./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/list-properties/splice-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:06:20,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:06:20,070 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:06:20,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:06:20,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:06:20,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:06:20,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:06:20,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:06:20,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:06:20,098 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:06:20,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:06:20,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:06:20,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:06:20,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:06:20,099 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:06:20,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:06:20,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:06:20,100 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:06:20,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:06:20,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:06:20,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:06:20,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:06:20,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:06:20,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:06:20,104 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:06:20,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:06:20,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:06:20,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:06:20,105 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:06:20,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:06:20,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:06:20,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:06:20,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:06:20,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:06:20,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:06:20,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:06:20,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:06:20,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:06:20,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:06:20,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:06:20,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:06:20,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:06:20,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c [2024-11-09 22:06:20,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:06:20,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:06:20,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:06:20,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:06:20,314 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:06:20,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-1.i [2024-11-09 22:06:21,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:06:21,681 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:06:21,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i [2024-11-09 22:06:21,691 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f45c7c16/8b1d1477af5747d1bb95b2621f205a9a/FLAGd4bd3c89d [2024-11-09 22:06:21,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f45c7c16/8b1d1477af5747d1bb95b2621f205a9a [2024-11-09 22:06:21,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:06:21,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:06:21,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:06:21,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:06:21,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:06:21,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:06:21" (1/1) ... [2024-11-09 22:06:21,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5887fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:21, skipping insertion in model container [2024-11-09 22:06:21,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:06:21" (1/1) ... [2024-11-09 22:06:21,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:06:22,041 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/list-properties/splice-1.i[23721,23734] [2024-11-09 22:06:22,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:06:22,055 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:06:22,093 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/list-properties/splice-1.i[23721,23734] [2024-11-09 22:06:22,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:06:22,119 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:06:22,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22 WrapperNode [2024-11-09 22:06:22,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:06:22,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:06:22,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:06:22,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:06:22,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,153 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 100 [2024-11-09 22:06:22,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:06:22,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:06:22,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:06:22,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:06:22,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,166 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,175 INFO L175 MemorySlicer]: Split 16 memory accesses to 2 slices as follows [2, 14]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-09 22:06:22,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,188 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:06:22,194 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:06:22,194 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:06:22,194 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:06:22,194 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (1/1) ... [2024-11-09 22:06:22,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:06:22,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:06:22,224 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) [2024-11-09 22:06:22,225 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 [2024-11-09 22:06:22,258 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-09 22:06:22,258 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-09 22:06:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 22:06:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 22:06:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 22:06:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 22:06:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 22:06:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:06:22,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 22:06:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 22:06:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 22:06:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 22:06:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:06:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 22:06:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:06:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:06:22,340 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:06:22,341 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:06:22,358 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-09 22:06:22,485 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-09 22:06:22,485 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:06:22,495 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:06:22,495 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:06:22,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:06:22 BoogieIcfgContainer [2024-11-09 22:06:22,496 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:06:22,497 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:06:22,497 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:06:22,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:06:22,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:06:21" (1/3) ... [2024-11-09 22:06:22,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8096d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:06:22, skipping insertion in model container [2024-11-09 22:06:22,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:06:22" (2/3) ... [2024-11-09 22:06:22,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8096d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:06:22, skipping insertion in model container [2024-11-09 22:06:22,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:06:22" (3/3) ... [2024-11-09 22:06:22,502 INFO L112 eAbstractionObserver]: Analyzing ICFG splice-1.i [2024-11-09 22:06:22,514 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:06:22,514 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:06:22,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:06:22,558 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;@3ebdb64c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:06:22,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:06:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 33 states have internal predecessors, (47), 2 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) [2024-11-09 22:06:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 22:06:22,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:22,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:22,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:22,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash -939282460, now seen corresponding path program 1 times [2024-11-09 22:06:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:22,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145955168] [2024-11-09 22:06:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:22,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145955168] [2024-11-09 22:06:22,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145955168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:22,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:22,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:06:22,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379860003] [2024-11-09 22:06:22,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:22,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:06:22,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:06:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:06:22,753 INFO L87 Difference]: Start difference. First operand has 35 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 33 states have internal predecessors, (47), 2 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) 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) [2024-11-09 22:06:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:22,768 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2024-11-09 22:06:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:06:22,769 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 [2024-11-09 22:06:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:22,774 INFO L225 Difference]: With dead ends: 55 [2024-11-09 22:06:22,774 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 22:06:22,776 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 [2024-11-09 22:06:22,779 INFO L432 NwaCegarLoop]: 43 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, 43 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 [2024-11-09 22:06:22,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:06:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 22:06:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 22:06:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 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) [2024-11-09 22:06:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-09 22:06:22,805 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2024-11-09 22:06:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:22,805 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-09 22:06:22,805 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) [2024-11-09 22:06:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-09 22:06:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 22:06:22,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:22,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:22,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:06:22,807 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:22,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1761892590, now seen corresponding path program 1 times [2024-11-09 22:06:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:22,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788299687] [2024-11-09 22:06:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:22,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:22,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:22,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788299687] [2024-11-09 22:06:22,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788299687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:06:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006229270] [2024-11-09 22:06:22,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:22,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:06:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:22,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:06:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:06:22,993 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 22:06:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:23,031 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-11-09 22:06:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:06:23,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2024-11-09 22:06:23,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:23,034 INFO L225 Difference]: With dead ends: 42 [2024-11-09 22:06:23,034 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 22:06:23,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:06:23,035 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:06:23,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 70 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:06:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 22:06:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 22:06:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2024-11-09 22:06:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-11-09 22:06:23,041 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 16 [2024-11-09 22:06:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:23,042 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-11-09 22:06:23,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-09 22:06:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-11-09 22:06:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:06:23,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:23,044 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:23,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:06:23,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:23,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:23,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2102617056, now seen corresponding path program 1 times [2024-11-09 22:06:23,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:23,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990844210] [2024-11-09 22:06:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990844210] [2024-11-09 22:06:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990844210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:23,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:06:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959182990] [2024-11-09 22:06:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:23,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:06:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:06:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:06:23,179 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-09 22:06:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:23,225 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-09 22:06:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:06:23,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2024-11-09 22:06:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:23,226 INFO L225 Difference]: With dead ends: 44 [2024-11-09 22:06:23,227 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 22:06:23,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:06:23,228 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:06:23,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:06:23,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 22:06:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 22:06:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2024-11-09 22:06:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-09 22:06:23,236 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 19 [2024-11-09 22:06:23,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:23,236 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-09 22:06:23,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-09 22:06:23,236 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-09 22:06:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:06:23,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:23,237 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:23,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:06:23,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:23,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:23,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1750107777, now seen corresponding path program 1 times [2024-11-09 22:06:23,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:23,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123378929] [2024-11-09 22:06:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:23,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:06:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:06:23,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:06:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123378929] [2024-11-09 22:06:23,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123378929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:06:23,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:06:23,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:06:23,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821149295] [2024-11-09 22:06:23,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:06:23,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:06:23,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:06:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:06:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:06:23,380 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-09 22:06:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:06:23,432 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-11-09 22:06:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:06:23,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2024-11-09 22:06:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:06:23,434 INFO L225 Difference]: With dead ends: 64 [2024-11-09 22:06:23,434 INFO L226 Difference]: Without dead ends: 40 [2024-11-09 22:06:23,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:06:23,435 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:06:23,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:06:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-09 22:06:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2024-11-09 22:06:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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) [2024-11-09 22:06:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-09 22:06:23,438 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 19 [2024-11-09 22:06:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:06:23,439 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-09 22:06:23,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-09 22:06:23,439 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-09 22:06:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 22:06:23,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:06:23,440 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:06:23,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 22:06:23,440 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:06:23,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:06:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1304889412, now seen corresponding path program 1 times [2024-11-09 22:06:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:06:23,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241386290] [2024-11-09 22:06:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:06:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:06:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 22:06:23,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 22:06:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 22:06:23,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 22:06:23,507 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 22:06:23,508 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 22:06:23,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 22:06:23,511 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 22:06:23,538 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 22:06:23,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:06:23 BoogieIcfgContainer [2024-11-09 22:06:23,541 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 22:06:23,543 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 22:06:23,543 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 22:06:23,543 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 22:06:23,544 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:06:22" (3/4) ... [2024-11-09 22:06:23,545 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 22:06:23,581 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 22:06:23,581 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 22:06:23,582 INFO L158 Benchmark]: Toolchain (without parser) took 1878.70ms. Allocated memory is still 155.2MB. Free memory was 84.4MB in the beginning and 77.1MB in the end (delta: 7.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2024-11-09 22:06:23,582 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:06:23,582 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.64ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 112.7MB in the end (delta: -28.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 22:06:23,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.76ms. Allocated memory is still 155.2MB. Free memory was 112.7MB in the beginning and 111.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 22:06:23,582 INFO L158 Benchmark]: Boogie Preprocessor took 37.77ms. Allocated memory is still 155.2MB. Free memory was 110.6MB in the beginning and 108.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 22:06:23,583 INFO L158 Benchmark]: IcfgBuilder took 302.05ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 91.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 22:06:23,583 INFO L158 Benchmark]: TraceAbstraction took 1044.37ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 80.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-11-09 22:06:23,583 INFO L158 Benchmark]: Witness Printer took 38.50ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 77.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 22:06:23,587 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.64ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 112.7MB in the end (delta: -28.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.76ms. Allocated memory is still 155.2MB. Free memory was 112.7MB in the beginning and 111.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.77ms. Allocated memory is still 155.2MB. Free memory was 110.6MB in the beginning and 108.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 302.05ms. Allocated memory is still 155.2MB. Free memory was 108.5MB in the beginning and 91.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1044.37ms. Allocated memory is still 155.2MB. Free memory was 91.2MB in the beginning and 80.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 38.50ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 77.1MB in the end (delta: 2.9MB). 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: 584]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a VAL [flag=1, l1={0:0}, l2={0:0}, p={-1:0}] [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 VAL [flag=0, l1={-1:0}, l2={0:0}, p={-2:0}] [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 VAL [flag=0, l2={0:0}, p={-1:0}] [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] reach_error() VAL [flag=0, l2={0:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 294 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 168 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 126 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-09 22:06:23,610 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE