./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0816346248b67d4ea9c17aaea510056f7cd51786d8081f1e3a68c606118ae1c9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:16:48,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:16:48,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:16:48,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:16:48,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:16:48,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:16:48,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:16:48,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:16:48,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:16:48,932 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:16:48,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:16:48,933 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:16:48,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:16:48,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:16:48,934 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:16:48,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:16:48,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:16:48,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:16:48,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:16:48,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:16:48,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:16:48,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:16:48,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:16:48,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:16:48,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:16:48,941 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:16:48,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:16:48,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:16:48,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:16:48,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:16:48,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:16:48,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:16:48,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:16:48,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:16:48,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:16:48,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:16:48,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:16:48,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:16:48,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:16:48,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:16:48,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:16:48,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:16:48,947 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0816346248b67d4ea9c17aaea510056f7cd51786d8081f1e3a68c606118ae1c9 [2024-11-18 13:16:49,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:16:49,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:16:49,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:16:49,255 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:16:49,255 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:16:49,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2024-11-18 13:16:50,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:16:50,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:16:50,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2024-11-18 13:16:50,948 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0f9f482/404c24cd565e4c7894730b14cd094afa/FLAG0c4a5edc4 [2024-11-18 13:16:50,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0f9f482/404c24cd565e4c7894730b14cd094afa [2024-11-18 13:16:50,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:16:50,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:16:50,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:16:50,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:16:50,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:16:50,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:16:50" (1/1) ... [2024-11-18 13:16:50,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff4d02f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:50, skipping insertion in model container [2024-11-18 13:16:50,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:16:50" (1/1) ... [2024-11-18 13:16:50,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:16:51,230 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2024-11-18 13:16:51,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:16:51,254 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:16:51,265 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2024-11-18 13:16:51,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:16:51,288 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:16:51,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51 WrapperNode [2024-11-18 13:16:51,289 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:16:51,290 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:16:51,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:16:51,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:16:51,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,320 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2024-11-18 13:16:51,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:16:51,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:16:51,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:16:51,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:16:51,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,342 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]. [2024-11-18 13:16:51,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:16:51,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:16:51,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:16:51,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:16:51,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (1/1) ... [2024-11-18 13:16:51,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:16:51,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:16:51,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:16:51,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:16:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:16:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:16:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:16:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:16:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-18 13:16:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-18 13:16:51,479 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:16:51,481 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:16:51,641 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 13:16:51,641 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:16:51,654 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:16:51,656 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:16:51,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:51 BoogieIcfgContainer [2024-11-18 13:16:51,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:16:51,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:16:51,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:16:51,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:16:51,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:16:50" (1/3) ... [2024-11-18 13:16:51,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ce6924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:16:51, skipping insertion in model container [2024-11-18 13:16:51,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:16:51" (2/3) ... [2024-11-18 13:16:51,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ce6924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:16:51, skipping insertion in model container [2024-11-18 13:16:51,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:51" (3/3) ... [2024-11-18 13:16:51,667 INFO L112 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2024-11-18 13:16:51,684 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:16:51,684 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:16:51,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:16:51,749 INFO L333 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=LoopHeads, 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;@13604f72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:16:51,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:16:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:16:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-18 13:16:51,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:16:51,765 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:16:51,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:16:51,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:16:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash 520960662, now seen corresponding path program 1 times [2024-11-18 13:16:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:16:51,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092773793] [2024-11-18 13:16:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:16:51,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:16:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:16:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:16:52,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:16:52,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092773793] [2024-11-18 13:16:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092773793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:16:52,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:16:52,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 13:16:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568439719] [2024-11-18 13:16:52,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:16:52,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:16:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:16:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:16:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:16:52,169 INFO L87 Difference]: Start difference. First operand has 24 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:16:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:16:52,278 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2024-11-18 13:16:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:16:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-18 13:16:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:16:52,285 INFO L225 Difference]: With dead ends: 44 [2024-11-18 13:16:52,285 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 13:16:52,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:16:52,291 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:16:52,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 121 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:16:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 13:16:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 13:16:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 13:16:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2024-11-18 13:16:52,321 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 15 [2024-11-18 13:16:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:16:52,321 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2024-11-18 13:16:52,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:16:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2024-11-18 13:16:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 13:16:52,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:16:52,322 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:16:52,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:16:52,323 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:16:52,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:16:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1333283339, now seen corresponding path program 1 times [2024-11-18 13:16:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:16:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293282946] [2024-11-18 13:16:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:16:52,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:16:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:16:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:16:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:16:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293282946] [2024-11-18 13:16:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293282946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:16:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:16:52,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 13:16:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490262358] [2024-11-18 13:16:52,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:16:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:16:52,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:16:52,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:16:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:16:52,557 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 13:16:52,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:16:52,645 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-11-18 13:16:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:16:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-18 13:16:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:16:52,649 INFO L225 Difference]: With dead ends: 35 [2024-11-18 13:16:52,649 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 13:16:52,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:16:52,653 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:16:52,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:16:52,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 13:16:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2024-11-18 13:16:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 13:16:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-18 13:16:52,670 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 20 [2024-11-18 13:16:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:16:52,670 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-18 13:16:52,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 13:16:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-18 13:16:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-18 13:16:52,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:16:52,673 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:16:52,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:16:52,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:16:52,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:16:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 74755898, now seen corresponding path program 1 times [2024-11-18 13:16:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:16:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292547857] [2024-11-18 13:16:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:16:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:16:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:16:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:16:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:16:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292547857] [2024-11-18 13:16:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292547857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:16:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720452000] [2024-11-18 13:16:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:16:52,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:16:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:16:52,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:16:52,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:16:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:16:53,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:16:53,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:16:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:16:53,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:16:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:16:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720452000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:16:53,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:16:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-18 13:16:53,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128785792] [2024-11-18 13:16:53,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:16:53,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:16:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:16:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:16:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:16:53,427 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 13:16:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:16:53,569 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-11-18 13:16:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 13:16:53,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 33 [2024-11-18 13:16:53,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:16:53,571 INFO L225 Difference]: With dead ends: 49 [2024-11-18 13:16:53,571 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 13:16:53,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:16:53,573 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:16:53,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 86 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:16:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 13:16:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-18 13:16:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 13:16:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-18 13:16:53,587 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 33 [2024-11-18 13:16:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:16:53,588 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-18 13:16:53,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-18 13:16:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-18 13:16:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 13:16:53,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:16:53,593 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:16:53,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 13:16:53,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:16:53,794 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:16:53,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:16:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -189356326, now seen corresponding path program 2 times [2024-11-18 13:16:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:16:53,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812526995] [2024-11-18 13:16:53,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:16:53,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:16:53,815 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:16:53,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:16:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-18 13:16:54,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:16:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812526995] [2024-11-18 13:16:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812526995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:16:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122404063] [2024-11-18 13:16:54,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:16:54,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:16:54,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:16:54,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:16:54,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:16:54,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:16:54,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:16:54,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 13:16:54,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:16:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 13:16:54,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:16:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 13:16:54,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122404063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:16:54,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:16:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 27 [2024-11-18 13:16:54,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121980229] [2024-11-18 13:16:54,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:16:54,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 13:16:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:16:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 13:16:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2024-11-18 13:16:54,710 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 9 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-18 13:16:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:16:54,990 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2024-11-18 13:16:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:16:54,991 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 9 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 59 [2024-11-18 13:16:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:16:54,992 INFO L225 Difference]: With dead ends: 52 [2024-11-18 13:16:54,992 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 13:16:54,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:16:54,994 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:16:54,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 165 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:16:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 13:16:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 13:16:54,996 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) [2024-11-18 13:16:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 13:16:54,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2024-11-18 13:16:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:16:54,996 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 13:16:54,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 9 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-18 13:16:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 13:16:54,997 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 13:16:55,000 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:16:55,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:16:55,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 13:16:55,204 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-18 13:16:55,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 13:16:55,334 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:16:55,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:16:55 BoogieIcfgContainer [2024-11-18 13:16:55,358 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:16:55,359 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:16:55,359 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:16:55,359 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:16:55,360 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:16:51" (3/4) ... [2024-11-18 13:16:55,362 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 13:16:55,367 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-18 13:16:55,371 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-18 13:16:55,371 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 13:16:55,372 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 13:16:55,372 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 13:16:55,454 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:16:55,454 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 13:16:55,455 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:16:55,455 INFO L158 Benchmark]: Toolchain (without parser) took 4487.63ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 99.9MB in the beginning and 145.4MB in the end (delta: -45.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:16:55,455 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:16:55,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.51ms. Allocated memory is still 163.6MB. Free memory was 99.5MB in the beginning and 132.2MB in the end (delta: -32.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 13:16:55,456 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.96ms. Allocated memory is still 163.6MB. Free memory was 132.2MB in the beginning and 131.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:16:55,456 INFO L158 Benchmark]: Boogie Preprocessor took 30.44ms. Allocated memory is still 163.6MB. Free memory was 131.0MB in the beginning and 129.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:16:55,457 INFO L158 Benchmark]: RCFGBuilder took 304.26ms. Allocated memory is still 163.6MB. Free memory was 129.2MB in the beginning and 117.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:16:55,457 INFO L158 Benchmark]: TraceAbstraction took 3698.31ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 116.7MB in the beginning and 149.6MB in the end (delta: -33.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2024-11-18 13:16:55,457 INFO L158 Benchmark]: Witness Printer took 95.95ms. Allocated memory is still 203.4MB. Free memory was 149.6MB in the beginning and 145.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 13:16:55,459 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.51ms. Allocated memory is still 163.6MB. Free memory was 99.5MB in the beginning and 132.2MB in the end (delta: -32.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.96ms. Allocated memory is still 163.6MB. Free memory was 132.2MB in the beginning and 131.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.44ms. Allocated memory is still 163.6MB. Free memory was 131.0MB in the beginning and 129.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.26ms. Allocated memory is still 163.6MB. Free memory was 129.2MB in the beginning and 117.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3698.31ms. Allocated memory was 163.6MB in the beginning and 203.4MB in the end (delta: 39.8MB). Free memory was 116.7MB in the beginning and 149.6MB in the end (delta: -33.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Witness Printer took 95.95ms. Allocated memory is still 203.4MB. Free memory was 149.6MB in the beginning and 145.4MB in the end (delta: 4.2MB). 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 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 457 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 363 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 381 IncrementalHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 94 mSDtfsCounter, 381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 159 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 303 ConstructedInterpolants, 0 QuantifiedInterpolants, 1145 SizeOfPredicates, 10 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 357/431 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: 49]: Loop Invariant Derived loop invariant: ((1 <= p) && ((p + ((long long) 2 * ielen)) <= (((long long) 2 * i) + bufsize_0))) - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-11-18 13:16:55,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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