./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_2x3-2.c --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/recursive-simple/sum_2x3-2.c -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 1d9b45804bf1a403fd87b7e9f0e2fc3ea97d36c9de0ccb522dbdc14d8252502f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 03:15:39,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 03:15:39,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 03:15:39,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 03:15:39,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 03:15:39,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 03:15:39,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 03:15:39,461 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 03:15:39,462 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 03:15:39,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 03:15:39,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 03:15:39,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 03:15:39,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 03:15:39,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 03:15:39,465 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 03:15:39,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 03:15:39,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 03:15:39,466 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 03:15:39,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 03:15:39,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 03:15:39,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 03:15:39,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 03:15:39,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 03:15:39,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 03:15:39,468 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 03:15:39,468 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 03:15:39,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 03:15:39,468 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 03:15:39,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 03:15:39,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 03:15:39,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 03:15:39,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 03:15:39,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:15:39,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 03:15:39,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 03:15:39,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 03:15:39,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 03:15:39,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 03:15:39,471 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 03:15:39,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 03:15:39,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 03:15:39,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 03:15:39,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d9b45804bf1a403fd87b7e9f0e2fc3ea97d36c9de0ccb522dbdc14d8252502f [2024-10-14 03:15:39,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 03:15:39,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 03:15:39,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 03:15:39,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 03:15:39,733 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 03:15:39,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_2x3-2.c [2024-10-14 03:15:40,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 03:15:41,071 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 03:15:41,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_2x3-2.c [2024-10-14 03:15:41,077 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1c74e367/f877cdc54c364576920ee40bad8ab12a/FLAG4afaf4d2b [2024-10-14 03:15:41,089 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1c74e367/f877cdc54c364576920ee40bad8ab12a [2024-10-14 03:15:41,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 03:15:41,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 03:15:41,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 03:15:41,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 03:15:41,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 03:15:41,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33446615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41, skipping insertion in model container [2024-10-14 03:15:41,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 03:15:41,226 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/recursive-simple/sum_2x3-2.c[479,492] [2024-10-14 03:15:41,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:15:41,237 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 03:15:41,247 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/recursive-simple/sum_2x3-2.c[479,492] [2024-10-14 03:15:41,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 03:15:41,262 INFO L204 MainTranslator]: Completed translation [2024-10-14 03:15:41,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41 WrapperNode [2024-10-14 03:15:41,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 03:15:41,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 03:15:41,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 03:15:41,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 03:15:41,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,284 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-10-14 03:15:41,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 03:15:41,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 03:15:41,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 03:15:41,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 03:15:41,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,295 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,305 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 03:15:41,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,312 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,313 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 03:15:41,315 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 03:15:41,315 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 03:15:41,315 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 03:15:41,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (1/1) ... [2024-10-14 03:15:41,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 03:15:41,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:15:41,345 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 03:15:41,348 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 03:15:41,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 03:15:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 03:15:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 03:15:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-10-14 03:15:41,384 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-10-14 03:15:41,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 03:15:41,432 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 03:15:41,433 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 03:15:41,496 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-14 03:15:41,496 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 03:15:41,515 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 03:15:41,515 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 03:15:41,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:15:41 BoogieIcfgContainer [2024-10-14 03:15:41,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 03:15:41,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 03:15:41,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 03:15:41,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 03:15:41,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:15:41" (1/3) ... [2024-10-14 03:15:41,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a090737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:15:41, skipping insertion in model container [2024-10-14 03:15:41,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:15:41" (2/3) ... [2024-10-14 03:15:41,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a090737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:15:41, skipping insertion in model container [2024-10-14 03:15:41,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:15:41" (3/3) ... [2024-10-14 03:15:41,523 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2024-10-14 03:15:41,547 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 03:15:41,547 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 03:15:41,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 03:15:41,624 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;@1fd476dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 03:15:41,624 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 03:15:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 03:15:41,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 03:15:41,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:15:41,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:15:41,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:15:41,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:15:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2024-10-14 03:15:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:15:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663610332] [2024-10-14 03:15:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:15:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:15:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:41,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:15:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:41,871 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 03:15:41,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:15:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663610332] [2024-10-14 03:15:41,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663610332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 03:15:41,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 03:15:41,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 03:15:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62547678] [2024-10-14 03:15:41,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 03:15:41,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 03:15:41,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:15:41,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 03:15:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 03:15:41,900 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 03:15:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:15:41,966 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-10-14 03:15:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 03:15:41,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-10-14 03:15:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:15:41,976 INFO L225 Difference]: With dead ends: 22 [2024-10-14 03:15:41,976 INFO L226 Difference]: Without dead ends: 14 [2024-10-14 03:15:41,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 03:15:41,982 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 03:15:41,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:15:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-10-14 03:15:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-10-14 03:15:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 03:15:42,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-10-14 03:15:42,010 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2024-10-14 03:15:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:15:42,011 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-10-14 03:15:42,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 03:15:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-10-14 03:15:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 03:15:42,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:15:42,012 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:15:42,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 03:15:42,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:15:42,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:15:42,014 INFO L85 PathProgramCache]: Analyzing trace with hash -642736818, now seen corresponding path program 1 times [2024-10-14 03:15:42,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:15:42,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131215519] [2024-10-14 03:15:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:15:42,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:15:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:42,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:15:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:42,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:15:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 03:15:42,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:15:42,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131215519] [2024-10-14 03:15:42,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131215519] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:15:42,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827211648] [2024-10-14 03:15:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:15:42,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:15:42,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:15:42,199 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) [2024-10-14 03:15:42,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 03:15:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:42,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 03:15:42,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:15:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 03:15:42,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:15:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 03:15:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827211648] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:15:42,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:15:42,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2024-10-14 03:15:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138071211] [2024-10-14 03:15:42,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:15:42,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 03:15:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:15:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 03:15:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 03:15:42,511 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-14 03:15:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:15:42,565 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2024-10-14 03:15:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 03:15:42,566 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 15 [2024-10-14 03:15:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:15:42,567 INFO L225 Difference]: With dead ends: 21 [2024-10-14 03:15:42,567 INFO L226 Difference]: Without dead ends: 17 [2024-10-14 03:15:42,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-14 03:15:42,569 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 03:15:42,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:15:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-14 03:15:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-14 03:15:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 03:15:42,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-14 03:15:42,574 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2024-10-14 03:15:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:15:42,576 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-14 03:15:42,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-14 03:15:42,576 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-14 03:15:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 03:15:42,578 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:15:42,578 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:15:42,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 03:15:42,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:15:42,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:15:42,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:15:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2123675004, now seen corresponding path program 2 times [2024-10-14 03:15:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:15:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589272038] [2024-10-14 03:15:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:15:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:15:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:42,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:15:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:43,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:15:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:43,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:15:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 03:15:43,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:15:43,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589272038] [2024-10-14 03:15:43,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589272038] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:15:43,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519995350] [2024-10-14 03:15:43,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 03:15:43,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:15:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:15:43,228 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) [2024-10-14 03:15:43,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 03:15:43,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 03:15:43,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 03:15:43,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-14 03:15:43,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:15:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 03:15:43,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:15:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 03:15:43,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519995350] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:15:43,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:15:43,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2024-10-14 03:15:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755455794] [2024-10-14 03:15:43,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:15:43,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 03:15:43,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:15:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 03:15:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-10-14 03:15:43,784 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 16 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 03:15:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:15:43,992 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-10-14 03:15:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 03:15:43,994 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 16 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 21 [2024-10-14 03:15:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:15:43,995 INFO L225 Difference]: With dead ends: 24 [2024-10-14 03:15:43,995 INFO L226 Difference]: Without dead ends: 20 [2024-10-14 03:15:43,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-10-14 03:15:43,996 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 03:15:43,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 03:15:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-14 03:15:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-14 03:15:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-14 03:15:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-10-14 03:15:44,002 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2024-10-14 03:15:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:15:44,002 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-10-14 03:15:44,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 16 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-14 03:15:44,003 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-10-14 03:15:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 03:15:44,004 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 03:15:44,004 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 03:15:44,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 03:15:44,205 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,SelfDestructingSolverStorable2 [2024-10-14 03:15:44,205 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 03:15:44,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 03:15:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash 54189198, now seen corresponding path program 3 times [2024-10-14 03:15:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 03:15:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579630498] [2024-10-14 03:15:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 03:15:44,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 03:15:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:44,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 03:15:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:44,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:15:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:44,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:15:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:44,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-14 03:15:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 03:15:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 03:15:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 03:15:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579630498] [2024-10-14 03:15:44,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579630498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 03:15:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569273902] [2024-10-14 03:15:44,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 03:15:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:15:44,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 03:15:44,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 03:15:44,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 03:15:44,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-14 03:15:44,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 03:15:44,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 03:15:44,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 03:15:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-14 03:15:44,450 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 03:15:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 03:15:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569273902] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 03:15:44,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 03:15:44,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 13 [2024-10-14 03:15:44,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793907481] [2024-10-14 03:15:44,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 03:15:44,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 03:15:44,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 03:15:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 03:15:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-14 03:15:44,689 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 10 states have (on average 2.6) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2024-10-14 03:15:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 03:15:44,733 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-10-14 03:15:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 03:15:44,733 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) Word has length 27 [2024-10-14 03:15:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 03:15:44,733 INFO L225 Difference]: With dead ends: 30 [2024-10-14 03:15:44,734 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 03:15:44,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-10-14 03:15:44,735 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 03:15:44,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 03:15:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 03:15:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 03:15:44,736 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 03:15:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 03:15:44,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2024-10-14 03:15:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 03:15:44,736 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 03:15:44,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.6) internal successors, (26), 13 states have internal predecessors, (26), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (10), 4 states have call predecessors, (10), 8 states have call successors, (10) [2024-10-14 03:15:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 03:15:44,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 03:15:44,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 03:15:44,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 03:15:44,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 03:15:44,942 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-14 03:15:44,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-14 03:15:45,041 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 03:15:45,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 03:15:45 BoogieIcfgContainer [2024-10-14 03:15:45,061 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 03:15:45,062 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 03:15:45,063 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 03:15:45,064 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 03:15:45,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:15:41" (3/4) ... [2024-10-14 03:15:45,065 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 03:15:45,069 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2024-10-14 03:15:45,072 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-14 03:15:45,072 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-14 03:15:45,072 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 03:15:45,073 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 03:15:45,138 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 03:15:45,138 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 03:15:45,138 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 03:15:45,139 INFO L158 Benchmark]: Toolchain (without parser) took 4046.70ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 142.6MB in the beginning and 79.8MB in the end (delta: 62.8MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2024-10-14 03:15:45,139 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 75.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 03:15:45,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.71ms. Allocated memory is still 176.2MB. Free memory was 141.7MB in the beginning and 130.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 03:15:45,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.53ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 129.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 03:15:45,139 INFO L158 Benchmark]: Boogie Preprocessor took 28.87ms. Allocated memory is still 176.2MB. Free memory was 128.1MB in the beginning and 127.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 03:15:45,140 INFO L158 Benchmark]: RCFGBuilder took 200.67ms. Allocated memory is still 176.2MB. Free memory was 127.1MB in the beginning and 116.6MB in the end (delta: 10.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 03:15:45,140 INFO L158 Benchmark]: TraceAbstraction took 3544.77ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 115.5MB in the beginning and 84.0MB in the end (delta: 31.5MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2024-10-14 03:15:45,140 INFO L158 Benchmark]: Witness Printer took 76.39ms. Allocated memory is still 211.8MB. Free memory was 84.0MB in the beginning and 79.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 03:15:45,142 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory was 75.2MB in the beginning and 75.0MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.71ms. Allocated memory is still 176.2MB. Free memory was 141.7MB in the beginning and 130.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.53ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 129.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.87ms. Allocated memory is still 176.2MB. Free memory was 128.1MB in the beginning and 127.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 200.67ms. Allocated memory is still 176.2MB. Free memory was 127.1MB in the beginning and 116.6MB in the end (delta: 10.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3544.77ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 115.5MB in the beginning and 84.0MB in the end (delta: 31.5MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * Witness Printer took 76.39ms. Allocated memory is still 211.8MB. Free memory was 84.0MB in the beginning and 79.8MB 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: 18]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 313 IncrementalHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 33 mSDtfsCounter, 313 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 32, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 665 SizeOfPredicates, 8 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 96/144 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 - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum. Ensures: (((((\result == ((long long) 2 + m)) && (2 == n)) || ((\result <= m) && (((long long) n + m) <= \result))) || ((\result == ((long long) m + 1)) && (n == 1))) || (2 < n)) RESULT: Ultimate proved your program to be correct! [2024-10-14 03:15:45,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE