./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ncompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ncompf.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9828ae97bd89bb8bc9e03b825846d0b3720f0cca297df36eda8ff823667b1534 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 10:16:22,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:16:22,955 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:16:22,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:16:22,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:16:22,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:16:22,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:16:22,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:16:22,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:16:22,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:16:22,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:16:22,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:16:22,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:16:22,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:16:22,995 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:16:22,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:16:22,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:16:22,996 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:16:22,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:16:22,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:16:22,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:16:22,997 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:16:22,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:16:22,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:16:22,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:16:22,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:16:22,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:16:22,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:16:22,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:16:23,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:16:23,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:16:23,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:16:23,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:16:23,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:16:23,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:16:23,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:16:23,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:16:23,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:16:23,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:16:23,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:16:23,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:16:23,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:16:23,003 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9828ae97bd89bb8bc9e03b825846d0b3720f0cca297df36eda8ff823667b1534 [2024-11-08 10:16:23,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:16:23,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:16:23,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:16:23,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:16:23,251 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:16:23,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ncompf.c [2024-11-08 10:16:24,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:16:24,838 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:16:24,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c [2024-11-08 10:16:24,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0180d59/31085b267d4243e3a19461b25f887c41/FLAGf520e6854 [2024-11-08 10:16:24,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0180d59/31085b267d4243e3a19461b25f887c41 [2024-11-08 10:16:24,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:16:24,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:16:24,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:16:24,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:16:24,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:16:24,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:16:24" (1/1) ... [2024-11-08 10:16:24,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635f1883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:24, skipping insertion in model container [2024-11-08 10:16:24,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:16:24" (1/1) ... [2024-11-08 10:16:24,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:16:25,067 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2024-11-08 10:16:25,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:16:25,111 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:16:25,124 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2024-11-08 10:16:25,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:16:25,158 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:16:25,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25 WrapperNode [2024-11-08 10:16:25,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:16:25,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:16:25,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:16:25,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:16:25,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,196 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2024-11-08 10:16:25,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:16:25,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:16:25,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:16:25,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:16:25,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,223 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 2, 2]. [2024-11-08 10:16:25,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:16:25,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:16:25,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:16:25,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:16:25,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (1/1) ... [2024-11-08 10:16:25,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:16:25,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:25,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 10:16:25,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 10:16:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 10:16:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:16:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:16:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:16:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 10:16:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:16:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:16:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:16:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 10:16:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 10:16:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:16:25,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:16:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:16:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:16:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:16:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 10:16:25,475 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:16:25,477 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:16:25,692 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-08 10:16:25,692 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:16:25,710 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:16:25,711 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-08 10:16:25,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:16:25 BoogieIcfgContainer [2024-11-08 10:16:25,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:16:25,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:16:25,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:16:25,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:16:25,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:16:24" (1/3) ... [2024-11-08 10:16:25,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d1705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:16:25, skipping insertion in model container [2024-11-08 10:16:25,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:16:25" (2/3) ... [2024-11-08 10:16:25,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d1705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:16:25, skipping insertion in model container [2024-11-08 10:16:25,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:16:25" (3/3) ... [2024-11-08 10:16:25,722 INFO L112 eAbstractionObserver]: Analyzing ICFG ncompf.c [2024-11-08 10:16:25,739 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:16:25,739 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:16:25,802 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:16:25,812 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;@23c88d73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:16:25,812 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:16:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:25,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 10:16:25,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:25,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:25,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:25,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2024-11-08 10:16:25,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:25,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284844061] [2024-11-08 10:16:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:25,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:16:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 10:16:26,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:16:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284844061] [2024-11-08 10:16:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284844061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:16:26,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:16:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 10:16:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699799694] [2024-11-08 10:16:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:16:26,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 10:16:26,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:16:26,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 10:16:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:16:26,057 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 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) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:16:26,074 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2024-11-08 10:16:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 10:16:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) Word has length 14 [2024-11-08 10:16:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:16:26,083 INFO L225 Difference]: With dead ends: 44 [2024-11-08 10:16:26,083 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 10:16:26,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 10:16:26,090 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 10:16:26,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 10:16:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 10:16:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-08 10:16:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-08 10:16:26,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2024-11-08 10:16:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:16:26,123 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-08 10:16:26,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 10:16:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-08 10:16:26,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 10:16:26,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:16:26,124 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 10:16:26,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:16:26,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:16:26,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:16:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2024-11-08 10:16:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:16:26,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645703429] [2024-11-08 10:16:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:26,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:16:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 10:16:26,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744086284] [2024-11-08 10:16:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:16:26,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:26,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:16:26,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 10:16:26,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:16:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 10:16:26,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 10:16:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 10:16:26,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 10:16:26,370 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 10:16:26,371 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 10:16:26,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 10:16:26,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:16:26,577 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 10:16:26,623 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 10:16:26,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 10:16:26 BoogieIcfgContainer [2024-11-08 10:16:26,626 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 10:16:26,627 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 10:16:26,628 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 10:16:26,628 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 10:16:26,628 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:16:25" (3/4) ... [2024-11-08 10:16:26,630 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 10:16:26,725 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 10:16:26,729 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 10:16:26,730 INFO L158 Benchmark]: Toolchain (without parser) took 1866.83ms. Allocated memory was 159.4MB in the beginning and 230.7MB in the end (delta: 71.3MB). Free memory was 85.6MB in the beginning and 198.0MB in the end (delta: -112.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 10:16:26,730 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 10:16:26,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.63ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 71.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 10:16:26,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.46ms. Allocated memory is still 159.4MB. Free memory was 71.4MB in the beginning and 69.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 10:16:26,731 INFO L158 Benchmark]: Boogie Preprocessor took 49.92ms. Allocated memory is still 159.4MB. Free memory was 69.5MB in the beginning and 67.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 10:16:26,734 INFO L158 Benchmark]: RCFGBuilder took 463.50ms. Allocated memory was 159.4MB in the beginning and 230.7MB in the end (delta: 71.3MB). Free memory was 67.4MB in the beginning and 194.9MB in the end (delta: -127.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-11-08 10:16:26,734 INFO L158 Benchmark]: TraceAbstraction took 912.86ms. Allocated memory is still 230.7MB. Free memory was 193.9MB in the beginning and 200.1MB in the end (delta: -6.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-08 10:16:26,734 INFO L158 Benchmark]: Witness Printer took 101.72ms. Allocated memory is still 230.7MB. Free memory was 200.1MB in the beginning and 198.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 10:16:26,736 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 108.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.63ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 71.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.46ms. Allocated memory is still 159.4MB. Free memory was 71.4MB in the beginning and 69.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.92ms. Allocated memory is still 159.4MB. Free memory was 69.5MB in the beginning and 67.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.50ms. Allocated memory was 159.4MB in the beginning and 230.7MB in the end (delta: 71.3MB). Free memory was 67.4MB in the beginning and 194.9MB in the end (delta: -127.5MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * TraceAbstraction took 912.86ms. Allocated memory is still 230.7MB. Free memory was 193.9MB in the beginning and 200.1MB in the end (delta: -6.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 101.72ms. Allocated memory is still 230.7MB. Free memory was 200.1MB in the beginning and 198.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 VAL [N=1, a={-2:0}, b={-1:0}, c={4:0}, i=1] [L35] COND FALSE !(i