./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.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 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 02:01:29,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 02:01:29,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 02:01:29,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 02:01:29,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 02:01:29,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 02:01:29,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 02:01:29,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 02:01:29,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 02:01:29,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 02:01:29,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 02:01:29,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 02:01:29,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 02:01:29,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 02:01:29,269 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 02:01:29,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 02:01:29,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 02:01:29,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 02:01:29,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 02:01:29,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 02:01:29,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 02:01:29,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 02:01:29,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 02:01:29,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 02:01:29,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 02:01:29,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 02:01:29,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 02:01:29,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 02:01:29,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 02:01:29,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 02:01:29,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 02:01:29,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 02:01:29,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:01:29,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 02:01:29,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 02:01:29,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 02:01:29,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 02:01:29,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 02:01:29,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 02:01:29,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 02:01:29,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 02:01:29,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 02:01:29,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4c8975bee6324b0c0486aa99ba8be369d6762a33e8dd5b012191d5fa43c106 [2024-10-14 02:01:29,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 02:01:29,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 02:01:29,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 02:01:29,575 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 02:01:29,575 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 02:01:29,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i [2024-10-14 02:01:30,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 02:01:31,178 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 02:01:31,179 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_build.i [2024-10-14 02:01:31,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492d980cc/fd7d71b83d25479db2d8ac90e05f1ef4/FLAG6ee0179ce [2024-10-14 02:01:31,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492d980cc/fd7d71b83d25479db2d8ac90e05f1ef4 [2024-10-14 02:01:31,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 02:01:31,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 02:01:31,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 02:01:31,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 02:01:31,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 02:01:31,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe197a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31, skipping insertion in model container [2024-10-14 02:01:31,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 02:01:31,366 WARN L248 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/id_build.i[893,906] [2024-10-14 02:01:31,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:01:31,397 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 02:01:31,420 WARN L248 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/id_build.i[893,906] [2024-10-14 02:01:31,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:01:31,441 INFO L204 MainTranslator]: Completed translation [2024-10-14 02:01:31,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31 WrapperNode [2024-10-14 02:01:31,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 02:01:31,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 02:01:31,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 02:01:31,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 02:01:31,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,471 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2024-10-14 02:01:31,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 02:01:31,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 02:01:31,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 02:01:31,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 02:01:31,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,493 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]. [2024-10-14 02:01:31,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,502 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 02:01:31,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 02:01:31,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 02:01:31,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 02:01:31,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (1/1) ... [2024-10-14 02:01:31,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:01:31,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:01:31,551 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) [2024-10-14 02:01:31,554 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 [2024-10-14 02:01:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 02:01:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 02:01:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 02:01:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 02:01:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 02:01:31,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 02:01:31,649 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 02:01:31,651 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 02:01:31,804 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-14 02:01:31,805 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 02:01:31,825 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 02:01:31,825 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 02:01:31,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:01:31 BoogieIcfgContainer [2024-10-14 02:01:31,826 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 02:01:31,828 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 02:01:31,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 02:01:31,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 02:01:31,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:01:31" (1/3) ... [2024-10-14 02:01:31,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479cc68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:01:31, skipping insertion in model container [2024-10-14 02:01:31,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:01:31" (2/3) ... [2024-10-14 02:01:31,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479cc68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:01:31, skipping insertion in model container [2024-10-14 02:01:31,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:01:31" (3/3) ... [2024-10-14 02:01:31,834 INFO L112 eAbstractionObserver]: Analyzing ICFG id_build.i [2024-10-14 02:01:31,849 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 02:01:31,849 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 02:01:31,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 02:01:31,918 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;@222489, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 02:01:31,918 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 02:01:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 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) [2024-10-14 02:01:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 02:01:31,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:01:31,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:01:31,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:01:31,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:01:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash -822356528, now seen corresponding path program 1 times [2024-10-14 02:01:31,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:01:31,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629466247] [2024-10-14 02:01:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:01:31,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:01:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:01:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:01:32,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:01:32,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629466247] [2024-10-14 02:01:32,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629466247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:01:32,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:01:32,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:01:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588011412] [2024-10-14 02:01:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:01:32,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:01:32,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:01:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:01:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:01:32,286 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-10-14 02:01:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:01:32,358 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2024-10-14 02:01:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:01:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2024-10-14 02:01:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:01:32,368 INFO L225 Difference]: With dead ends: 33 [2024-10-14 02:01:32,368 INFO L226 Difference]: Without dead ends: 17 [2024-10-14 02:01:32,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:01:32,373 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:01:32,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:01:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-14 02:01:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-14 02:01:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2024-10-14 02:01:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-14 02:01:32,401 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2024-10-14 02:01:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:01:32,401 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-14 02:01:32,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-10-14 02:01:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-14 02:01:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 02:01:32,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:01:32,403 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:01:32,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 02:01:32,403 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:01:32,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:01:32,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1152830067, now seen corresponding path program 1 times [2024-10-14 02:01:32,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:01:32,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772990987] [2024-10-14 02:01:32,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:01:32,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:01:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:01:32,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-14 02:01:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:01:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:01:32,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:01:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772990987] [2024-10-14 02:01:32,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772990987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:01:32,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:01:32,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 02:01:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552442312] [2024-10-14 02:01:32,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:01:32,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 02:01:32,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:01:32,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 02:01:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 02:01:32,532 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-14 02:01:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:01:32,582 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-10-14 02:01:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 02:01:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2024-10-14 02:01:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:01:32,584 INFO L225 Difference]: With dead ends: 17 [2024-10-14 02:01:32,584 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 02:01:32,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 02:01:32,586 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:01:32,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:01:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 02:01:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 02:01:32,587 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) [2024-10-14 02:01:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 02:01:32,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2024-10-14 02:01:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:01:32,588 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 02:01:32,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-10-14 02:01:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 02:01:32,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 02:01:32,592 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 02:01:32,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 02:01:32,595 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 02:01:32,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-14 02:01:32,642 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 02:01:32,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:01:32 BoogieIcfgContainer [2024-10-14 02:01:32,662 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 02:01:32,663 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 02:01:32,663 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 02:01:32,663 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 02:01:32,664 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:01:31" (3/4) ... [2024-10-14 02:01:32,665 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 02:01:32,669 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-14 02:01:32,672 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-10-14 02:01:32,672 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-14 02:01:32,672 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 02:01:32,672 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 02:01:32,753 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 02:01:32,753 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 02:01:32,754 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 02:01:32,756 INFO L158 Benchmark]: Toolchain (without parser) took 1554.53ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 63.4MB in the end (delta: 34.4MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2024-10-14 02:01:32,757 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:01:32,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.29ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 85.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 02:01:32,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.75ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 83.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:01:32,761 INFO L158 Benchmark]: Boogie Preprocessor took 36.95ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 82.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:01:32,761 INFO L158 Benchmark]: RCFGBuilder took 316.37ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 108.7MB in the end (delta: -26.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 02:01:32,762 INFO L158 Benchmark]: TraceAbstraction took 834.44ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 67.6MB in the end (delta: 41.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-10-14 02:01:32,762 INFO L158 Benchmark]: Witness Printer took 90.81ms. Allocated memory is still 142.6MB. Free memory was 67.6MB in the beginning and 63.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 02:01:32,764 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.29ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 85.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.75ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 83.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.95ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 82.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.37ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 108.7MB in the end (delta: -26.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 834.44ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 67.6MB in the end (delta: 41.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 90.81ms. Allocated memory is still 142.6MB. Free memory was 67.6MB in the beginning and 63.4MB 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, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 21 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=1, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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: 27]: Loop Invariant Derived loop invariant: (0 < ((long long) i + 1)) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((0 <= i) && (((long long) i + 1) <= nlen)) - 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! [2024-10-14 02:01:32,795 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