./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:21:01,087 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:21:01,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 18:21:01,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:21:01,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:21:01,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:21:01,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:21:01,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:21:01,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:21:01,210 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:21:01,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:21:01,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:21:01,211 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:21:01,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:21:01,214 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:21:01,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:21:01,215 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:21:01,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:21:01,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:21:01,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:21:01,216 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:21:01,216 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:21:01,220 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:21:01,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:21:01,221 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:21:01,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:21:01,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:21:01,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:21:01,222 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:21:01,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:21:01,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:21:01,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:21:01,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:21:01,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:21:01,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:21:01,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:21:01,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 18:21:01,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 18:21:01,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:21:01,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:21:01,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:21:01,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:21:01,229 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95 [2024-10-11 18:21:01,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:21:01,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:21:01,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:21:01,537 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:21:01,538 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:21:01,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2024-10-11 18:21:03,191 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:21:03,404 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:21:03,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2024-10-11 18:21:03,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7a0f4d4b5/2553f42d6920457886d056cd07342b6e/FLAGa5ff6fe0f [2024-10-11 18:21:03,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7a0f4d4b5/2553f42d6920457886d056cd07342b6e [2024-10-11 18:21:03,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:21:03,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:21:03,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:21:03,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:21:03,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:21:03,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6e3682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03, skipping insertion in model container [2024-10-11 18:21:03,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,472 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:21:03,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:21:03,710 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 18:21:03,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:21:03,752 INFO L204 MainTranslator]: Completed translation [2024-10-11 18:21:03,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03 WrapperNode [2024-10-11 18:21:03,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:21:03,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 18:21:03,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 18:21:03,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 18:21:03,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,800 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2024-10-11 18:21:03,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 18:21:03,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 18:21:03,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 18:21:03,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 18:21:03,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,816 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,841 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-11 18:21:03,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 18:21:03,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 18:21:03,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 18:21:03,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 18:21:03,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (1/1) ... [2024-10-11 18:21:03,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:21:03,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:21:03,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 18:21:03,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 18:21:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 18:21:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 18:21:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 18:21:03,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 18:21:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 18:21:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 18:21:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 18:21:03,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 18:21:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 18:21:03,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 18:21:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 18:21:04,035 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 18:21:04,038 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 18:21:04,208 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-10-11 18:21:04,208 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 18:21:04,255 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 18:21:04,256 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 18:21:04,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:21:04 BoogieIcfgContainer [2024-10-11 18:21:04,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 18:21:04,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 18:21:04,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 18:21:04,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 18:21:04,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:21:03" (1/3) ... [2024-10-11 18:21:04,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716e9343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:21:04, skipping insertion in model container [2024-10-11 18:21:04,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:21:03" (2/3) ... [2024-10-11 18:21:04,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716e9343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:21:04, skipping insertion in model container [2024-10-11 18:21:04,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:21:04" (3/3) ... [2024-10-11 18:21:04,270 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2024-10-11 18:21:04,290 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 18:21:04,290 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-11 18:21:04,344 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 18:21:04,351 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=None, 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;@dce9be8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 18:21:04,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-11 18:21:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 12 states have (on average 2.25) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 18:21:04,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:04,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 18:21:04,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:04,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:04,367 INFO L85 PathProgramCache]: Analyzing trace with hash 91874, now seen corresponding path program 1 times [2024-10-11 18:21:04,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:04,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085119748] [2024-10-11 18:21:04,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:21:04,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:04,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085119748] [2024-10-11 18:21:04,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085119748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:04,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:21:04,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:21:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343627299] [2024-10-11 18:21:04,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:04,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 18:21:04,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:04,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 18:21:04,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 18:21:04,601 INFO L87 Difference]: Start difference. First operand has 23 states, 12 states have (on average 2.25) internal successors, (27), 22 states have internal predecessors, (27), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:04,647 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2024-10-11 18:21:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 18:21:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-10-11 18:21:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:04,660 INFO L225 Difference]: With dead ends: 23 [2024-10-11 18:21:04,660 INFO L226 Difference]: Without dead ends: 22 [2024-10-11 18:21:04,663 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 [2024-10-11 18:21:04,670 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:04,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:21:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-11 18:21:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-11 18:21:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 21 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) [2024-10-11 18:21:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-10-11 18:21:04,703 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 3 [2024-10-11 18:21:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:04,704 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-10-11 18:21:04,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-10-11 18:21:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 18:21:04,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:04,705 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 18:21:04,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 18:21:04,706 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:04,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash 91564, now seen corresponding path program 1 times [2024-10-11 18:21:04,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:04,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630225064] [2024-10-11 18:21:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:04,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:21:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630225064] [2024-10-11 18:21:04,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630225064] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:04,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:21:04,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 18:21:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314564679] [2024-10-11 18:21:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:04,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:21:04,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:21:04,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:21:04,893 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:05,019 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-10-11 18:21:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:21:05,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-10-11 18:21:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:05,024 INFO L225 Difference]: With dead ends: 18 [2024-10-11 18:21:05,024 INFO L226 Difference]: Without dead ends: 18 [2024-10-11 18:21:05,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:21:05,026 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:05,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:21:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-11 18:21:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-11 18:21:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 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) [2024-10-11 18:21:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-10-11 18:21:05,031 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2024-10-11 18:21:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:05,031 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-10-11 18:21:05,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-10-11 18:21:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 18:21:05,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:05,037 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 18:21:05,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 18:21:05,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:05,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:05,044 INFO L85 PathProgramCache]: Analyzing trace with hash 91565, now seen corresponding path program 1 times [2024-10-11 18:21:05,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:05,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562803306] [2024-10-11 18:21:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:05,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:21:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562803306] [2024-10-11 18:21:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562803306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:05,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:21:05,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 18:21:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926936545] [2024-10-11 18:21:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:05,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:21:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:21:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:21:05,202 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:05,230 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-10-11 18:21:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:21:05,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-10-11 18:21:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:05,231 INFO L225 Difference]: With dead ends: 17 [2024-10-11 18:21:05,231 INFO L226 Difference]: Without dead ends: 17 [2024-10-11 18:21:05,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:21:05,234 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:05,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:21:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-11 18:21:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-11 18:21:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-11 18:21:05,242 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 3 [2024-10-11 18:21:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:05,242 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-11 18:21:05,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-11 18:21:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 18:21:05,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:05,242 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 18:21:05,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 18:21:05,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:05,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash 91618, now seen corresponding path program 1 times [2024-10-11 18:21:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:05,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938369393] [2024-10-11 18:21:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:21:05,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938369393] [2024-10-11 18:21:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938369393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:05,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:21:05,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:21:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416131323] [2024-10-11 18:21:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:05,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:21:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:05,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:21:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:21:05,476 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:05,554 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-10-11 18:21:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:21:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-10-11 18:21:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:05,556 INFO L225 Difference]: With dead ends: 23 [2024-10-11 18:21:05,556 INFO L226 Difference]: Without dead ends: 23 [2024-10-11 18:21:05,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:21:05,560 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:05,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:21:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-11 18:21:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2024-10-11 18:21:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-11 18:21:05,564 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 3 [2024-10-11 18:21:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:05,565 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-11 18:21:05,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-11 18:21:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 18:21:05,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:05,566 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 18:21:05,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 18:21:05,567 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:05,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1563867580, now seen corresponding path program 1 times [2024-10-11 18:21:05,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:05,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174494874] [2024-10-11 18:21:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:21:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:05,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174494874] [2024-10-11 18:21:05,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174494874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:05,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:21:05,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 18:21:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981458557] [2024-10-11 18:21:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:05,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:21:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:21:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:21:05,717 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:05,745 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-10-11 18:21:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:21:05,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-10-11 18:21:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:05,746 INFO L225 Difference]: With dead ends: 22 [2024-10-11 18:21:05,746 INFO L226 Difference]: Without dead ends: 22 [2024-10-11 18:21:05,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:21:05,747 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:05,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 15 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:21:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-11 18:21:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2024-10-11 18:21:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-10-11 18:21:05,750 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2024-10-11 18:21:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:05,750 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-11 18:21:05,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-10-11 18:21:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 18:21:05,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:05,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:21:05,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 18:21:05,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:05,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash 361848815, now seen corresponding path program 1 times [2024-10-11 18:21:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:05,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332935324] [2024-10-11 18:21:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:05,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:21:05,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:05,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332935324] [2024-10-11 18:21:05,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332935324] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:21:05,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722900107] [2024-10-11 18:21:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:05,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:05,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:21:05,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:21:05,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 18:21:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:05,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:21:05,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:21:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:21:06,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:21:06,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722900107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:06,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:21:06,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-10-11 18:21:06,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138189524] [2024-10-11 18:21:06,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:06,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:21:06,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:06,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:21:06,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:21:06,016 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:06,051 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-10-11 18:21:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:21:06,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-10-11 18:21:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:06,052 INFO L225 Difference]: With dead ends: 29 [2024-10-11 18:21:06,052 INFO L226 Difference]: Without dead ends: 29 [2024-10-11 18:21:06,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:21:06,053 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:06,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 24 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:21:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-11 18:21:06,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2024-10-11 18:21:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-10-11 18:21:06,059 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2024-10-11 18:21:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:06,060 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-10-11 18:21:06,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-10-11 18:21:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 18:21:06,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:06,061 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:21:06,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 18:21:06,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:06,263 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:06,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash -155692349, now seen corresponding path program 1 times [2024-10-11 18:21:06,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:06,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738291987] [2024-10-11 18:21:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:06,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:21:06,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:06,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738291987] [2024-10-11 18:21:06,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738291987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:06,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:21:06,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:21:06,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375472214] [2024-10-11 18:21:06,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:06,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:21:06,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:21:06,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:21:06,332 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:06,353 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-10-11 18:21:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:21:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-10-11 18:21:06,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:06,355 INFO L225 Difference]: With dead ends: 16 [2024-10-11 18:21:06,355 INFO L226 Difference]: Without dead ends: 16 [2024-10-11 18:21:06,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:21:06,356 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:06,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:21:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-11 18:21:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-11 18:21:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-10-11 18:21:06,363 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2024-10-11 18:21:06,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:06,363 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-11 18:21:06,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-10-11 18:21:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 18:21:06,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:06,364 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:21:06,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 18:21:06,365 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:06,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:06,366 INFO L85 PathProgramCache]: Analyzing trace with hash -155607854, now seen corresponding path program 1 times [2024-10-11 18:21:06,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:06,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18911850] [2024-10-11 18:21:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:06,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:21:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:06,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18911850] [2024-10-11 18:21:06,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18911850] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:21:06,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126176800] [2024-10-11 18:21:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:06,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:06,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:21:06,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:21:06,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 18:21:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:06,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 18:21:06,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:21:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:21:06,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:21:06,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-10-11 18:21:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:21:06,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126176800] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:21:06,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:21:06,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11 [2024-10-11 18:21:06,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283630941] [2024-10-11 18:21:06,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:21:06,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 18:21:06,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 18:21:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:21:06,789 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:06,966 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2024-10-11 18:21:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 18:21:06,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 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 10 [2024-10-11 18:21:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:06,969 INFO L225 Difference]: With dead ends: 44 [2024-10-11 18:21:06,969 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 18:21:06,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2024-10-11 18:21:06,970 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 113 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:06,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 49 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:21:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 18:21:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 26. [2024-10-11 18:21:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.3333333333333333) 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) [2024-10-11 18:21:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-10-11 18:21:06,984 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2024-10-11 18:21:06,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:06,984 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-10-11 18:21:06,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:06,985 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-10-11 18:21:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 18:21:06,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:06,985 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:21:07,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 18:21:07,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:07,187 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:07,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 629947647, now seen corresponding path program 1 times [2024-10-11 18:21:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195943346] [2024-10-11 18:21:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:07,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:21:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:07,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195943346] [2024-10-11 18:21:07,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195943346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:21:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578994346] [2024-10-11 18:21:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:07,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:07,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:21:07,275 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:21:07,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 18:21:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:07,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:21:07,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:21:07,424 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#in~0#1.base_31| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_31| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_31|) 0))) is different from true [2024-10-11 18:21:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:21:07,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:21:07,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578994346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:21:07,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:21:07,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-10-11 18:21:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930666045] [2024-10-11 18:21:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:21:07,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:21:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:21:07,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-10-11 18:21:07,427 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:07,458 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2024-10-11 18:21:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:21:07,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2024-10-11 18:21:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:07,459 INFO L225 Difference]: With dead ends: 25 [2024-10-11 18:21:07,463 INFO L226 Difference]: Without dead ends: 21 [2024-10-11 18:21:07,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-10-11 18:21:07,464 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:07,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2024-10-11 18:21:07,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-11 18:21:07,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-11 18:21:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-10-11 18:21:07,467 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2024-10-11 18:21:07,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:07,468 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-10-11 18:21:07,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-10-11 18:21:07,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-11 18:21:07,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:07,468 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 2, 2, 1, 1, 1, 1, 1] [2024-10-11 18:21:07,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 18:21:07,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:07,670 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:07,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1584593570, now seen corresponding path program 2 times [2024-10-11 18:21:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284224726] [2024-10-11 18:21:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 18:21:07,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284224726] [2024-10-11 18:21:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284224726] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:21:07,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448537316] [2024-10-11 18:21:07,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:21:07,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:07,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:21:07,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:21:07,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 18:21:07,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 18:21:07,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:21:07,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 18:21:07,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:21:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:21:08,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:21:08,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-10-11 18:21:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:21:08,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448537316] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:21:08,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:21:08,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 20 [2024-10-11 18:21:08,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835056321] [2024-10-11 18:21:08,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:21:08,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 18:21:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 18:21:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-10-11 18:21:08,374 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:08,761 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-10-11 18:21:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 18:21:08,761 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 20 [2024-10-11 18:21:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:08,762 INFO L225 Difference]: With dead ends: 34 [2024-10-11 18:21:08,762 INFO L226 Difference]: Without dead ends: 34 [2024-10-11 18:21:08,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-10-11 18:21:08,763 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 19 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:08,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 18:21:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-11 18:21:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2024-10-11 18:21:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 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) [2024-10-11 18:21:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-10-11 18:21:08,766 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2024-10-11 18:21:08,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:08,766 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-10-11 18:21:08,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-10-11 18:21:08,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 18:21:08,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:21:08,767 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 3, 3, 1, 1, 1, 1, 1] [2024-10-11 18:21:08,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 18:21:08,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 18:21:08,968 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-11 18:21:08,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:21:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash -265253995, now seen corresponding path program 3 times [2024-10-11 18:21:08,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:21:08,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659224500] [2024-10-11 18:21:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:21:08,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:21:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:21:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-10-11 18:21:09,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:21:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659224500] [2024-10-11 18:21:09,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659224500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:21:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525420866] [2024-10-11 18:21:09,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 18:21:09,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:21:09,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:21:09,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:21:09,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 18:21:09,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 18:21:09,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:21:09,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 18:21:09,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:21:09,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 18:21:09,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 18:21:09,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 18:21:09,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2024-10-11 18:21:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-11 18:21:09,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:21:09,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-10-11 18:21:09,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2024-10-11 18:21:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-10-11 18:21:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525420866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:21:09,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:21:09,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-10-11 18:21:09,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651952393] [2024-10-11 18:21:09,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:21:09,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 18:21:09,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:21:09,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 18:21:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-11 18:21:09,997 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:21:10,204 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-10-11 18:21:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 18:21:10,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 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 32 [2024-10-11 18:21:10,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:21:10,205 INFO L225 Difference]: With dead ends: 35 [2024-10-11 18:21:10,205 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 18:21:10,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-10-11 18:21:10,206 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:21:10,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:21:10,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 18:21:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 18:21:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 18:21:10,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2024-10-11 18:21:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:21:10,208 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 18:21:10,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:21:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 18:21:10,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 18:21:10,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2024-10-11 18:21:10,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-10-11 18:21:10,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-10-11 18:21:10,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2024-10-11 18:21:10,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2024-10-11 18:21:10,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2024-10-11 18:21:10,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2024-10-11 18:21:10,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-10-11 18:21:10,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-10-11 18:21:10,212 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-10-11 18:21:10,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 18:21:10,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 18:21:10,417 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:21:10,419 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 18:21:10,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:21:10 BoogieIcfgContainer [2024-10-11 18:21:10,422 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 18:21:10,423 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 18:21:10,423 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 18:21:10,423 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 18:21:10,423 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:21:04" (3/4) ... [2024-10-11 18:21:10,426 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 18:21:10,433 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-10-11 18:21:10,433 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-11 18:21:10,433 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 18:21:10,434 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 18:21:10,521 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 18:21:10,521 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 18:21:10,521 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 18:21:10,522 INFO L158 Benchmark]: Toolchain (without parser) took 7091.04ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 48.3MB in the beginning and 122.1MB in the end (delta: -73.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:21:10,522 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:21:10,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.46ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 48.1MB in the beginning and 112.7MB in the end (delta: -64.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-10-11 18:21:10,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.94ms. Allocated memory is still 146.8MB. Free memory was 112.7MB in the beginning and 110.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 18:21:10,523 INFO L158 Benchmark]: Boogie Preprocessor took 54.57ms. Allocated memory is still 146.8MB. Free memory was 110.8MB in the beginning and 109.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 18:21:10,526 INFO L158 Benchmark]: RCFGBuilder took 397.84ms. Allocated memory is still 146.8MB. Free memory was 109.5MB in the beginning and 94.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 18:21:10,527 INFO L158 Benchmark]: TraceAbstraction took 6163.45ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 93.6MB in the beginning and 127.2MB in the end (delta: -33.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:21:10,527 INFO L158 Benchmark]: Witness Printer took 98.67ms. Allocated memory is still 176.2MB. Free memory was 127.2MB in the beginning and 122.1MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 18:21:10,528 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.46ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 48.1MB in the beginning and 112.7MB in the end (delta: -64.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.94ms. Allocated memory is still 146.8MB. Free memory was 112.7MB in the beginning and 110.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.57ms. Allocated memory is still 146.8MB. Free memory was 110.8MB in the beginning and 109.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.84ms. Allocated memory is still 146.8MB. Free memory was 109.5MB in the beginning and 94.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6163.45ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 93.6MB in the beginning and 127.2MB in the end (delta: -33.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 98.67ms. Allocated memory is still 176.2MB. Free memory was 127.2MB in the beginning and 122.1MB in the end (delta: 5.1MB). 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 170 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 514 IncrementalHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 84 mSDtfsCounter, 514 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=10, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 194 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 237 ConstructedInterpolants, 1 QuantifiedInterpolants, 2637 SizeOfPredicates, 7 NumberOfNonLiveVariables, 512 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 357/480 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-11 18:21:10,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE