This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:09:45,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:09:45,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:09:45,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:09:45,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:09:45,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:09:45,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:09:45,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:09:45,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:09:45,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:09:45,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:09:45,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:09:45,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:09:45,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:09:45,215 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:09:45,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:09:45,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:09:45,216 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:09:45,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:09:45,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:09:45,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:09:45,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:09:45,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:09:45,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:09:45,222 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:09:45,223 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:09:45,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:09:45,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:09:45,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:09:45,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:09:45,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:09:45,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:09:45,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:09:45,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:09:45,227 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:09:45,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:09:45,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:09:45,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:09:45,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:09:45,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:09:45,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:09:45,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:09:45,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:09:45,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:09:45,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:09:45,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:09:45,587 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:09:45,588 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:09:45,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/heavy-2.yml/witness-2.1.yml [2024-09-15 20:09:45,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:09:45,644 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:09:45,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/heavy-2.c [2024-09-15 20:09:47,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:09:47,458 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:09:47,459 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/heavy-2.c [2024-09-15 20:09:47,468 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/6f2cb4344/ae2dad8da1b24868bf307de59cf37bc7/FLAG0bcf1f144 [2024-09-15 20:09:47,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/6f2cb4344/ae2dad8da1b24868bf307de59cf37bc7 [2024-09-15 20:09:47,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:09:47,485 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:09:47,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:09:47,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:09:47,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:09:47,496 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 08:09:45" (1/2) ... [2024-09-15 20:09:47,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5489136b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:09:47, skipping insertion in model container [2024-09-15 20:09:47,498 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 08:09:45" (1/2) ... [2024-09-15 20:09:47,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61f0002d and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:09:47, skipping insertion in model container [2024-09-15 20:09:47,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:09:47" (2/2) ... [2024-09-15 20:09:47,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5489136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47, skipping insertion in model container [2024-09-15 20:09:47,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:09:47" (2/2) ... [2024-09-15 20:09:47,511 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:09:47,512 INFO L1541 ArrayList]: Loop invariant at [L14-L15] (a == 1) [2024-09-15 20:09:47,512 INFO L1541 ArrayList]: Location invariant before [L21-L21] 0 [2024-09-15 20:09:47,512 INFO L1541 ArrayList]: Loop invariant at [L13-L15] (a == 1) [2024-09-15 20:09:47,512 INFO L1541 ArrayList]: Loop invariant at [L12-L15] (a == 1) [2024-09-15 20:09:47,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:09:47,701 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/loops/heavy-2.c[600,613] [2024-09-15 20:09:47,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:09:47,791 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-15 20:09:47,836 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/loops/heavy-2.c[600,613] Start Parsing Local [2024-09-15 20:09:47,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:09:47,894 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:09:47,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47 WrapperNode [2024-09-15 20:09:47,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:09:47,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:09:47,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:09:47,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:09:47,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,929 INFO L138 Inliner]: procedures = 12, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2024-09-15 20:09:47,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:09:47,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:09:47,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:09:47,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:09:47,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,954 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-09-15 20:09:47,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:09:47,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:09:47,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:09:47,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:09:47,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (1/1) ... [2024-09-15 20:09:47,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:09:47,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:09:48,031 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 20:09:48,043 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 20:09:48,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-15 20:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-15 20:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:09:48,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-15 20:09:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-15 20:09:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 20:09:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-15 20:09:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-09-15 20:09:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-09-15 20:09:48,165 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:09:48,167 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:09:48,306 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-09-15 20:09:48,306 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:09:48,340 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:09:48,340 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-15 20:09:48,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:09:48 BoogieIcfgContainer [2024-09-15 20:09:48,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:09:48,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:09:48,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:09:48,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:09:48,356 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 08:09:45" (1/4) ... [2024-09-15 20:09:48,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4049a85f and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:09:48, skipping insertion in model container [2024-09-15 20:09:48,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:09:47" (2/4) ... [2024-09-15 20:09:48,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4049a85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:09:48, skipping insertion in model container [2024-09-15 20:09:48,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:09:47" (3/4) ... [2024-09-15 20:09:48,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4049a85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:09:48, skipping insertion in model container [2024-09-15 20:09:48,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:09:48" (4/4) ... [2024-09-15 20:09:48,358 INFO L112 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2024-09-15 20:09:48,373 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:09:48,373 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-15 20:09:48,410 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:09:48,417 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;@180b301b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:09:48,417 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-15 20:09:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 18 states have internal predecessors, (25), 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 20:09:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-15 20:09:48,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:09:48,428 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-15 20:09:48,429 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 2 more)] === [2024-09-15 20:09:48,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:09:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2825, now seen corresponding path program 1 times [2024-09-15 20:09:48,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:09:48,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377623532] [2024-09-15 20:09:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:09:48,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:09:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:09:48,714 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 20:09:48,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:09:48,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377623532] [2024-09-15 20:09:48,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377623532] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:09:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:09:48,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-15 20:09:48,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717156143] [2024-09-15 20:09:48,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:09:48,723 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:09:48,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:09:48,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:09:48,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:09:48,776 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 18 states have internal predecessors, (25), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 20:09:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:09:48,814 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2024-09-15 20:09:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:09:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2024-09-15 20:09:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:09:48,825 INFO L225 Difference]: With dead ends: 12 [2024-09-15 20:09:48,825 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:09:48,827 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:09:48,830 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:09:48,831 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:09:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:09:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:09:48,852 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 20:09:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:09:48,853 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2024-09-15 20:09:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:09:48,853 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:09:48,853 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 20:09:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:09:48,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:09:48,856 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-09-15 20:09:48,856 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-09-15 20:09:48,856 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 5 remaining) [2024-09-15 20:09:48,856 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 5 remaining) [2024-09-15 20:09:48,857 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-09-15 20:09:48,857 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:09:48,860 INFO L408 BasicCegarLoop]: Path program histogram: [1] [2024-09-15 20:09:48,862 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:09:48,864 INFO L469 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-09-15 20:09:48,864 INFO L470 ceAbstractionStarter]: WitnessConsidered=4 [2024-09-15 20:09:48,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:09:48 BoogieIcfgContainer [2024-09-15 20:09:48,865 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:09:48,866 INFO L158 Benchmark]: Toolchain (without parser) took 1381.31ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 34.5MB in the beginning and 41.2MB in the end (delta: -6.8MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2024-09-15 20:09:48,866 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:09:48,867 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:09:48,867 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.60ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 46.5MB in the end (delta: -12.2MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-09-15 20:09:48,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.19ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 44.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:09:48,868 INFO L158 Benchmark]: Boogie Preprocessor took 39.45ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 42.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:09:48,869 INFO L158 Benchmark]: RCFGBuilder took 370.30ms. Allocated memory is still 69.2MB. Free memory was 42.7MB in the beginning and 29.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 20:09:48,869 INFO L158 Benchmark]: TraceAbstraction took 512.60ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 41.2MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-09-15 20:09:48,872 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 0.20ms. Allocated memory is still 54.5MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.60ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 46.5MB in the end (delta: -12.2MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.19ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 44.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.45ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 42.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.30ms. Allocated memory is still 69.2MB. Free memory was 42.7MB in the beginning and 29.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 512.60ms. Allocated memory is still 86.0MB. Free memory was 65.2MB in the beginning and 41.2MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. 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: 12]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 13]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 14]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 21]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 7 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:09:48,926 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...