./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/recursified_loop-simple/recursified_nested_2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:13:23,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:13:24,024 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:13:24,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:13:24,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:13:24,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:13:24,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:13:24,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:13:24,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:13:24,065 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:13:24,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:13:24,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:13:24,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:13:24,068 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:13:24,069 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:13:24,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:13:24,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:13:24,070 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:13:24,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:13:24,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:13:24,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:13:24,074 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:13:24,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:13:24,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:13:24,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:13:24,075 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:13:24,076 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:13:24,076 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:13:24,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:13:24,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:13:24,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:13:24,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:13:24,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:13:24,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:13:24,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:13:24,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:13:24,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:13:24,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:13:24,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:13:24,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:13:24,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:13:24,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:13:24,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:13:24,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:13:24,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b [2024-10-14 21:13:24,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:13:24,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:13:24,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:13:24,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:13:24,372 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:13:24,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-10-14 21:13:25,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:13:26,027 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:13:26,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-10-14 21:13:26,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/036c2ad27/2c685d917423483997b9f0708a9a4b0b/FLAG09d09a478 [2024-10-14 21:13:26,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/036c2ad27/2c685d917423483997b9f0708a9a4b0b [2024-10-14 21:13:26,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:13:26,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:13:26,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:13:26,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:13:26,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:13:26,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1c6c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26, skipping insertion in model container [2024-10-14 21:13:26,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:13:26,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:13:26,272 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:13:26,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:13:26,313 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:13:26,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26 WrapperNode [2024-10-14 21:13:26,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:13:26,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:13:26,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:13:26,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:13:26,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,344 INFO L138 Inliner]: procedures = 13, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-10-14 21:13:26,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:13:26,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:13:26,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:13:26,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:13:26,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,356 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,368 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1]. The 4 writes are split as follows [0, 2, 2]. [2024-10-14 21:13:26,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:13:26,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:13:26,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:13:26,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:13:26,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (1/1) ... [2024-10-14 21:13:26,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:13:26,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:26,409 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 21:13:26,412 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 21:13:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:13:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:13:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:13:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:13:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:13:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:13:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:13:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:13:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-10-14 21:13:26,454 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-10-14 21:13:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:13:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:13:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:13:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:13:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:13:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-10-14 21:13:26,455 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-10-14 21:13:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:13:26,533 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:13:26,534 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:13:26,665 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-14 21:13:26,665 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:13:26,689 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:13:26,689 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 21:13:26,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:26 BoogieIcfgContainer [2024-10-14 21:13:26,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:13:26,692 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:13:26,692 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:13:26,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:13:26,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:26" (1/3) ... [2024-10-14 21:13:26,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a685ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:26, skipping insertion in model container [2024-10-14 21:13:26,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:26" (2/3) ... [2024-10-14 21:13:26,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a685ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:26, skipping insertion in model container [2024-10-14 21:13:26,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:26" (3/3) ... [2024-10-14 21:13:26,701 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-10-14 21:13:26,717 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:13:26,717 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 21:13:26,784 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:13:26,792 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;@3413d5fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:13:26,792 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 21:13:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.5) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 21:13:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 21:13:26,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:26,809 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:26,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-10-14 21:13:26,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:26,815 INFO L85 PathProgramCache]: Analyzing trace with hash -488469868, now seen corresponding path program 1 times [2024-10-14 21:13:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855554560] [2024-10-14 21:13:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:27,361 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 21:13:27,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:27,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855554560] [2024-10-14 21:13:27,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855554560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:27,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:27,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:13:27,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829305161] [2024-10-14 21:13:27,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:27,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:13:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:13:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:13:27,389 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.5) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:13:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:27,506 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2024-10-14 21:13:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:13:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 21:13:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:27,517 INFO L225 Difference]: With dead ends: 57 [2024-10-14 21:13:27,517 INFO L226 Difference]: Without dead ends: 25 [2024-10-14 21:13:27,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:13:27,525 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:27,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 108 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:13:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-14 21:13:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-10-14 21:13:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:13:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-10-14 21:13:27,566 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2024-10-14 21:13:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:27,567 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-10-14 21:13:27,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:13:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-10-14 21:13:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 21:13:27,568 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:27,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:27,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:13:27,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_21_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-10-14 21:13:27,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2037303351, now seen corresponding path program 1 times [2024-10-14 21:13:27,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:27,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230772949] [2024-10-14 21:13:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:27,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:27,690 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 21:13:27,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:27,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230772949] [2024-10-14 21:13:27,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230772949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:27,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 21:13:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883201762] [2024-10-14 21:13:27,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:27,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 21:13:27,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 21:13:27,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 21:13:27,699 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:13:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:27,726 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-10-14 21:13:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 21:13:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 21:13:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:27,728 INFO L225 Difference]: With dead ends: 23 [2024-10-14 21:13:27,729 INFO L226 Difference]: Without dead ends: 22 [2024-10-14 21:13:27,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 21:13:27,732 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:27,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:13:27,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-14 21:13:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-14 21:13:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:13:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-14 21:13:27,738 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2024-10-14 21:13:27,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:27,738 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-14 21:13:27,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:13:27,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-14 21:13:27,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-14 21:13:27,739 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:27,740 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:27,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 21:13:27,740 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-10-14 21:13:27,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash 402286886, now seen corresponding path program 1 times [2024-10-14 21:13:27,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:27,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151153224] [2024-10-14 21:13:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:13:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:28,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151153224] [2024-10-14 21:13:28,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151153224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:28,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:28,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:13:28,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596125085] [2024-10-14 21:13:28,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:28,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:13:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:13:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:13:28,002 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:13:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:28,117 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-10-14 21:13:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:13:28,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-14 21:13:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:28,121 INFO L225 Difference]: With dead ends: 28 [2024-10-14 21:13:28,122 INFO L226 Difference]: Without dead ends: 27 [2024-10-14 21:13:28,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 21:13:28,123 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:28,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:13:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-14 21:13:28,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-10-14 21:13:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 21:13:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-10-14 21:13:28,131 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2024-10-14 21:13:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:28,132 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-10-14 21:13:28,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 21:13:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-10-14 21:13:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 21:13:28,133 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:28,133 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:28,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 21:13:28,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-10-14 21:13:28,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash -986541066, now seen corresponding path program 1 times [2024-10-14 21:13:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:28,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130673382] [2024-10-14 21:13:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:13:28,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130673382] [2024-10-14 21:13:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130673382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:28,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:13:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956527938] [2024-10-14 21:13:28,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:28,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:13:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:28,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:13:28,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:13:28,270 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:13:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:28,382 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-10-14 21:13:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:13:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-10-14 21:13:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:28,384 INFO L225 Difference]: With dead ends: 30 [2024-10-14 21:13:28,384 INFO L226 Difference]: Without dead ends: 28 [2024-10-14 21:13:28,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:13:28,387 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:28,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 51 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:13:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-14 21:13:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-10-14 21:13:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-14 21:13:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-10-14 21:13:28,393 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2024-10-14 21:13:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:28,394 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-10-14 21:13:28,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:13:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-10-14 21:13:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-14 21:13:28,395 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:28,395 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:28,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 21:13:28,395 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-10-14 21:13:28,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:28,396 INFO L85 PathProgramCache]: Analyzing trace with hash -739348388, now seen corresponding path program 1 times [2024-10-14 21:13:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:28,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877306039] [2024-10-14 21:13:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-14 21:13:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 21:13:28,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:28,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877306039] [2024-10-14 21:13:28,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877306039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:13:28,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785701702] [2024-10-14 21:13:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:28,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:28,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:28,769 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 21:13:28,771 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 21:13:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:28,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 21:13:28,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:28,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-14 21:13:29,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-14 21:13:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 21:13:29,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:29,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785701702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:29,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:13:29,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-10-14 21:13:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461489703] [2024-10-14 21:13:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:29,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:13:29,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:13:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-14 21:13:29,127 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-14 21:13:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:29,231 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-10-14 21:13:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:13:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-10-14 21:13:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:29,233 INFO L225 Difference]: With dead ends: 29 [2024-10-14 21:13:29,233 INFO L226 Difference]: Without dead ends: 28 [2024-10-14 21:13:29,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-10-14 21:13:29,235 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:29,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:13:29,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-14 21:13:29,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-10-14 21:13:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-14 21:13:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-10-14 21:13:29,243 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 36 [2024-10-14 21:13:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:29,243 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-10-14 21:13:29,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-14 21:13:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-10-14 21:13:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 21:13:29,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:29,245 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 21:13:29,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 21:13:29,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:29,449 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-10-14 21:13:29,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:29,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1444963509, now seen corresponding path program 1 times [2024-10-14 21:13:29,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:29,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803352976] [2024-10-14 21:13:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:29,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:29,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:29,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:29,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-14 21:13:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:29,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-14 21:13:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 21:13:29,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803352976] [2024-10-14 21:13:29,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803352976] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:13:29,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716797954] [2024-10-14 21:13:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:29,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:29,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:29,748 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 21:13:29,750 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 21:13:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:29,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 21:13:29,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:29,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 21:13:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-14 21:13:29,987 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:29,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716797954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:29,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 21:13:29,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-14 21:13:29,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211799070] [2024-10-14 21:13:29,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:29,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:13:29,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:13:29,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-14 21:13:29,989 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-14 21:13:34,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:13:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:34,076 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-10-14 21:13:34,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 21:13:34,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2024-10-14 21:13:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:34,079 INFO L225 Difference]: With dead ends: 27 [2024-10-14 21:13:34,079 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 21:13:34,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-14 21:13:34,080 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:34,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 37 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-10-14 21:13:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 21:13:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 21:13:34,082 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 21:13:34,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 21:13:34,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2024-10-14 21:13:34,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:34,083 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 21:13:34,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-14 21:13:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 21:13:34,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 21:13:34,086 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-10-14 21:13:34,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-10-14 21:13:34,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-10-14 21:13:34,087 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-10-14 21:13:34,105 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 21:13:34,291 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,SelfDestructingSolverStorable5 [2024-10-14 21:13:34,294 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-14 21:13:34,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-14 21:13:34,645 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 21:13:34,655 WARN L155 FloydHoareUtils]: Requires clause for func_to_recursive_line_20_to_21_0 contained old-variable. Original clause: (let ((.cse1 (select (select |#memory_int#2| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|)) (.cse0 (select (select |old(#memory_int#2)| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|))) (and (<= 0 (+ .cse0 2147483648)) (= |#memory_int#1| |old(#memory_int#1)|) (<= 0 (+ .cse1 2147483648)) (or (= .cse1 0) (not (= .cse0 0))))) Eliminated clause: (let ((.cse1 (select (select |#memory_int#2| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|))) (and (exists ((|old(#memory_int#2)| (Array Int (Array Int Int)))) (let ((.cse0 (select (select |old(#memory_int#2)| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|))) (and (<= 0 (+ .cse0 2147483648)) (or (= .cse1 0) (not (= .cse0 0)))))) (<= 0 (+ .cse1 2147483648)))) [2024-10-14 21:13:34,662 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-14 21:13:34,664 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#2 [2024-10-14 21:13:34,668 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] [2024-10-14 21:13:34,668 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-10-14 21:13:34,669 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#2 [2024-10-14 21:13:34,669 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] [2024-10-14 21:13:34,669 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~a!base,]]] [2024-10-14 21:13:34,673 WARN L155 FloydHoareUtils]: Requires clause for func_to_recursive_line_21_to_21_0 contained old-variable. Original clause: (and (<= 0 (+ (select (select |old(#memory_int#1)| |func_to_recursive_line_21_to_21_0_#in~b.base|) |func_to_recursive_line_21_to_21_0_#in~b.offset|) 2147483648)) (= |#memory_int#1| |old(#memory_int#1)|) (exists ((v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_3 Int) (v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_3 Int)) (<= (select (select |#memory_int#2| v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_3) v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_3) 5)) (exists ((v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_2 Int) (v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_2 Int)) (<= 0 (+ (select (select |#memory_int#2| v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_2) v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_2) 2147483648)))) Eliminated clause: (and (<= 0 (+ (select (select |#memory_int#1| |func_to_recursive_line_21_to_21_0_#in~b.base|) |func_to_recursive_line_21_to_21_0_#in~b.offset|) 2147483648)) (exists ((v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_3 Int) (v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_3 Int)) (<= (select (select |#memory_int#2| v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_3) v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_3) 5)) (exists ((v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_2 Int) (v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_2 Int)) (<= 0 (+ (select (select |#memory_int#2| v_func_to_recursive_line_20_to_21_0_~a.base_BEFORE_CALL_2) v_func_to_recursive_line_20_to_21_0_~a.offset_BEFORE_CALL_2) 2147483648)))) [2024-10-14 21:13:34,675 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-14 21:13:34,675 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-10-14 21:13:34,675 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] [2024-10-14 21:13:34,676 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-14 21:13:34,676 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-14 21:13:34,676 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int#1 [2024-10-14 21:13:34,677 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] [2024-10-14 21:13:34,677 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] [2024-10-14 21:13:34,677 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-14 21:13:34,677 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-10-14 21:13:34,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 09:13:34 BoogieIcfgContainer [2024-10-14 21:13:34,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 21:13:34,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 21:13:34,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 21:13:34,679 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 21:13:34,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:26" (3/4) ... [2024-10-14 21:13:34,682 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 21:13:34,685 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_21_0 [2024-10-14 21:13:34,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_21_to_21_0 [2024-10-14 21:13:34,690 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-10-14 21:13:34,690 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-14 21:13:34,691 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 21:13:34,691 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 21:13:34,771 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 21:13:34,772 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 21:13:34,772 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 21:13:34,773 INFO L158 Benchmark]: Toolchain (without parser) took 8712.97ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 111.5MB in the beginning and 120.7MB in the end (delta: -9.2MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2024-10-14 21:13:34,773 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 130.0MB in the end (delta: 177.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 21:13:34,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.51ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 100.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 21:13:34,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.86ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 98.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 21:13:34,773 INFO L158 Benchmark]: Boogie Preprocessor took 32.47ms. Allocated memory is still 167.8MB. Free memory was 98.9MB in the beginning and 97.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 21:13:34,774 INFO L158 Benchmark]: RCFGBuilder took 311.27ms. Allocated memory is still 167.8MB. Free memory was 97.3MB in the beginning and 83.3MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 21:13:34,774 INFO L158 Benchmark]: TraceAbstraction took 7986.22ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 82.7MB in the beginning and 126.0MB in the end (delta: -43.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2024-10-14 21:13:34,774 INFO L158 Benchmark]: Witness Printer took 93.59ms. Allocated memory is still 220.2MB. Free memory was 126.0MB in the beginning and 120.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 21:13:34,776 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81ms. Allocated memory is still 167.8MB. Free memory was 130.2MB in the beginning and 130.0MB in the end (delta: 177.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.51ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 100.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.86ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 98.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.47ms. Allocated memory is still 167.8MB. Free memory was 98.9MB in the beginning and 97.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.27ms. Allocated memory is still 167.8MB. Free memory was 97.3MB in the beginning and 83.3MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7986.22ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 82.7MB in the beginning and 126.0MB in the end (delta: -43.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Witness Printer took 93.59ms. Allocated memory is still 220.2MB. Free memory was 126.0MB in the beginning and 120.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#2,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#2,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#2 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#2,GLOBAL]],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int#1,GLOBAL]],[IdentifierExpression[#in~b!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 355 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 260 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 95 mSDtfsCounter, 244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, InterpolantAutomatonStates: 41, 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 186 ConstructedInterpolants, 22 QuantifiedInterpolants, 688 SizeOfPredicates, 9 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 126/137 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 21:13:34,807 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