This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:30:16,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:30:16,680 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:30:16,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:30:16,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:30:16,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:30:16,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:30:16,719 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:30:16,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:30:16,720 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:30:16,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:30:16,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:30:16,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:30:16,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:30:16,725 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:30:16,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:30:16,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:30:16,725 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:30:16,726 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:30:16,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:30:16,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:30:16,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:30:16,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:30:16,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:30:16,730 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:30:16,730 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:30:16,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:30:16,731 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:30:16,731 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:30:16,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:30:16,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:30:16,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:30:16,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:30:16,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:30:16,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:30:16,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:30:16,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:30:16,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:30:16,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:30:16,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:30:16,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:30:16,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:30:16,735 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 13:30:17,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:30:17,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:30:17,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:30:17,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:30:17,034 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:30:17,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-acceleration/nested_1-1.c [2024-09-20 13:30:18,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:30:18,570 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:30:18,571 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-acceleration/nested_1-1.c [2024-09-20 13:30:18,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/4915ec77c/a9c4ae00e9974336b319e80c5d64ba0f/FLAG7e2881272 [2024-09-20 13:30:18,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/4915ec77c/a9c4ae00e9974336b319e80c5d64ba0f [2024-09-20 13:30:18,595 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 13:30:18,595 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 13:30:18,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/nested_1-1.yml/witness-2.1.yml [2024-09-20 13:30:18,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:30:18,644 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-20 13:30:18,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:30:18,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:30:18,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:30:18,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:18" (1/2) ... [2024-09-20 13:30:18,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bab2eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:18, skipping insertion in model container [2024-09-20 13:30:18,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:30:18" (1/2) ... [2024-09-20 13:30:18,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3511625d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:30:18, skipping insertion in model container [2024-09-20 13:30:18,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:30:18" (2/2) ... [2024-09-20 13:30:18,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bab2eeb and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18, skipping insertion in model container [2024-09-20 13:30:18,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:30:18" (2/2) ... [2024-09-20 13:30:18,661 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 13:30:18,664 INFO L1541 ArrayList]: Loop invariant at [L19-L21] ((x == 0) || ((x <= 268435454) && (((x + 4294967295) % 4294967296) <= 268435454))) [2024-09-20 13:30:18,664 INFO L1541 ArrayList]: Loop invariant at [L16-L24] ((x == 0) || (((x + 4294967295) % 4294967296) < 268435455)) [2024-09-20 13:30:18,665 INFO L1541 ArrayList]: Function contract at [L5]: requires ((0 <= \old(cond)) && (\old(cond) <= 1)), ensures ((0 <= \old(cond)) && (\old(cond) <= 1)) [2024-09-20 13:30:18,682 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:30:18,817 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/loop-acceleration/nested_1-1.c[322,335] [2024-09-20 13:30:18,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:30:18,837 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-20 13:30:18,863 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/loop-acceleration/nested_1-1.c[322,335] Start Parsing Local Start Parsing Local [2024-09-20 13:30:18,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:30:18,884 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:30:18,884 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18 WrapperNode [2024-09-20 13:30:18,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:30:18,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:30:18,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:30:18,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:30:18,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,918 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2024-09-20 13:30:18,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:30:18,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:30:18,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:30:18,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:30:18,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,935 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,951 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 13:30:18,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,969 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:30:18,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:30:18,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:30:18,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:30:18,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (1/1) ... [2024-09-20 13:30:18,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:30:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:19,000 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) [2024-09-20 13:30:19,002 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 [2024-09-20 13:30:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:30:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:30:19,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:30:19,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 13:30:19,090 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:30:19,091 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:30:19,264 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-20 13:30:19,264 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:30:19,283 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:30:19,283 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 13:30:19,283 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:19 BoogieIcfgContainer [2024-09-20 13:30:19,284 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:30:19,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:30:19,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:30:19,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:30:19,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:30:18" (1/4) ... [2024-09-20 13:30:19,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45efadc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:30:19, skipping insertion in model container [2024-09-20 13:30:19,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:30:18" (2/4) ... [2024-09-20 13:30:19,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45efadc5 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:30:19, skipping insertion in model container [2024-09-20 13:30:19,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:30:18" (3/4) ... [2024-09-20 13:30:19,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45efadc5 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:30:19, skipping insertion in model container [2024-09-20 13:30:19,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:30:19" (4/4) ... [2024-09-20 13:30:19,294 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_1-1.c [2024-09-20 13:30:19,311 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:30:19,311 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-20 13:30:19,354 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:30:19,362 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;@6bb2b029, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:30:19,363 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-20 13:30:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 16 states have internal predecessors, (21), 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) [2024-09-20 13:30:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-20 13:30:19,371 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:19,371 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-20 13:30:19,372 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:30:19,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2515, now seen corresponding path program 1 times [2024-09-20 13:30:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:19,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126395821] [2024-09-20 13:30:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:19,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126395821] [2024-09-20 13:30:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126395821] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:19,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-20 13:30:19,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520512457] [2024-09-20 13:30:19,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:19,579 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:30:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:30:19,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:30:19,604 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 16 states have internal predecessors, (21), 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) [2024-09-20 13:30:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:19,653 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-09-20 13:30:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:30:19,655 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 [2024-09-20 13:30:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:19,665 INFO L225 Difference]: With dead ends: 22 [2024-09-20 13:30:19,666 INFO L226 Difference]: Without dead ends: 21 [2024-09-20 13:30:19,669 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 [2024-09-20 13:30:19,673 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:19,674 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-20 13:30:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-09-20 13:30:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 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) [2024-09-20 13:30:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-09-20 13:30:19,703 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 2 [2024-09-20 13:30:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:19,703 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-09-20 13:30:19,704 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) [2024-09-20 13:30:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-09-20 13:30:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-20 13:30:19,704 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:19,704 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:19,705 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 13:30:19,705 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:30:19,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:19,706 INFO L85 PathProgramCache]: Analyzing trace with hash -970995673, now seen corresponding path program 1 times [2024-09-20 13:30:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991125177] [2024-09-20 13:30:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:19,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:19,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991125177] [2024-09-20 13:30:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991125177] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:19,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:30:19,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:30:19,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446913688] [2024-09-20 13:30:19,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:19,836 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:30:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:30:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:30:19,841 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-09-20 13:30:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:19,853 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-09-20 13:30:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:30:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-09-20 13:30:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:19,854 INFO L225 Difference]: With dead ends: 25 [2024-09-20 13:30:19,854 INFO L226 Difference]: Without dead ends: 25 [2024-09-20 13:30:19,855 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:30:19,856 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:19,857 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-20 13:30:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-09-20 13:30:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 23 states have internal predecessors, (27), 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) [2024-09-20 13:30:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-09-20 13:30:19,864 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2024-09-20 13:30:19,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:19,865 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-09-20 13:30:19,865 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-09-20 13:30:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-09-20 13:30:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-20 13:30:19,866 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:19,866 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:19,866 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:30:19,867 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:30:19,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1117430801, now seen corresponding path program 1 times [2024-09-20 13:30:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743108277] [2024-09-20 13:30:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:20,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743108277] [2024-09-20 13:30:20,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743108277] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:20,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154763406] [2024-09-20 13:30:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:20,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:20,046 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) [2024-09-20 13:30:20,048 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:30:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:20,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 13:30:20,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:20,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154763406] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:20,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-09-20 13:30:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416211775] [2024-09-20 13:30:20,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:20,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-20 13:30:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-20 13:30:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:30:20,199 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-09-20 13:30:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:20,243 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-09-20 13:30:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:30:20,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 9 [2024-09-20 13:30:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:20,247 INFO L225 Difference]: With dead ends: 40 [2024-09-20 13:30:20,247 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 13:30:20,247 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-09-20 13:30:20,248 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:20,248 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 13:30:20,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2024-09-20 13:30:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 35 states have internal predecessors, (42), 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) [2024-09-20 13:30:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-09-20 13:30:20,260 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 9 [2024-09-20 13:30:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:20,261 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-09-20 13:30:20,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-09-20 13:30:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-09-20 13:30:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 13:30:20,262 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:20,262 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:20,281 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:20,463 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:20,464 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:30:20,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:20,464 INFO L85 PathProgramCache]: Analyzing trace with hash 541403975, now seen corresponding path program 2 times [2024-09-20 13:30:20,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:20,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676157301] [2024-09-20 13:30:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:20,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:30:20,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:20,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676157301] [2024-09-20 13:30:20,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676157301] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:20,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186371383] [2024-09-20 13:30:20,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:30:20,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:20,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:20,662 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) [2024-09-20 13:30:20,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:30:20,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:30:20,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:30:20,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 13:30:20,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-20 13:30:20,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-09-20 13:30:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186371383] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:20,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:20,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 11 [2024-09-20 13:30:20,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839716376] [2024-09-20 13:30:20,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:20,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 13:30:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 13:30:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:30:20,828 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-09-20 13:30:21,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:21,193 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2024-09-20 13:30:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 13:30:21,193 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 15 [2024-09-20 13:30:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:21,194 INFO L225 Difference]: With dead ends: 56 [2024-09-20 13:30:21,194 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 13:30:21,195 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2024-09-20 13:30:21,196 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:21,196 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 59 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:30:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 13:30:21,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-20 13:30:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 55 states have internal predecessors, (59), 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) [2024-09-20 13:30:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2024-09-20 13:30:21,203 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 15 [2024-09-20 13:30:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:21,204 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2024-09-20 13:30:21,204 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-09-20 13:30:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2024-09-20 13:30:21,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-09-20 13:30:21,206 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:21,206 INFO L216 NwaCegarLoop]: trace histogram [18, 15, 4, 3, 3, 3, 1, 1, 1, 1] [2024-09-20 13:30:21,222 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 13:30:21,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:21,409 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:30:21,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash -412951364, now seen corresponding path program 1 times [2024-09-20 13:30:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119991829] [2024-09-20 13:30:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-09-20 13:30:21,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:21,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119991829] [2024-09-20 13:30:21,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119991829] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:21,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867379288] [2024-09-20 13:30:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:21,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:21,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:21,680 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) [2024-09-20 13:30:21,681 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:30:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:21,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-20 13:30:21,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-09-20 13:30:21,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:30:21,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867379288] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:21,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:30:21,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2024-09-20 13:30:21,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339580211] [2024-09-20 13:30:21,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:21,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:30:21,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:21,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:30:21,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:30:21,793 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-09-20 13:30:21,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:21,800 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2024-09-20 13:30:21,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:30:21,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 50 [2024-09-20 13:30:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:21,804 INFO L225 Difference]: With dead ends: 54 [2024-09-20 13:30:21,804 INFO L226 Difference]: Without dead ends: 53 [2024-09-20 13:30:21,804 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-09-20 13:30:21,805 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:21,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:21,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-09-20 13:30:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-09-20 13:30:21,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 52 states have internal predecessors, (56), 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) [2024-09-20 13:30:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2024-09-20 13:30:21,814 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 50 [2024-09-20 13:30:21,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:21,815 INFO L474 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2024-09-20 13:30:21,815 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-09-20 13:30:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2024-09-20 13:30:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-20 13:30:21,817 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:21,817 INFO L216 NwaCegarLoop]: trace histogram [18, 15, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:21,834 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 13:30:22,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:22,019 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:30:22,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1709267425, now seen corresponding path program 1 times [2024-09-20 13:30:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:22,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111538522] [2024-09-20 13:30:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:22,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-09-20 13:30:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111538522] [2024-09-20 13:30:22,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111538522] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736016515] [2024-09-20 13:30:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:22,292 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) [2024-09-20 13:30:22,295 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:30:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:22,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 13:30:22,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:22,550 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-09-20 13:30:22,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:30:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 16 proven. 243 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-09-20 13:30:22,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736016515] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:30:22,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:30:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2024-09-20 13:30:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454216533] [2024-09-20 13:30:22,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:30:22,888 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 13:30:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:22,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 13:30:22,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-09-20 13:30:22,890 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 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) [2024-09-20 13:30:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:24,302 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2024-09-20 13:30:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-20 13:30:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 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 52 [2024-09-20 13:30:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:24,303 INFO L225 Difference]: With dead ends: 144 [2024-09-20 13:30:24,304 INFO L226 Difference]: Without dead ends: 144 [2024-09-20 13:30:24,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1443 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=986, Invalid=3984, Unknown=0, NotChecked=0, Total=4970 [2024-09-20 13:30:24,306 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:24,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 64 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 13:30:24,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-20 13:30:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-20 13:30:24,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.062937062937063) internal successors, (152), 143 states have internal predecessors, (152), 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) [2024-09-20 13:30:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2024-09-20 13:30:24,315 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 52 [2024-09-20 13:30:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:24,315 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2024-09-20 13:30:24,315 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5) internal successors, (84), 24 states have internal predecessors, (84), 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) [2024-09-20 13:30:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2024-09-20 13:30:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-09-20 13:30:24,319 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:30:24,319 INFO L216 NwaCegarLoop]: trace histogram [56, 48, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-09-20 13:30:24,336 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 13:30:24,523 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:24,524 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:30:24,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:30:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash 54225755, now seen corresponding path program 2 times [2024-09-20 13:30:24,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:30:24,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954000560] [2024-09-20 13:30:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:30:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:30:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:30:24,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3180 backedges. 702 proven. 42 refuted. 0 times theorem prover too weak. 2436 trivial. 0 not checked. [2024-09-20 13:30:24,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:30:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954000560] [2024-09-20 13:30:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954000560] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:30:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051229531] [2024-09-20 13:30:24,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:30:24,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:30:24,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:30:24,930 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) [2024-09-20 13:30:24,932 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:30:24,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-20 13:30:24,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:30:24,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 13:30:24,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:30:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3180 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3172 trivial. 0 not checked. [2024-09-20 13:30:25,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:30:25,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051229531] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:30:25,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:30:25,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-09-20 13:30:25,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655774902] [2024-09-20 13:30:25,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:30:25,191 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 13:30:25,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:30:25,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 13:30:25,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-20 13:30:25,192 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-09-20 13:30:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:30:25,265 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2024-09-20 13:30:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:30:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 143 [2024-09-20 13:30:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:30:25,266 INFO L225 Difference]: With dead ends: 142 [2024-09-20 13:30:25,266 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:30:25,267 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:30:25,267 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:30:25,268 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 8 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:30:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:30:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:30:25,268 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) [2024-09-20 13:30:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:30:25,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2024-09-20 13:30:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:30:25,269 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:30:25,269 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2024-09-20 13:30:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:30:25,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:30:25,272 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-09-20 13:30:25,272 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-09-20 13:30:25,272 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONPRE_CONDITION (2 of 5 remaining) [2024-09-20 13:30:25,272 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-09-20 13:30:25,273 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONPOST_CONDITION (0 of 5 remaining) [2024-09-20 13:30:25,289 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 13:30:25,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 13:30:25,477 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-09-20 13:30:25,478 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:30:25,480 INFO L469 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-09-20 13:30:25,480 INFO L470 ceAbstractionStarter]: WitnessConsidered=2 [2024-09-20 13:30:25,480 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:30:25 BoogieIcfgContainer [2024-09-20 13:30:25,480 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:30:25,481 INFO L158 Benchmark]: Toolchain (without parser) took 6836.65ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 133.3MB in the beginning and 143.3MB in the end (delta: -10.0MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2024-09-20 13:30:25,481 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 89.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:30:25,481 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:30:25,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.15ms. Allocated memory is still 167.8MB. Free memory was 133.3MB in the beginning and 119.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-20 13:30:25,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.11ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 118.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:30:25,482 INFO L158 Benchmark]: Boogie Preprocessor took 54.14ms. Allocated memory is still 167.8MB. Free memory was 118.6MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:30:25,482 INFO L158 Benchmark]: RCFGBuilder took 308.85ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 133.2MB in the end (delta: -16.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 13:30:25,482 INFO L158 Benchmark]: TraceAbstraction took 6194.13ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 132.1MB in the beginning and 143.3MB in the end (delta: -11.2MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-09-20 13:30:25,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 89.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.15ms. Allocated memory is still 167.8MB. Free memory was 133.3MB in the beginning and 119.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.11ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 118.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.14ms. Allocated memory is still 167.8MB. Free memory was 118.6MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 308.85ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 133.2MB in the end (delta: -16.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6194.13ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 132.1MB in the beginning and 143.3MB in the end (delta: -11.2MB). Peak memory consumption was 24.2MB. 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: 16]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 5]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 7]: 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 1 procedures, 17 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 7, TraceHistogramMax: 56, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 151 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 151 mSDsluCounter, 257 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 183 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 841 IncrementalHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 74 mSDtfsCounter, 841 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 446 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=6, InterpolantAutomatonStates: 100, 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, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 547 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 608 ConstructedInterpolants, 2 QuantifiedInterpolants, 1450 SizeOfPredicates, 1 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 7406/8038 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! [2024-09-20 13:30:25,506 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...