This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:25:19,605 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:25:19,684 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:25:19,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:25:19,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:25:19,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:25:19,724 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:25:19,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:25:19,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:25:19,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:25:19,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:25:19,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:25:19,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:25:19,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:25:19,729 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:25:19,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:25:19,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:25:19,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:25:19,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:25:19,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:25:19,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:25:19,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:25:19,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:25:19,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:25:19,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:25:19,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:25:19,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:25:19,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:25:19,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:25:19,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:25:19,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:25:19,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:25:19,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:25:19,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:25:19,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:25:19,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:25:19,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:25:19,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:25:19,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:25:19,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:25:19,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:25:19,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:25:19,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:25:20,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:25:20,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:25:20,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:25:20,102 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:25:20,103 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:25:20,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_20x0-2.yml/witness-2.1.yml [2024-09-15 20:25:20,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:25:20,152 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:25:20,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-15 20:25:21,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:25:21,839 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:25:21,840 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-15 20:25:21,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c6db62c5f/dffd2a6196f54949b66c8bc757fe06d8/FLAGd04769451 [2024-09-15 20:25:22,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c6db62c5f/dffd2a6196f54949b66c8bc757fe06d8 [2024-09-15 20:25:22,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:25:22,230 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:25:22,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:25:22,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:25:22,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:25:22,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:20" (1/2) ... [2024-09-15 20:25:22,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad56c20 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:25:22, skipping insertion in model container [2024-09-15 20:25:22,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:20" (1/2) ... [2024-09-15 20:25:22,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a61d1a0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:25:22, skipping insertion in model container [2024-09-15 20:25:22,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:25:22" (2/2) ... [2024-09-15 20:25:22,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad56c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22, skipping insertion in model container [2024-09-15 20:25:22,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:25:22" (2/2) ... [2024-09-15 20:25:22,255 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:25:22,256 INFO L1541 ArrayList]: Function contract at [L5]: requires null, ensures (\result == ((long long) \old(n) + \old(m))) [2024-09-15 20:25:22,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:25:22,422 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494] [2024-09-15 20:25:22,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:25:22,444 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-15 20:25:22,483 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c[481,494] [2024-09-15 20:25:22,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:25:22,499 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:25:22,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22 WrapperNode [2024-09-15 20:25:22,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:25:22,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:25:22,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:25:22,502 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:25:22,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,528 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-09-15 20:25:22,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:25:22,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:25:22,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:25:22,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:25:22,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,548 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure sum is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-15 20:25:22,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:25:22,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:25:22,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:25:22,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:25:22,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (1/1) ... [2024-09-15 20:25:22,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:25:22,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:22,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:25:22,601 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:25:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:25:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:25:22,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:25:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-15 20:25:22,640 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-15 20:25:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:25:22,698 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:25:22,700 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:25:22,829 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-15 20:25:22,829 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:25:22,861 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:25:22,861 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 20:25:22,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:25:22 BoogieIcfgContainer [2024-09-15 20:25:22,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:25:22,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:25:22,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:25:22,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:25:22,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:20" (1/4) ... [2024-09-15 20:25:22,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f0fe and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:25:22, skipping insertion in model container [2024-09-15 20:25:22,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:25:22" (2/4) ... [2024-09-15 20:25:22,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:25:22, skipping insertion in model container [2024-09-15 20:25:22,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:22" (3/4) ... [2024-09-15 20:25:22,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb7f0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:25:22, skipping insertion in model container [2024-09-15 20:25:22,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:25:22" (4/4) ... [2024-09-15 20:25:22,871 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2024-09-15 20:25:22,890 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:25:22,890 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-15 20:25:22,928 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:25:22,935 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=None, 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;@617032ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:25:22,935 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-15 20:25:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:25:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:25:22,948 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:22,948 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:25:22,949 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:22,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-15 20:25:22,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:22,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698292073] [2024-09-15 20:25:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:23,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698292073] [2024-09-15 20:25:23,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698292073] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:25:23,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:25:23,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:25:23,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048370618] [2024-09-15 20:25:23,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:25:23,268 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:25:23,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:25:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:25:23,315 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:25:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:23,413 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-15 20:25:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:25:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:25:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:23,421 INFO L225 Difference]: With dead ends: 22 [2024-09-15 20:25:23,422 INFO L226 Difference]: Without dead ends: 20 [2024-09-15 20:25:23,424 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:25:23,428 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:25:23,430 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:25:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-15 20:25:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-15 20:25:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-15 20:25:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-15 20:25:23,465 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2024-09-15 20:25:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:23,466 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-15 20:25:23,466 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:25:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-15 20:25:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-15 20:25:23,468 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:23,469 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:23,469 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:25:23,470 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:23,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times [2024-09-15 20:25:23,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:23,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750777353] [2024-09-15 20:25:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750777353] [2024-09-15 20:25:23,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750777353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:23,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643349773] [2024-09-15 20:25:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:23,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:23,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:25:23,616 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:25:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:23,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 20:25:23,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:23,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:25:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643349773] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:25:23,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:25:23,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-15 20:25:23,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913258598] [2024-09-15 20:25:23,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:25:23,824 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 20:25:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 20:25:23,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:25:23,825 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:25:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:24,026 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-09-15 20:25:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 20:25:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-15 20:25:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:24,028 INFO L225 Difference]: With dead ends: 44 [2024-09-15 20:25:24,028 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 20:25:24,029 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:25:24,030 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:25:24,031 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 64 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:25:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 20:25:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-15 20:25:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 20:25:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-15 20:25:24,039 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2024-09-15 20:25:24,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:24,040 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-15 20:25:24,040 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:25:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-15 20:25:24,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-15 20:25:24,041 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:24,041 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-09-15 20:25:24,059 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 20:25:24,242 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 [2024-09-15 20:25:24,242 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:24,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times [2024-09-15 20:25:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294129424] [2024-09-15 20:25:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:24,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:24,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294129424] [2024-09-15 20:25:24,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294129424] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:24,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256695866] [2024-09-15 20:25:24,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:25:24,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:24,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:24,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:25:24,526 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:25:24,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-15 20:25:24,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:25:24,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 20:25:24,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-15 20:25:24,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:25:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256695866] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:25:24,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:25:24,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2024-09-15 20:25:24,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717684653] [2024-09-15 20:25:24,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:25:24,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:25:24,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:25:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-15 20:25:24,619 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:25:24,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:24,671 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-15 20:25:24,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:25:24,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-15 20:25:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:24,673 INFO L225 Difference]: With dead ends: 39 [2024-09-15 20:25:24,673 INFO L226 Difference]: Without dead ends: 39 [2024-09-15 20:25:24,674 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-15 20:25:24,675 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:25:24,675 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:25:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-15 20:25:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-15 20:25:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-15 20:25:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-15 20:25:24,681 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2024-09-15 20:25:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:24,682 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-15 20:25:24,682 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:25:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-15 20:25:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-15 20:25:24,682 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:24,683 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:24,699 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 20:25:24,883 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 [2024-09-15 20:25:24,884 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:24,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times [2024-09-15 20:25:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387857433] [2024-09-15 20:25:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:25,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 20:25:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:25,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387857433] [2024-09-15 20:25:25,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387857433] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96302424] [2024-09-15 20:25:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:25,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:25,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:25:25,180 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:25:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:25,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 20:25:25,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:25,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:25:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96302424] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:25:25,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:25:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2024-09-15 20:25:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829426475] [2024-09-15 20:25:25,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:25:25,512 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 20:25:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 20:25:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-09-15 20:25:25,515 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:25:25,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:25,935 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-15 20:25:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 20:25:25,936 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-15 20:25:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:25,937 INFO L225 Difference]: With dead ends: 71 [2024-09-15 20:25:25,937 INFO L226 Difference]: Without dead ends: 71 [2024-09-15 20:25:25,938 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 20:25:25,939 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:25:25,939 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 73 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:25:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-15 20:25:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-09-15 20:25:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-15 20:25:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-15 20:25:25,947 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20 [2024-09-15 20:25:25,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:25,947 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-15 20:25:25,947 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:25:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-15 20:25:25,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-15 20:25:25,948 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:25,948 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:25,966 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 20:25:26,148 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 [2024-09-15 20:25:26,149 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:26,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash 756088836, now seen corresponding path program 2 times [2024-09-15 20:25:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:26,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952448765] [2024-09-15 20:25:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:26,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:25:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:26,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952448765] [2024-09-15 20:25:26,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952448765] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039064434] [2024-09-15 20:25:26,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:25:26,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:26,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:26,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:25:26,610 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:25:26,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:25:26,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:25:26,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-15 20:25:26,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:26,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:25:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039064434] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:25:27,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:25:27,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 45 [2024-09-15 20:25:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501289070] [2024-09-15 20:25:27,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:25:27,332 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-15 20:25:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-15 20:25:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2024-09-15 20:25:27,335 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:25:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:28,253 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2024-09-15 20:25:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-15 20:25:28,254 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-09-15 20:25:28,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:28,256 INFO L225 Difference]: With dead ends: 141 [2024-09-15 20:25:28,256 INFO L226 Difference]: Without dead ends: 141 [2024-09-15 20:25:28,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2024-09-15 20:25:28,258 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 260 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 20:25:28,259 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 190 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 20:25:28,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-09-15 20:25:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2024-09-15 20:25:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 83 states have internal predecessors, (101), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-09-15 20:25:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2024-09-15 20:25:28,281 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 35 [2024-09-15 20:25:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:28,282 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2024-09-15 20:25:28,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:25:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2024-09-15 20:25:28,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-15 20:25:28,283 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:28,283 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:28,302 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-15 20:25:28,488 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 [2024-09-15 20:25:28,489 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:28,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1369371833, now seen corresponding path program 3 times [2024-09-15 20:25:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:28,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851966202] [2024-09-15 20:25:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:28,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:29,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-15 20:25:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 552 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:29,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:29,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851966202] [2024-09-15 20:25:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851966202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769252759] [2024-09-15 20:25:29,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:25:29,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:29,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:29,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:25:29,738 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:25:29,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:25:29,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:25:29,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 20:25:29,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-09-15 20:25:29,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:25:29,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769252759] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:25:29,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:25:29,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [45] total 46 [2024-09-15 20:25:29,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993799756] [2024-09-15 20:25:29,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:25:29,856 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:25:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:25:29,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2024-09-15 20:25:29,860 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 20:25:29,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:29,912 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2024-09-15 20:25:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:25:29,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2024-09-15 20:25:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:29,914 INFO L225 Difference]: With dead ends: 122 [2024-09-15 20:25:29,914 INFO L226 Difference]: Without dead ends: 122 [2024-09-15 20:25:29,915 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2024-09-15 20:25:29,916 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:25:29,918 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:25:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-15 20:25:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-09-15 20:25:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 82 states have internal predecessors, (82), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-09-15 20:25:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2024-09-15 20:25:29,937 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 68 [2024-09-15 20:25:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:29,938 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2024-09-15 20:25:29,938 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 20:25:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2024-09-15 20:25:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-15 20:25:29,944 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:29,945 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:29,963 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 20:25:30,148 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 [2024-09-15 20:25:30,149 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:30,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:30,149 INFO L85 PathProgramCache]: Analyzing trace with hash -949632177, now seen corresponding path program 1 times [2024-09-15 20:25:30,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:30,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364087061] [2024-09-15 20:25:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:30,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:30,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:25:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:31,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:31,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:31,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:32,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:32,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:32,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:32,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:33,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-09-15 20:25:34,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364087061] [2024-09-15 20:25:34,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364087061] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:34,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972746689] [2024-09-15 20:25:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:34,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:34,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:34,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:25:34,010 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-15 20:25:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:34,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-15 20:25:34,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-09-15 20:25:34,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:26:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-15 20:26:04,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972746689] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:26:04,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:26:04,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 43] total 47 [2024-09-15 20:26:04,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745359350] [2024-09-15 20:26:04,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:26:04,800 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-15 20:26:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:26:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-15 20:26:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2024-09-15 20:26:04,802 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) [2024-09-15 20:26:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:26:05,241 INFO L93 Difference]: Finished difference Result 692 states and 711 transitions. [2024-09-15 20:26:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-15 20:26:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) Word has length 123 [2024-09-15 20:26:05,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:26:05,247 INFO L225 Difference]: With dead ends: 692 [2024-09-15 20:26:05,248 INFO L226 Difference]: Without dead ends: 638 [2024-09-15 20:26:05,249 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 241 SyntacticMatches, 21 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1455, Invalid=3101, Unknown=0, NotChecked=0, Total=4556 [2024-09-15 20:26:05,250 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 371 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 20:26:05,250 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 78 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 20:26:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-09-15 20:26:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 125. [2024-09-15 20:26:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 84 states have internal predecessors, (84), 20 states have call successors, (20), 19 states have call predecessors, (20), 21 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-09-15 20:26:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2024-09-15 20:26:05,296 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 123 [2024-09-15 20:26:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:26:05,297 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2024-09-15 20:26:05,297 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) [2024-09-15 20:26:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2024-09-15 20:26:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-09-15 20:26:05,303 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:26:05,303 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:26:05,317 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-15 20:26:05,504 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 [2024-09-15 20:26:05,504 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:26:05,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:26:05,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1487103875, now seen corresponding path program 2 times [2024-09-15 20:26:05,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:26:05,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624200795] [2024-09-15 20:26:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:26:05,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:26:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:26:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:05,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:06,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:06,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:06,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:06,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:06,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:26:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:26:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-15 20:26:06,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:26:06,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624200795] [2024-09-15 20:26:06,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624200795] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:26:06,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:26:06,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 20:26:06,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483852288] [2024-09-15 20:26:06,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:26:06,026 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:26:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:26:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:26:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:26:06,027 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:26:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:26:06,044 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2024-09-15 20:26:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:26:06,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2024-09-15 20:26:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:26:06,046 INFO L225 Difference]: With dead ends: 123 [2024-09-15 20:26:06,046 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:26:06,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:26:06,047 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:26:06,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:26:06,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:26:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:26:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:26:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:26:06,050 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2024-09-15 20:26:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:26:06,050 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:26:06,050 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:26:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:26:06,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:26:06,053 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-09-15 20:26:06,053 INFO L785 garLoopResultBuilder]: Registering result SAFE for location sumErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining) [2024-09-15 20:26:06,053 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-15 20:26:06,056 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1] [2024-09-15 20:26:06,058 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:26:06,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:26:06 BoogieIcfgContainer [2024-09-15 20:26:06,062 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:26:06,063 INFO L158 Benchmark]: Toolchain (without parser) took 43833.39ms. Allocated memory was 69.2MB in the beginning and 289.4MB in the end (delta: 220.2MB). Free memory was 33.1MB in the beginning and 123.3MB in the end (delta: -90.2MB). Peak memory consumption was 131.0MB. Max. memory is 16.1GB. [2024-09-15 20:26:06,063 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 50.3MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:26:06,063 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 50.3MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:26:06,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.67ms. Allocated memory is still 69.2MB. Free memory was 50.9MB in the beginning and 38.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 20:26:06,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.76ms. Allocated memory is still 69.2MB. Free memory was 38.3MB in the beginning and 36.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:26:06,064 INFO L158 Benchmark]: Boogie Preprocessor took 29.29ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:26:06,064 INFO L158 Benchmark]: RCFGBuilder took 300.12ms. Allocated memory is still 69.2MB. Free memory was 35.5MB in the beginning and 44.6MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-15 20:26:06,065 INFO L158 Benchmark]: TraceAbstraction took 43197.13ms. Allocated memory was 69.2MB in the beginning and 289.4MB in the end (delta: 220.2MB). Free memory was 43.7MB in the beginning and 123.3MB in the end (delta: -79.6MB). Peak memory consumption was 141.1MB. Max. memory is 16.1GB. [2024-09-15 20:26:06,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 50.3MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 50.3MB. Free memory is still 31.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.67ms. Allocated memory is still 69.2MB. Free memory was 50.9MB in the beginning and 38.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.76ms. Allocated memory is still 69.2MB. Free memory was 38.3MB in the beginning and 36.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.29ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.12ms. Allocated memory is still 69.2MB. Free memory was 35.5MB in the beginning and 44.6MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 43197.13ms. Allocated memory was 69.2MB in the beginning and 289.4MB in the end (delta: 220.2MB). Free memory was 43.7MB in the beginning and 123.3MB in the end (delta: -79.6MB). Peak memory consumption was 141.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 5]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 43.1s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 823 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 815 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 294 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1449 IncrementalHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 294 mSolverCounterUnsat, 83 mSDtfsCounter, 1449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 456 SyntacticMatches, 23 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3414 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=7, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 548 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 38.6s InterpolantComputationTime, 676 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 844 ConstructedInterpolants, 0 QuantifiedInterpolants, 2162 SizeOfPredicates, 36 NumberOfNonLiveVariables, 804 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 3688/6268 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:26:06,101 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...