./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3dbbec33 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 ed9ad97c04e31259eb9462964e1ee9692abc78f6814573ccfff6d31784ab3b25 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 13:29:19,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 13:29:19,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 13:29:19,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 13:29:19,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 13:29:19,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 13:29:19,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 13:29:19,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 13:29:19,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 13:29:19,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 13:29:19,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 13:29:19,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 13:29:19,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 13:29:19,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 13:29:19,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 13:29:19,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 13:29:19,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 13:29:19,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 13:29:19,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 13:29:19,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 13:29:19,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 13:29:19,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 13:29:19,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 13:29:19,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 13:29:19,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 13:29:19,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 13:29:19,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 13:29:19,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 13:29:19,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 13:29:19,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 13:29:19,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 13:29:19,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 13:29:19,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 13:29:19,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 13:29:19,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 13:29:19,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 13:29:19,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 13:29:19,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 13:29:19,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 13:29:19,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 13:29:19,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 13:29:19,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 13:29:19,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 13:29:19,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 13:29:19,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 13:29:19,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 13:29:19,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 13:29:19,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 13:29:19,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 13:29:19,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 13:29:19,273 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 13:29:19,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 13:29:19,273 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 13:29:19,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 13:29:19,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 13:29:19,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 13:29:19,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 13:29:19,274 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 13:29:19,274 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 13:29:19,274 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 13:29:19,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 13:29:19,275 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 13:29:19,275 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 13:29:19,275 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 13:29:19,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 13:29:19,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 13:29:19,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 13:29:19,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:29:19,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 13:29:19,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 13:29:19,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 13:29:19,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 13:29:19,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 13:29:19,277 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 13:29:19,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 13:29:19,277 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 13:29:19,277 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed9ad97c04e31259eb9462964e1ee9692abc78f6814573ccfff6d31784ab3b25 [2023-02-14 13:29:19,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 13:29:19,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 13:29:19,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 13:29:19,493 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 13:29:19,493 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 13:29:19,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2023-02-14 13:29:20,355 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 13:29:20,558 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 13:29:20,558 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-1.i [2023-02-14 13:29:20,570 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bc90598/564ad07d0e3d462e8dbcd49584f8ee0d/FLAG63e7dee8f [2023-02-14 13:29:20,946 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98bc90598/564ad07d0e3d462e8dbcd49584f8ee0d [2023-02-14 13:29:20,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 13:29:20,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 13:29:20,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 13:29:20,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 13:29:20,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 13:29:20,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:29:20" (1/1) ... [2023-02-14 13:29:20,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280efe24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:20, skipping insertion in model container [2023-02-14 13:29:20,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:29:20" (1/1) ... [2023-02-14 13:29:20,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 13:29:20,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 13:29:21,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:29:21,185 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 13:29:21,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:29:21,226 INFO L208 MainTranslator]: Completed translation [2023-02-14 13:29:21,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21 WrapperNode [2023-02-14 13:29:21,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 13:29:21,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 13:29:21,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 13:29:21,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 13:29:21,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,254 INFO L138 Inliner]: procedures = 124, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-14 13:29:21,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 13:29:21,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 13:29:21,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 13:29:21,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 13:29:21,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,268 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 13:29:21,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 13:29:21,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 13:29:21,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 13:29:21,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (1/1) ... [2023-02-14 13:29:21,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:29:21,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:29:21,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-14 13:29:21,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-14 13:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 13:29:21,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 13:29:21,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 13:29:21,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 13:29:21,383 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 13:29:21,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 13:29:21,507 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 13:29:21,511 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 13:29:21,511 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 13:29:21,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:29:21 BoogieIcfgContainer [2023-02-14 13:29:21,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 13:29:21,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 13:29:21,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 13:29:21,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 13:29:21,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 01:29:20" (1/3) ... [2023-02-14 13:29:21,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8cb4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:29:21, skipping insertion in model container [2023-02-14 13:29:21,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:29:21" (2/3) ... [2023-02-14 13:29:21,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8cb4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:29:21, skipping insertion in model container [2023-02-14 13:29:21,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:29:21" (3/3) ... [2023-02-14 13:29:21,518 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0158_1-1.i [2023-02-14 13:29:21,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 13:29:21,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-02-14 13:29:21,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 13:29:21,584 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@4e01363c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 13:29:21,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-02-14 13:29:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 2.125) 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) [2023-02-14 13:29:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-14 13:29:21,603 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:29:21,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-14 13:29:21,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-02-14 13:29:21,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:29:21,607 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-02-14 13:29:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:29:21,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793702795] [2023-02-14 13:29:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:29:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:29:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:29:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:29:21,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:29:21,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793702795] [2023-02-14 13:29:21,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793702795] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:29:21,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:29:21,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:29:21,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709333728] [2023-02-14 13:29:21,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:29:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:29:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:29:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:29:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:29:21,924 INFO L87 Difference]: Start difference. First operand has 33 states, 16 states have (on average 2.125) 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) Second operand has 3 states, 2 states have (on average 1.5) 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) [2023-02-14 13:29:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:29:21,984 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-02-14 13:29:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:29:21,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2023-02-14 13:29:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:29:21,996 INFO L225 Difference]: With dead ends: 27 [2023-02-14 13:29:21,996 INFO L226 Difference]: Without dead ends: 25 [2023-02-14 13:29:21,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:29:22,001 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:29:22,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 15 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 13:29:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-14 13:29:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-14 13:29:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 24 states have internal predecessors, (26), 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) [2023-02-14 13:29:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-02-14 13:29:22,024 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 3 [2023-02-14 13:29:22,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:29:22,024 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-02-14 13:29:22,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2023-02-14 13:29:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-02-14 13:29:22,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-14 13:29:22,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:29:22,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-14 13:29:22,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 13:29:22,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-02-14 13:29:22,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:29:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-14 13:29:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:29:22,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023981879] [2023-02-14 13:29:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:29:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:29:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:29:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:29:22,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:29:22,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023981879] [2023-02-14 13:29:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023981879] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:29:22,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:29:22,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:29:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147370274] [2023-02-14 13:29:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:29:22,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:29:22,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:29:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:29:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:29:22,166 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 1.5) 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) [2023-02-14 13:29:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:29:22,187 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-02-14 13:29:22,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:29:22,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) 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 [2023-02-14 13:29:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:29:22,188 INFO L225 Difference]: With dead ends: 19 [2023-02-14 13:29:22,188 INFO L226 Difference]: Without dead ends: 19 [2023-02-14 13:29:22,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:29:22,192 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:29:22,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 13:29:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-14 13:29:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-14 13:29:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 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) [2023-02-14 13:29:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-02-14 13:29:22,197 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 3 [2023-02-14 13:29:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:29:22,199 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-02-14 13:29:22,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) 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) [2023-02-14 13:29:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-02-14 13:29:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 13:29:22,201 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:29:22,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:29:22,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 13:29:22,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-02-14 13:29:22,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:29:22,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1114117972, now seen corresponding path program 1 times [2023-02-14 13:29:22,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:29:22,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124937430] [2023-02-14 13:29:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:29:22,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:29:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:29:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:29:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:29:22,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124937430] [2023-02-14 13:29:22,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124937430] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:29:22,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:29:22,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 13:29:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490112372] [2023-02-14 13:29:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:29:22,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:29:22,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:29:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:29:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:29:22,413 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2023-02-14 13:29:22,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:29:22,460 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-02-14 13:29:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 13:29:22,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 [2023-02-14 13:29:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:29:22,461 INFO L225 Difference]: With dead ends: 18 [2023-02-14 13:29:22,461 INFO L226 Difference]: Without dead ends: 18 [2023-02-14 13:29:22,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-14 13:29:22,464 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:29:22,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 29 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 13:29:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-14 13:29:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-14 13:29:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) 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) [2023-02-14 13:29:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-02-14 13:29:22,470 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2023-02-14 13:29:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:29:22,470 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-02-14 13:29:22,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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) [2023-02-14 13:29:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-02-14 13:29:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 13:29:22,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:29:22,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:29:22,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 13:29:22,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-02-14 13:29:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:29:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash 177918831, now seen corresponding path program 1 times [2023-02-14 13:29:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:29:22,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327755776] [2023-02-14 13:29:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:29:22,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:29:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:29:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:29:22,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:29:22,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327755776] [2023-02-14 13:29:22,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327755776] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:29:22,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:29:22,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 13:29:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534367507] [2023-02-14 13:29:22,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:29:22,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:29:22,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:29:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:29:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:29:22,599 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2023-02-14 13:29:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:29:22,648 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-02-14 13:29:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 13:29:22,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 11 [2023-02-14 13:29:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:29:22,649 INFO L225 Difference]: With dead ends: 17 [2023-02-14 13:29:22,649 INFO L226 Difference]: Without dead ends: 17 [2023-02-14 13:29:22,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-14 13:29:22,656 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:29:22,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 13:29:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-14 13:29:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-14 13:29:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) 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) [2023-02-14 13:29:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-02-14 13:29:22,660 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2023-02-14 13:29:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:29:22,661 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-02-14 13:29:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2023-02-14 13:29:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-02-14 13:29:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-14 13:29:22,661 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:29:22,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:29:22,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 13:29:22,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-02-14 13:29:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:29:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1220516534, now seen corresponding path program 1 times [2023-02-14 13:29:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:29:22,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066669027] [2023-02-14 13:29:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:29:22,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:29:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:29:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:29:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:29:22,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066669027] [2023-02-14 13:29:22,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066669027] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:29:22,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:29:22,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 13:29:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144340280] [2023-02-14 13:29:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:29:22,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:29:22,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:29:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:29:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:29:22,776 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-14 13:29:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:29:22,809 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2023-02-14 13:29:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 13:29:22,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2023-02-14 13:29:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:29:22,810 INFO L225 Difference]: With dead ends: 16 [2023-02-14 13:29:22,810 INFO L226 Difference]: Without dead ends: 16 [2023-02-14 13:29:22,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-14 13:29:22,811 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:29:22,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 13:29:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-14 13:29:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-14 13:29:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) 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) [2023-02-14 13:29:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-02-14 13:29:22,816 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2023-02-14 13:29:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:29:22,816 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-02-14 13:29:22,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-14 13:29:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-02-14 13:29:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 13:29:22,817 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:29:22,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:29:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 13:29:22,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-02-14 13:29:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:29:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash -818693038, now seen corresponding path program 1 times [2023-02-14 13:29:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:29:22,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850093005] [2023-02-14 13:29:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:29:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:29:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:29:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:29:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:29:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850093005] [2023-02-14 13:29:22,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850093005] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:29:22,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:29:22,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 13:29:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838210413] [2023-02-14 13:29:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:29:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 13:29:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:29:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 13:29:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 13:29:22,980 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2023-02-14 13:29:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:29:23,029 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-02-14 13:29:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 13:29:23,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 [2023-02-14 13:29:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:29:23,031 INFO L225 Difference]: With dead ends: 15 [2023-02-14 13:29:23,031 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 13:29:23,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-14 13:29:23,032 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:29:23,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 13:29:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 13:29:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 13:29:23,033 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) [2023-02-14 13:29:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 13:29:23,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-02-14 13:29:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:29:23,034 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 13:29:23,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2023-02-14 13:29:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 13:29:23,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 13:29:23,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 16 remaining) [2023-02-14 13:29:23,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 16 remaining) [2023-02-14 13:29:23,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2023-02-14 13:29:23,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2023-02-14 13:29:23,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2023-02-14 13:29:23,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2023-02-14 13:29:23,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2023-02-14 13:29:23,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2023-02-14 13:29:23,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 16 remaining) [2023-02-14 13:29:23,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2023-02-14 13:29:23,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2023-02-14 13:29:23,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2023-02-14 13:29:23,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (3 of 16 remaining) [2023-02-14 13:29:23,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (2 of 16 remaining) [2023-02-14 13:29:23,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (1 of 16 remaining) [2023-02-14 13:29:23,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2023-02-14 13:29:23,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 13:29:23,041 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-02-14 13:29:23,043 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 13:29:23,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 01:29:23 BoogieIcfgContainer [2023-02-14 13:29:23,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 13:29:23,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 13:29:23,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 13:29:23,046 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 13:29:23,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:29:21" (3/4) ... [2023-02-14 13:29:23,048 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 13:29:23,056 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-14 13:29:23,056 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 13:29:23,057 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-14 13:29:23,057 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 13:29:23,079 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 13:29:23,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 13:29:23,080 INFO L158 Benchmark]: Toolchain (without parser) took 2130.26ms. Allocated memory is still 169.9MB. Free memory was 132.2MB in the beginning and 100.8MB in the end (delta: 31.4MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2023-02-14 13:29:23,080 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 13:29:23,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.93ms. Allocated memory is still 169.9MB. Free memory was 132.2MB in the beginning and 115.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-14 13:29:23,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.87ms. Allocated memory is still 169.9MB. Free memory was 115.4MB in the beginning and 114.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 13:29:23,081 INFO L158 Benchmark]: Boogie Preprocessor took 14.73ms. Allocated memory is still 169.9MB. Free memory was 114.1MB in the beginning and 112.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 13:29:23,081 INFO L158 Benchmark]: RCFGBuilder took 242.64ms. Allocated memory is still 169.9MB. Free memory was 112.5MB in the beginning and 99.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-14 13:29:23,081 INFO L158 Benchmark]: TraceAbstraction took 1531.61ms. Allocated memory is still 169.9MB. Free memory was 98.6MB in the beginning and 102.9MB in the end (delta: -4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 13:29:23,082 INFO L158 Benchmark]: Witness Printer took 33.92ms. Allocated memory is still 169.9MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 13:29:23,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.93ms. Allocated memory is still 169.9MB. Free memory was 132.2MB in the beginning and 115.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.87ms. Allocated memory is still 169.9MB. Free memory was 115.4MB in the beginning and 114.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.73ms. Allocated memory is still 169.9MB. Free memory was 114.1MB in the beginning and 112.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 242.64ms. Allocated memory is still 169.9MB. Free memory was 112.5MB in the beginning and 99.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1531.61ms. Allocated memory is still 169.9MB. Free memory was 98.6MB in the beginning and 102.9MB in the end (delta: -4.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.92ms. Allocated memory is still 169.9MB. Free memory was 102.9MB in the beginning and 100.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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: -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: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 543]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 524]: 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, 33 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 64 mSDtfsCounter, 150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-14 13:29:23,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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