./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/apache-get-tag.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad8e21886f5f45a7c58400298498a881b4f628bf6fff913be81ab14cf250dd19 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 18:42:06,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 18:42:06,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 18:42:06,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 18:42:06,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 18:42:06,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 18:42:06,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 18:42:06,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 18:42:06,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 18:42:06,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 18:42:06,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 18:42:06,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 18:42:06,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 18:42:06,815 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 18:42:06,815 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 18:42:06,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 18:42:06,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 18:42:06,820 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 18:42:06,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 18:42:06,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 18:42:06,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 18:42:06,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 18:42:06,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 18:42:06,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 18:42:06,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 18:42:06,826 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 18:42:06,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 18:42:06,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 18:42:06,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 18:42:06,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 18:42:06,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 18:42:06,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 18:42:06,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:42:06,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 18:42:06,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 18:42:06,828 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 18:42:06,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 18:42:06,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 18:42:06,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 18:42:06,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 18:42:06,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 18:42:06,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 18:42:06,830 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad8e21886f5f45a7c58400298498a881b4f628bf6fff913be81ab14cf250dd19 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 18:42:07,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 18:42:07,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 18:42:07,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 18:42:07,189 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 18:42:07,190 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 18:42:07,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2024-09-15 18:42:08,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 18:42:08,972 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 18:42:08,972 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2024-09-15 18:42:08,979 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/751bb9a53/e51a23f027ad43079065ecfa511638e6/FLAG7d9e1efc5 [2024-09-15 18:42:08,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/751bb9a53/e51a23f027ad43079065ecfa511638e6 [2024-09-15 18:42:08,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 18:42:08,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 18:42:08,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 18:42:08,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 18:42:09,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 18:42:09,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:42:08" (1/1) ... [2024-09-15 18:42:09,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bfe150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09, skipping insertion in model container [2024-09-15 18:42:09,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:42:08" (1/1) ... [2024-09-15 18:42:09,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 18:42:09,195 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-invgen/apache-get-tag.i[893,906] [2024-09-15 18:42:09,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:42:09,233 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 18:42:09,247 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-invgen/apache-get-tag.i[893,906] [2024-09-15 18:42:09,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:42:09,275 INFO L204 MainTranslator]: Completed translation [2024-09-15 18:42:09,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09 WrapperNode [2024-09-15 18:42:09,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 18:42:09,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 18:42:09,277 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 18:42:09,277 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 18:42:09,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,297 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 18:42:09,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 18:42:09,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 18:42:09,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 18:42:09,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 18:42:09,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,339 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]. [2024-09-15 18:42:09,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 18:42:09,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 18:42:09,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 18:42:09,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 18:42:09,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (1/1) ... [2024-09-15 18:42:09,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:42:09,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:09,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 18:42:09,398 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 18:42:09,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 18:42:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 18:42:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 18:42:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 18:42:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 18:42:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 18:42:09,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 18:42:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 18:42:09,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 18:42:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 18:42:09,516 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 18:42:09,518 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 18:42:09,731 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-15 18:42:09,731 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 18:42:09,760 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 18:42:09,760 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-15 18:42:09,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:09 BoogieIcfgContainer [2024-09-15 18:42:09,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 18:42:09,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 18:42:09,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 18:42:09,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 18:42:09,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 06:42:08" (1/3) ... [2024-09-15 18:42:09,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38999832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:42:09, skipping insertion in model container [2024-09-15 18:42:09,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:09" (2/3) ... [2024-09-15 18:42:09,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38999832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:42:09, skipping insertion in model container [2024-09-15 18:42:09,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:09" (3/3) ... [2024-09-15 18:42:09,772 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2024-09-15 18:42:09,790 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 18:42:09,791 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 18:42:09,855 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 18:42:09,861 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a4d7df0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 18:42:09,861 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 18:42:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-15 18:42:09,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-15 18:42:09,882 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:09,883 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:09,883 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:09,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash 110287244, now seen corresponding path program 1 times [2024-09-15 18:42:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:09,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316850122] [2024-09-15 18:42:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:09,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:10,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316850122] [2024-09-15 18:42:10,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316850122] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:10,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:10,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 18:42:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270065751] [2024-09-15 18:42:10,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:10,059 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 18:42:10,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:10,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 18:42:10,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 18:42:10,084 INFO L87 Difference]: Start difference. First operand has 45 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 18:42:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:10,127 INFO L93 Difference]: Finished difference Result 84 states and 153 transitions. [2024-09-15 18:42:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 18:42:10,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-15 18:42:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:10,138 INFO L225 Difference]: With dead ends: 84 [2024-09-15 18:42:10,139 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 18:42:10,144 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 18:42:10,148 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:10,150 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 18:42:10,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 18:42:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 18:42:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 18 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2024-09-15 18:42:10,203 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 59 transitions. Word has length 11 [2024-09-15 18:42:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:10,205 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 59 transitions. [2024-09-15 18:42:10,205 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 18:42:10,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2024-09-15 18:42:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-15 18:42:10,207 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:10,207 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:10,208 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 18:42:10,208 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:10,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:10,212 INFO L85 PathProgramCache]: Analyzing trace with hash -907018424, now seen corresponding path program 1 times [2024-09-15 18:42:10,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:10,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787950150] [2024-09-15 18:42:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:10,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:10,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:10,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:10,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787950150] [2024-09-15 18:42:10,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787950150] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:10,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:10,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 18:42:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917363534] [2024-09-15 18:42:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:10,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 18:42:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 18:42:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 18:42:10,453 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 18:42:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:10,647 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2024-09-15 18:42:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 18:42:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-15 18:42:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:10,653 INFO L225 Difference]: With dead ends: 47 [2024-09-15 18:42:10,653 INFO L226 Difference]: Without dead ends: 45 [2024-09-15 18:42:10,654 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 18:42:10,655 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 17 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:10,656 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 117 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-15 18:42:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-09-15 18:42:10,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 27 states have internal predecessors, (31), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-15 18:42:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2024-09-15 18:42:10,686 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 12 [2024-09-15 18:42:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:10,687 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2024-09-15 18:42:10,687 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-15 18:42:10,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2024-09-15 18:42:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-15 18:42:10,690 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:10,690 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:10,690 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 18:42:10,690 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:10,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash -913744902, now seen corresponding path program 1 times [2024-09-15 18:42:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:10,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108806943] [2024-09-15 18:42:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:10,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:10,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-15 18:42:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:10,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108806943] [2024-09-15 18:42:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108806943] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:10,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:10,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 18:42:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485379068] [2024-09-15 18:42:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:10,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 18:42:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:10,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 18:42:10,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-15 18:42:10,892 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 18:42:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:11,038 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2024-09-15 18:42:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 18:42:11,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-09-15 18:42:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:11,042 INFO L225 Difference]: With dead ends: 60 [2024-09-15 18:42:11,042 INFO L226 Difference]: Without dead ends: 52 [2024-09-15 18:42:11,043 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-15 18:42:11,047 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 7 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:11,047 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 223 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 18:42:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-09-15 18:42:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-09-15 18:42:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-15 18:42:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2024-09-15 18:42:11,067 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 17 [2024-09-15 18:42:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:11,068 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2024-09-15 18:42:11,068 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 18:42:11,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2024-09-15 18:42:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-15 18:42:11,070 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:11,070 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:11,071 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 18:42:11,071 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:11,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1100343407, now seen corresponding path program 1 times [2024-09-15 18:42:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:11,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084373179] [2024-09-15 18:42:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:11,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:11,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-15 18:42:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:11,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-15 18:42:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:11,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-15 18:42:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:11,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:11,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084373179] [2024-09-15 18:42:11,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084373179] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:11,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010476357] [2024-09-15 18:42:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:11,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 18:42:11,407 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 18:42:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:11,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-15 18:42:11,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 18:42:11,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-09-15 18:42:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010476357] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:11,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-09-15 18:42:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703521838] [2024-09-15 18:42:11,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:11,853 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-15 18:42:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-15 18:42:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-15 18:42:11,855 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-15 18:42:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:12,164 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2024-09-15 18:42:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 18:42:12,164 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 32 [2024-09-15 18:42:12,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:12,165 INFO L225 Difference]: With dead ends: 78 [2024-09-15 18:42:12,165 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 18:42:12,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-09-15 18:42:12,167 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-15 18:42:12,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 184 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-15 18:42:12,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 18:42:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 18:42:12,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 18:42:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 18:42:12,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2024-09-15 18:42:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:12,170 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 18:42:12,170 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2024-09-15 18:42:12,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 18:42:12,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 18:42:12,174 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 18:42:12,192 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 18:42:12,378 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:12,381 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-09-15 18:42:12,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 18:42:12,805 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 18:42:12,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 06:42:12 BoogieIcfgContainer [2024-09-15 18:42:12,828 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 18:42:12,829 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 18:42:12,830 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 18:42:12,830 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 18:42:12,831 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:09" (3/4) ... [2024-09-15 18:42:12,833 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 18:42:12,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 18:42:12,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 18:42:12,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-15 18:42:12,840 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-09-15 18:42:12,842 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-09-15 18:42:12,842 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 18:42:12,842 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 18:42:12,932 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 18:42:12,935 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 18:42:12,935 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 18:42:12,936 INFO L158 Benchmark]: Toolchain (without parser) took 3941.49ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 40.8MB in the beginning and 55.8MB in the end (delta: -15.0MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2024-09-15 18:42:12,936 INFO L158 Benchmark]: CDTParser took 1.40ms. Allocated memory is still 46.1MB. Free memory was 22.3MB in the beginning and 22.3MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 18:42:12,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.30ms. Allocated memory is still 65.0MB. Free memory was 40.5MB in the beginning and 28.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 18:42:12,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.63ms. Allocated memory is still 65.0MB. Free memory was 28.7MB in the beginning and 27.8MB in the end (delta: 912.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 18:42:12,937 INFO L158 Benchmark]: Boogie Preprocessor took 57.70ms. Allocated memory is still 65.0MB. Free memory was 27.8MB in the beginning and 44.2MB in the end (delta: -16.4MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2024-09-15 18:42:12,937 INFO L158 Benchmark]: RCFGBuilder took 404.67ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 30.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-15 18:42:12,938 INFO L158 Benchmark]: TraceAbstraction took 3065.01ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 29.5MB in the beginning and 60.8MB in the end (delta: -31.3MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2024-09-15 18:42:12,938 INFO L158 Benchmark]: Witness Printer took 106.38ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 55.8MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 18:42:12,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40ms. Allocated memory is still 46.1MB. Free memory was 22.3MB in the beginning and 22.3MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.30ms. Allocated memory is still 65.0MB. Free memory was 40.5MB in the beginning and 28.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.63ms. Allocated memory is still 65.0MB. Free memory was 28.7MB in the beginning and 27.8MB in the end (delta: 912.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.70ms. Allocated memory is still 65.0MB. Free memory was 27.8MB in the beginning and 44.2MB in the end (delta: -16.4MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * RCFGBuilder took 404.67ms. Allocated memory is still 65.0MB. Free memory was 44.2MB in the beginning and 30.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3065.01ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 29.5MB in the beginning and 60.8MB in the end (delta: -31.3MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Witness Printer took 106.38ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 55.8MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. 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: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 588 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 409 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 348 IncrementalHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 179 mSDtfsCounter, 348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, InterpolantAutomatonStates: 24, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 417 SizeOfPredicates, 2 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 44/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((t <= tagbuf_len) && (0 <= t)) - InvariantResult [Line: 25]: Location Invariant Derived location invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((t <= tagbuf_len) && (0 <= t)) - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-15 18:42:12,969 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE