 03:06:39,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 03:06:39,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 03:06:39,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 03:06:39,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 03:06:39,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 03:06:39,313 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 03:06:39,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 03:06:39,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 03:06:39,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 03:06:39,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 03:06:39,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 03:06:39,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 03:06:39,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 03:06:39,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:06:39,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 03:06:39,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 03:06:39,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 03:06:39,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 03:06:39,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 03:06:39,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 03:06:39,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 03:06:39,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 03:06:39,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 03:06:39,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f83c4bcdce9397140788b204098e14e4fa25f5b66f064340f4aaa544fbb462 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-13 03:06:39,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 03:06:39,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 03:06:39,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 03:06:39,569 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 03:06:39,570 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 03:06:39,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Ackermann04.c [2024-09-13 03:06:40,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 03:06:41,103 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 03:06:41,104 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann04.c [2024-09-13 03:06:41,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/22c2e6d3c/2ec4a4960f0a40e9a66fbee1a375371d/FLAGf3b3de319 [2024-09-13 03:06:41,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/22c2e6d3c/2ec4a4960f0a40e9a66fbee1a375371d [2024-09-13 03:06:41,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 03:06:41,126 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-13 03:06:41,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 03:06:41,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 03:06:41,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 03:06:41,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69677a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41, skipping insertion in model container [2024-09-13 03:06:41,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,150 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 03:06:41,316 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann04.c[1166,1179] [2024-09-13 03:06:41,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:06:41,333 INFO L200 MainTranslator]: Completed pre-run [2024-09-13 03:06:41,348 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Ackermann04.c[1166,1179] [2024-09-13 03:06:41,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 03:06:41,364 INFO L204 MainTranslator]: Completed translation [2024-09-13 03:06:41,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41 WrapperNode [2024-09-13 03:06:41,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 03:06:41,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 03:06:41,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 03:06:41,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 03:06:41,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,390 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-13 03:06:41,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 03:06:41,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 03:06:41,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 03:06:41,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 03:06:41,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,446 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-13 03:06:41,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 03:06:41,457 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 03:06:41,457 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 03:06:41,457 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 03:06:41,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (1/1) ... [2024-09-13 03:06:41,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 03:06:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:41,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 03:06:41,494 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 03:06:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 03:06:41,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-13 03:06:41,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-13 03:06:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 03:06:41,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 03:06:41,533 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-09-13 03:06:41,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-09-13 03:06:41,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-13 03:06:41,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-13 03:06:41,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-13 03:06:41,587 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 03:06:41,589 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 03:06:41,702 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-09-13 03:06:41,702 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 03:06:41,719 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 03:06:41,721 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 03:06:41,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:06:41 BoogieIcfgContainer [2024-09-13 03:06:41,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 03:06:41,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 03:06:41,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 03:06:41,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 03:06:41,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 03:06:41" (1/3) ... [2024-09-13 03:06:41,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717c9e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:06:41, skipping insertion in model container [2024-09-13 03:06:41,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 03:06:41" (2/3) ... [2024-09-13 03:06:41,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717c9e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 03:06:41, skipping insertion in model container [2024-09-13 03:06:41,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:06:41" (3/3) ... [2024-09-13 03:06:41,731 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2024-09-13 03:06:41,748 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 03:06:41,748 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-13 03:06:41,796 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 03:06:41,801 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;@378df20a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 03:06:41,801 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-13 03:06:41,804 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) [2024-09-13 03:06:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-13 03:06:41,810 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:41,810 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 03:06:41,811 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:41,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:41,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2113269736, now seen corresponding path program 1 times [2024-09-13 03:06:41,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:41,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706625740] [2024-09-13 03:06:41,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:41,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 03:06:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:42,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706625740] [2024-09-13 03:06:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706625740] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 03:06:42,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 03:06:42,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 03:06:42,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433460594] [2024-09-13 03:06:42,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 03:06:42,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 03:06:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 03:06:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 03:06:42,125 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) [2024-09-13 03:06:42,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:42,256 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2024-09-13 03:06:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 03:06:42,259 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 [2024-09-13 03:06:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:42,265 INFO L225 Difference]: With dead ends: 55 [2024-09-13 03:06:42,265 INFO L226 Difference]: Without dead ends: 30 [2024-09-13 03:06:42,267 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 [2024-09-13 03:06:42,270 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 [2024-09-13 03:06:42,271 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] [2024-09-13 03:06:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-13 03:06:42,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-09-13 03:06:42,309 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) [2024-09-13 03:06:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-09-13 03:06:42,312 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2024-09-13 03:06:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:42,313 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-09-13 03:06:42,313 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) [2024-09-13 03:06:42,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-09-13 03:06:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 03:06:42,318 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:42,319 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] [2024-09-13 03:06:42,319 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 03:06:42,319 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:42,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2051125499, now seen corresponding path program 1 times [2024-09-13 03:06:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:42,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254630377] [2024-09-13 03:06:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:42,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:06:42,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:42,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254630377] [2024-09-13 03:06:42,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254630377] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:42,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045529097] [2024-09-13 03:06:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:42,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:06:42,538 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 03:06:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:42,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 03:06:42,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:06:42,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 03:06:42,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045529097] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:42,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:42,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-09-13 03:06:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031715137] [2024-09-13 03:06:42,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:42,782 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 03:06:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 03:06:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-09-13 03:06:42,783 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) [2024-09-13 03:06:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:42,997 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2024-09-13 03:06:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-13 03:06:42,998 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 [2024-09-13 03:06:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:43,001 INFO L225 Difference]: With dead ends: 83 [2024-09-13 03:06:43,001 INFO L226 Difference]: Without dead ends: 59 [2024-09-13 03:06:43,005 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 [2024-09-13 03:06:43,007 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 [2024-09-13 03:06:43,007 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] [2024-09-13 03:06:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-13 03:06:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-09-13 03:06:43,027 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) [2024-09-13 03:06:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-09-13 03:06:43,029 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 22 [2024-09-13 03:06:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:43,030 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-09-13 03:06:43,030 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) [2024-09-13 03:06:43,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-09-13 03:06:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-09-13 03:06:43,034 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:43,034 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] [2024-09-13 03:06:43,050 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 03:06:43,235 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 [2024-09-13 03:06:43,236 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:43,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1636113567, now seen corresponding path program 1 times [2024-09-13 03:06:43,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:43,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604093332] [2024-09-13 03:06:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,679 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-13 03:06:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:43,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604093332] [2024-09-13 03:06:43,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604093332] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352957510] [2024-09-13 03:06:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:43,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:43,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:43,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:06:43,687 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 03:06:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:43,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 03:06:43,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-09-13 03:06:43,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-09-13 03:06:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352957510] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:44,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:44,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-09-13 03:06:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432229320] [2024-09-13 03:06:44,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:44,431 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 03:06:44,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 03:06:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-09-13 03:06:44,432 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) [2024-09-13 03:06:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:44,553 INFO L93 Difference]: Finished difference Result 123 states and 230 transitions. [2024-09-13 03:06:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 03:06:44,553 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 [2024-09-13 03:06:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:44,555 INFO L225 Difference]: With dead ends: 123 [2024-09-13 03:06:44,556 INFO L226 Difference]: Without dead ends: 56 [2024-09-13 03:06:44,561 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 [2024-09-13 03:06:44,562 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 [2024-09-13 03:06:44,562 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] [2024-09-13 03:06:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-13 03:06:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-13 03:06:44,575 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) [2024-09-13 03:06:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2024-09-13 03:06:44,576 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 48 [2024-09-13 03:06:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:44,576 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2024-09-13 03:06:44,577 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) [2024-09-13 03:06:44,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2024-09-13 03:06:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-09-13 03:06:44,579 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:44,579 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] [2024-09-13 03:06:44,595 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 03:06:44,783 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 [2024-09-13 03:06:44,784 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:44,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash 732471144, now seen corresponding path program 2 times [2024-09-13 03:06:44,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470386587] [2024-09-13 03:06:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:44,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-13 03:06:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 101 proven. 59 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-09-13 03:06:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470386587] [2024-09-13 03:06:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470386587] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042340122] [2024-09-13 03:06:45,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 03:06:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:45,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:06:45,462 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 03:06:45,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 03:06:45,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:45,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-13 03:06:45,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 141 proven. 37 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-09-13 03:06:45,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 85 proven. 65 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-09-13 03:06:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042340122] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:47,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 29 [2024-09-13 03:06:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033260672] [2024-09-13 03:06:47,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:47,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-13 03:06:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-13 03:06:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-09-13 03:06:47,166 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) [2024-09-13 03:06:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:47,603 INFO L93 Difference]: Finished difference Result 122 states and 225 transitions. [2024-09-13 03:06:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 03:06:47,604 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 [2024-09-13 03:06:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:47,606 INFO L225 Difference]: With dead ends: 122 [2024-09-13 03:06:47,606 INFO L226 Difference]: Without dead ends: 74 [2024-09-13 03:06:47,608 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 [2024-09-13 03:06:47,609 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 [2024-09-13 03:06:47,609 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] [2024-09-13 03:06:47,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-09-13 03:06:47,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2024-09-13 03:06:47,627 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) [2024-09-13 03:06:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2024-09-13 03:06:47,628 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 82 [2024-09-13 03:06:47,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:47,628 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2024-09-13 03:06:47,628 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) [2024-09-13 03:06:47,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2024-09-13 03:06:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-13 03:06:47,632 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:47,632 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] [2024-09-13 03:06:47,650 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 03:06:47,832 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 [2024-09-13 03:06:47,833 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:47,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1096714260, now seen corresponding path program 3 times [2024-09-13 03:06:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500792932] [2024-09-13 03:06:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:47,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:47,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-13 03:06:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 157 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-09-13 03:06:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500792932] [2024-09-13 03:06:48,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500792932] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860831301] [2024-09-13 03:06:48,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 03:06:48,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:48,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:48,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:06:48,537 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 03:06:48,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-13 03:06:48,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:48,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 03:06:48,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-09-13 03:06:48,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 208 proven. 61 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-09-13 03:06:49,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860831301] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:49,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:49,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 15] total 28 [2024-09-13 03:06:49,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799961622] [2024-09-13 03:06:49,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:49,910 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 03:06:49,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 03:06:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2024-09-13 03:06:49,911 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) [2024-09-13 03:06:50,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:50,357 INFO L93 Difference]: Finished difference Result 122 states and 209 transitions. [2024-09-13 03:06:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-13 03:06:50,358 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 [2024-09-13 03:06:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:50,360 INFO L225 Difference]: With dead ends: 122 [2024-09-13 03:06:50,360 INFO L226 Difference]: Without dead ends: 67 [2024-09-13 03:06:50,361 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=492, Invalid=1958, Unknown=0, NotChecked=0, Total=2450 [2024-09-13 03:06:50,362 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:50,362 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 240 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 03:06:50,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-13 03:06:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2024-09-13 03:06:50,372 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) [2024-09-13 03:06:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-09-13 03:06:50,373 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 108 [2024-09-13 03:06:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:50,374 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-09-13 03:06:50,374 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) [2024-09-13 03:06:50,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-09-13 03:06:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-09-13 03:06:50,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:50,377 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] [2024-09-13 03:06:50,389 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 03:06:50,577 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 [2024-09-13 03:06:50,577 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:50,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1260803800, now seen corresponding path program 4 times [2024-09-13 03:06:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:50,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495610758] [2024-09-13 03:06:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:50,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:50,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-13 03:06:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-13 03:06:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-13 03:06:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-13 03:06:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 219 proven. 706 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2024-09-13 03:06:51,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:51,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495610758] [2024-09-13 03:06:51,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495610758] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:51,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121263047] [2024-09-13 03:06:51,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-13 03:06:51,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:51,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:51,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:06:51,541 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 03:06:51,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-13 03:06:51,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:51,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 03:06:51,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 1455 proven. 210 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2024-09-13 03:06:51,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:06:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 223 proven. 1020 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2024-09-13 03:06:54,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121263047] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:06:54,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:06:54,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 15] total 32 [2024-09-13 03:06:54,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698119761] [2024-09-13 03:06:54,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:06:54,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-13 03:06:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:06:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-13 03:06:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2024-09-13 03:06:54,172 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) [2024-09-13 03:06:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:06:55,892 INFO L93 Difference]: Finished difference Result 181 states and 367 transitions. [2024-09-13 03:06:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-13 03:06:55,893 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 [2024-09-13 03:06:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:06:55,896 INFO L225 Difference]: With dead ends: 181 [2024-09-13 03:06:55,896 INFO L226 Difference]: Without dead ends: 120 [2024-09-13 03:06:55,903 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 497 SyntacticMatches, 11 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2800 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1851, Invalid=8451, Unknown=0, NotChecked=0, Total=10302 [2024-09-13 03:06:55,906 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-13 03:06:55,908 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 275 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-13 03:06:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-13 03:06:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 103. [2024-09-13 03:06:55,938 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) [2024-09-13 03:06:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 155 transitions. [2024-09-13 03:06:55,941 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 155 transitions. Word has length 227 [2024-09-13 03:06:55,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:06:55,942 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 155 transitions. [2024-09-13 03:06:55,942 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) [2024-09-13 03:06:55,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:55,942 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 155 transitions. [2024-09-13 03:06:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-09-13 03:06:55,944 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:06:55,944 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] [2024-09-13 03:06:55,963 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 03:06:56,144 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 [2024-09-13 03:06:56,145 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:06:56,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:06:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1720213164, now seen corresponding path program 5 times [2024-09-13 03:06:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:06:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518450137] [2024-09-13 03:06:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:06:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:06:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:06:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:06:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:06:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:56,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:06:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:06:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:06:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:06:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:06:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:06:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:06:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 445 proven. 284 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2024-09-13 03:06:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:06:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518450137] [2024-09-13 03:06:57,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518450137] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:06:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909993024] [2024-09-13 03:06:57,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-13 03:06:57,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:06:57,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:06:57,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:06:57,183 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 03:06:57,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-13 03:06:57,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:06:57,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-13 03:06:57,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:06:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2024-09-13 03:06:57,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 467 proven. 286 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2024-09-13 03:07:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909993024] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:01,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:01,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 27] total 38 [2024-09-13 03:07:01,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279328108] [2024-09-13 03:07:01,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:01,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-13 03:07:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-13 03:07:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2024-09-13 03:07:01,113 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) [2024-09-13 03:07:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:01,777 INFO L93 Difference]: Finished difference Result 227 states and 402 transitions. [2024-09-13 03:07:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-13 03:07:01,778 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 [2024-09-13 03:07:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:01,783 INFO L225 Difference]: With dead ends: 227 [2024-09-13 03:07:01,783 INFO L226 Difference]: Without dead ends: 136 [2024-09-13 03:07:01,787 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 342 SyntacticMatches, 14 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=874, Invalid=3818, Unknown=0, NotChecked=0, Total=4692 [2024-09-13 03:07:01,789 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:01,789 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 326 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 03:07:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-13 03:07:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2024-09-13 03:07:01,824 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) [2024-09-13 03:07:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 188 transitions. [2024-09-13 03:07:01,829 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 188 transitions. Word has length 160 [2024-09-13 03:07:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:01,830 INFO L474 AbstractCegarLoop]: Abstraction has 118 states and 188 transitions. [2024-09-13 03:07:01,830 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) [2024-09-13 03:07:01,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 188 transitions. [2024-09-13 03:07:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-09-13 03:07:01,847 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:01,847 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] [2024-09-13 03:07:01,865 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:02,048 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 [2024-09-13 03:07:02,049 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:02,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:02,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1288512238, now seen corresponding path program 6 times [2024-09-13 03:07:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870550254] [2024-09-13 03:07:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:02,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:07:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:07:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:07:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:02,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-13 03:07:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-09-13 03:07:03,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:03,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870550254] [2024-09-13 03:07:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870550254] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:03,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486396725] [2024-09-13 03:07:03,199 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-13 03:07:03,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:03,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:03,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:03,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-13 03:07:03,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-09-13 03:07:03,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 03:07:03,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-13 03:07:03,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 657 proven. 84 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-09-13 03:07:03,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 711 proven. 75 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2024-09-13 03:07:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486396725] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:09,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:09,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 33] total 38 [2024-09-13 03:07:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810861364] [2024-09-13 03:07:09,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:09,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-13 03:07:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-13 03:07:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2024-09-13 03:07:09,625 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) [2024-09-13 03:07:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:10,852 INFO L93 Difference]: Finished difference Result 195 states and 346 transitions. [2024-09-13 03:07:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-13 03:07:10,852 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 [2024-09-13 03:07:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:10,855 INFO L225 Difference]: With dead ends: 195 [2024-09-13 03:07:10,856 INFO L226 Difference]: Without dead ends: 191 [2024-09-13 03:07:10,860 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 400 SyntacticMatches, 20 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1027, Invalid=4673, Unknown=0, NotChecked=0, Total=5700 [2024-09-13 03:07:10,861 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 69 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 03:07:10,861 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 342 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 03:07:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-13 03:07:10,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2024-09-13 03:07:10,904 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) [2024-09-13 03:07:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 245 transitions. [2024-09-13 03:07:10,907 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 245 transitions. Word has length 186 [2024-09-13 03:07:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:10,908 INFO L474 AbstractCegarLoop]: Abstraction has 141 states and 245 transitions. [2024-09-13 03:07:10,908 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) [2024-09-13 03:07:10,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 245 transitions. [2024-09-13 03:07:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-13 03:07:10,911 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 03:07:10,911 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] [2024-09-13 03:07:10,929 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-13 03:07:11,115 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 [2024-09-13 03:07:11,116 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-13 03:07:11,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1618887262, now seen corresponding path program 7 times [2024-09-13 03:07:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 03:07:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021346687] [2024-09-13 03:07:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 03:07:11,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 03:07:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-13 03:07:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 03:07:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-13 03:07:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:11,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-13 03:07:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 03:07:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 03:07:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-13 03:07:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-13 03:07:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-13 03:07:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 502 proven. 372 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2024-09-13 03:07:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 03:07:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021346687] [2024-09-13 03:07:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021346687] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 03:07:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182070495] [2024-09-13 03:07:12,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-13 03:07:12,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 03:07:12,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 03:07:12,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 03:07:12,185 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-13 03:07:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 03:07:12,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-13 03:07:12,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 03:07:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-09-13 03:07:12,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 03:07:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 525 proven. 384 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-09-13 03:07:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182070495] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 03:07:16,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 03:07:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 28] total 35 [2024-09-13 03:07:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308311357] [2024-09-13 03:07:16,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 03:07:16,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-13 03:07:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 03:07:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-13 03:07:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 03:07:16,100 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) [2024-09-13 03:07:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 03:07:16,792 INFO L93 Difference]: Finished difference Result 285 states and 576 transitions. [2024-09-13 03:07:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-13 03:07:16,793 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 [2024-09-13 03:07:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 03:07:16,794 INFO L225 Difference]: With dead ends: 285 [2024-09-13 03:07:16,794 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 03:07:16,798 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 371 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=993, Invalid=3977, Unknown=0, NotChecked=0, Total=4970 [2024-09-13 03:07:16,799 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 [2024-09-13 03:07:16,799 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] [2024-09-13 03:07:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 03:07:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 03:07:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 03:07:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 03:07:16,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2024-09-13 03:07:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 03:07:16,801 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 03:07:16,801 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) [2024-09-13 03:07:16,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 03:07:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 03:07:16,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 03:07:16,804 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-13 03:07:16,822 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-13 03:07:17,008 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 [2024-09-13 03:07:17,012 INFO L408 BasicCegarLoop]: Path program histogram: [7, 1, 1] [2024-09-13 03:07:17,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-13 03:07:26,499 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 03:07:26,531 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-13 03:07:26,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 03:07:26 BoogieIcfgContainer [2024-09-13 03:07:26,532 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 03:07:26,533 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-13 03:07:26,533 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-13 03:07:26,533 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-13 03:07:26,533 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 03:06:41" (3/4) ... [2024-09-13 03:07:26,535 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-13 03:07:26,538 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-13 03:07:26,538 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2024-09-13 03:07:26,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-13 03:07:26,542 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-09-13 03:07:26,542 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-09-13 03:07:26,542 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-09-13 03:07:26,542 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-13 03:07:26,621 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-13 03:07:26,621 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-13 03:07:26,621 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-13 03:07:26,622 INFO L158 Benchmark]: Toolchain (without parser) took 45495.60ms. Allocated memory was 157.3MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 89.2MB in the beginning and 789.2MB in the end (delta: -700.1MB). Peak memory consumption was 149.2MB. Max. memory is 16.1GB. [2024-09-13 03:07:26,622 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 157.3MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:07:26,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.28ms. Allocated memory is still 157.3MB. Free memory was 89.1MB in the beginning and 77.9MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 03:07:26,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.51ms. Allocated memory is still 157.3MB. Free memory was 77.9MB in the beginning and 76.9MB in the end (delta: 979.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 03:07:26,623 INFO L158 Benchmark]: Boogie Preprocessor took 65.75ms. Allocated memory is still 157.3MB. Free memory was 76.9MB in the beginning and 129.3MB in the end (delta: -52.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2024-09-13 03:07:26,623 INFO L158 Benchmark]: RCFGBuilder took 264.30ms. Allocated memory is still 157.3MB. Free memory was 129.3MB in the beginning and 116.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 03:07:26,623 INFO L158 Benchmark]: TraceAbstraction took 44807.76ms. Allocated memory was 157.3MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 115.8MB in the beginning and 794.5MB in the end (delta: -678.7MB). Peak memory consumption was 604.5MB. Max. memory is 16.1GB. [2024-09-13 03:07:26,624 INFO L158 Benchmark]: Witness Printer took 88.48ms. Allocated memory is still 1.0GB. Free memory was 794.5MB in the beginning and 789.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-13 03:07:26,625 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 157.3MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.28ms. Allocated memory is still 157.3MB. Free memory was 89.1MB in the beginning and 77.9MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.51ms. Allocated memory is still 157.3MB. Free memory was 77.9MB in the beginning and 76.9MB in the end (delta: 979.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.75ms. Allocated memory is still 157.3MB. Free memory was 76.9MB in the beginning and 129.3MB in the end (delta: -52.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * RCFGBuilder took 264.30ms. Allocated memory is still 157.3MB. Free memory was 129.3MB in the beginning and 116.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 44807.76ms. Allocated memory was 157.3MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 115.8MB in the beginning and 794.5MB in the end (delta: -678.7MB). Peak memory consumption was 604.5MB. Max. memory is 16.1GB. * Witness Printer took 88.48ms. Allocated memory is still 1.0GB. Free memory was 794.5MB in the beginning and 789.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 35.2s, OverallIterations: 9, TraceHistogramMax: 33, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 678 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 642 mSDsluCounter, 1904 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1652 mSDsCounter, 870 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4554 IncrementalHoareTripleChecker+Invalid, 5424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 870 mSolverCounterUnsat, 252 mSDtfsCounter, 4554 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2680 GetRequests, 2178 SyntacticMatches, 75 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7153 ImplicationChecksByTransitivity, 5.6s 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 118 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 26.1s 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: (((\old(n) < \result) || (\old(m) != 0)) && ((0 < \old(m)) || (\old(m) == 0))) RESULT: Ultimate proved your program to be correct! [2024-09-13 03:07:26,658 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE