./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e 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/memsafety-ext3/getNumbers1-1.c -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 ae33a6a64877fc5c824e4d2dbc13817f946c171e566de8189cdbc86c749355b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:00:37,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:00:37,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:00:37,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:00:37,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:00:37,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:00:37,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:00:37,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:00:37,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:00:37,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:00:37,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:00:37,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:00:37,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:00:37,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:00:37,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:00:37,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:00:37,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:00:37,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:00:37,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:00:37,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:00:37,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:00:37,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:00:37,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:00:37,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:00:37,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:00:37,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:00:37,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:00:37,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:00:37,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:00:37,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:00:37,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:00:37,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:00:37,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:00:37,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:00:37,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:00:37,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:00:37,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:00:37,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:00:37,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:00:37,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:00:37,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:00:37,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 09:00:37,450 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:00:37,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:00:37,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:00:37,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:00:37,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:00:37,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:00:37,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:00:37,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:00:37,452 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:00:37,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:00:37,453 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 09:00:37,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:00:37,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:00:37,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 09:00:37,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:00:37,453 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 09:00:37,453 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 09:00:37,454 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 09:00:37,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:00:37,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 09:00:37,454 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 09:00:37,454 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:00:37,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:00:37,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:00:37,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:00:37,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:00:37,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:00:37,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:00:37,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:00:37,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:00:37,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:00:37,456 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:00:37,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:00:37,456 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:00:37,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae33a6a64877fc5c824e4d2dbc13817f946c171e566de8189cdbc86c749355b6 [2023-02-17 09:00:37,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:00:37,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:00:37,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:00:37,689 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:00:37,689 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:00:37,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2023-02-17 09:00:38,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:00:38,896 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:00:38,896 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2023-02-17 09:00:38,900 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10972f28c/74462b79f1ec441bab38f48fd27f4d65/FLAGbeebb97e9 [2023-02-17 09:00:38,910 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10972f28c/74462b79f1ec441bab38f48fd27f4d65 [2023-02-17 09:00:38,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:00:38,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:00:38,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:00:38,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:00:38,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:00:38,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:00:38" (1/1) ... [2023-02-17 09:00:38,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617d7fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:38, skipping insertion in model container [2023-02-17 09:00:38,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:00:38" (1/1) ... [2023-02-17 09:00:38,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:00:38,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:00:39,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:00:39,064 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:00:39,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:00:39,084 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:00:39,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39 WrapperNode [2023-02-17 09:00:39,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:00:39,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:00:39,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:00:39,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:00:39,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,107 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-02-17 09:00:39,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:00:39,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:00:39,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:00:39,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:00:39,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,136 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:00:39,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:00:39,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:00:39,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:00:39,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (1/1) ... [2023-02-17 09:00:39,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:00:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:39,178 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) [2023-02-17 09:00:39,185 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 [2023-02-17 09:00:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 09:00:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:00:39,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:00:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 09:00:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 09:00:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 09:00:39,255 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:00:39,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:00:39,360 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:00:39,364 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:00:39,365 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 09:00:39,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:00:39 BoogieIcfgContainer [2023-02-17 09:00:39,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:00:39,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:00:39,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:00:39,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:00:39,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:00:38" (1/3) ... [2023-02-17 09:00:39,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6cd4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:00:39, skipping insertion in model container [2023-02-17 09:00:39,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:00:39" (2/3) ... [2023-02-17 09:00:39,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6cd4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:00:39, skipping insertion in model container [2023-02-17 09:00:39,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:00:39" (3/3) ... [2023-02-17 09:00:39,372 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers1-1.c [2023-02-17 09:00:39,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:00:39,382 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-02-17 09:00:39,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:00:39,412 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;@5b12c6ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:00:39,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-02-17 09:00:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:00:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 09:00:39,418 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:39,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 09:00:39,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-02-17 09:00:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-02-17 09:00:39,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:39,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960668094] [2023-02-17 09:00:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:39,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:39,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960668094] [2023-02-17 09:00:39,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960668094] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:39,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:39,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:00:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542540807] [2023-02-17 09:00:39,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:39,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:00:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:00:39,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:00:39,573 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-17 09:00:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:39,609 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-02-17 09:00:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:00:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-02-17 09:00:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:39,624 INFO L225 Difference]: With dead ends: 19 [2023-02-17 09:00:39,626 INFO L226 Difference]: Without dead ends: 17 [2023-02-17 09:00:39,627 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 [2023-02-17 09:00:39,629 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:39,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-17 09:00:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-17 09:00:39,654 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) [2023-02-17 09:00:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-02-17 09:00:39,656 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2023-02-17 09:00:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:39,665 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-02-17 09:00:39,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-17 09:00:39,665 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-02-17 09:00:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 09:00:39,665 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:39,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 09:00:39,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:00:39,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-02-17 09:00:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:39,667 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2023-02-17 09:00:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:39,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052703026] [2023-02-17 09:00:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:39,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:39,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:39,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052703026] [2023-02-17 09:00:39,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052703026] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:39,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:39,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:00:39,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540190878] [2023-02-17 09:00:39,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:39,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:00:39,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:00:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:00:39,767 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-17 09:00:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:39,804 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-02-17 09:00:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:00:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-02-17 09:00:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:39,805 INFO L225 Difference]: With dead ends: 20 [2023-02-17 09:00:39,805 INFO L226 Difference]: Without dead ends: 20 [2023-02-17 09:00:39,806 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 [2023-02-17 09:00:39,806 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:39,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-17 09:00:39,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2023-02-17 09:00:39,809 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) [2023-02-17 09:00:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-02-17 09:00:39,810 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2023-02-17 09:00:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:39,810 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-02-17 09:00:39,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-17 09:00:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-02-17 09:00:39,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 09:00:39,822 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:39,822 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-02-17 09:00:39,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:00:39,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-02-17 09:00:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:39,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2023-02-17 09:00:39,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:39,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26129919] [2023-02-17 09:00:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:39,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:39,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:39,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26129919] [2023-02-17 09:00:39,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26129919] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:39,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380185520] [2023-02-17 09:00:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:39,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:39,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:39,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:39,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:00:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:39,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 09:00:39,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:40,029 INFO L350 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 6 treesize of output 5 [2023-02-17 09:00:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380185520] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:40,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:40,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-02-17 09:00:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053709014] [2023-02-17 09:00:40,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:40,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 09:00:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 09:00:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-17 09:00:40,114 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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) [2023-02-17 09:00:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:40,184 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2023-02-17 09:00:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 09:00:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-17 09:00:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:40,187 INFO L225 Difference]: With dead ends: 26 [2023-02-17 09:00:40,187 INFO L226 Difference]: Without dead ends: 26 [2023-02-17 09:00:40,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-02-17 09:00:40,189 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:40,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 38 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:40,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-17 09:00:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-17 09:00:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 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) [2023-02-17 09:00:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-02-17 09:00:40,194 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 7 [2023-02-17 09:00:40,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:40,194 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-02-17 09:00:40,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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) [2023-02-17 09:00:40,194 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-02-17 09:00:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 09:00:40,195 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:40,195 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:40,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:40,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:40,403 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-02-17 09:00:40,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 1 times [2023-02-17 09:00:40,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:40,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715669056] [2023-02-17 09:00:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 09:00:40,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:40,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715669056] [2023-02-17 09:00:40,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715669056] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:00:40,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:00:40,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:00:40,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961916172] [2023-02-17 09:00:40,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:00:40,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:00:40,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:00:40,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:00:40,559 INFO L87 Difference]: Start difference. First operand 26 states and 27 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) [2023-02-17 09:00:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:40,579 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-02-17 09:00:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:00:40,580 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 19 [2023-02-17 09:00:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:40,580 INFO L225 Difference]: With dead ends: 31 [2023-02-17 09:00:40,581 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 09:00:40,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:00:40,585 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:40,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 09:00:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2023-02-17 09:00:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 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) [2023-02-17 09:00:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-02-17 09:00:40,590 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2023-02-17 09:00:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:40,590 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-02-17 09:00:40,591 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) [2023-02-17 09:00:40,591 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-02-17 09:00:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 09:00:40,591 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:40,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:40,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:00:40,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-02-17 09:00:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139287, now seen corresponding path program 1 times [2023-02-17 09:00:40,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470940200] [2023-02-17 09:00:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:00:40,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470940200] [2023-02-17 09:00:40,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470940200] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:00:40,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001478707] [2023-02-17 09:00:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:40,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:00:40,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:00:40,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:00:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:00:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:00:40,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:00:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:00:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:00:40,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001478707] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:00:40,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:00:40,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-17 09:00:40,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787066549] [2023-02-17 09:00:40,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:00:40,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 09:00:40,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:00:40,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 09:00:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:00:40,805 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-02-17 09:00:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:00:40,851 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2023-02-17 09:00:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 09:00:40,851 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 09:00:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:00:40,853 INFO L225 Difference]: With dead ends: 46 [2023-02-17 09:00:40,853 INFO L226 Difference]: Without dead ends: 46 [2023-02-17 09:00:40,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-02-17 09:00:40,855 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:00:40,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 74 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:00:40,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-17 09:00:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-02-17 09:00:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 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) [2023-02-17 09:00:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2023-02-17 09:00:40,869 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 19 [2023-02-17 09:00:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:00:40,869 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2023-02-17 09:00:40,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-02-17 09:00:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2023-02-17 09:00:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 09:00:40,870 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:00:40,870 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:00:40,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 09:00:41,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:00:41,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2023-02-17 09:00:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:00:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 2 times [2023-02-17 09:00:41,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:00:41,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536331977] [2023-02-17 09:00:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:00:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:00:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:00:41,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:00:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:00:41,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:00:41,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 09:00:41,146 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2023-02-17 09:00:41,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-02-17 09:00:41,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-02-17 09:00:41,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2023-02-17 09:00:41,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2023-02-17 09:00:41,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 09:00:41,150 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-02-17 09:00:41,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 09:00:41,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 09:00:41 BoogieIcfgContainer [2023-02-17 09:00:41,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 09:00:41,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:00:41,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:00:41,174 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:00:41,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:00:39" (3/4) ... [2023-02-17 09:00:41,175 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-17 09:00:41,204 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 09:00:41,205 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:00:41,221 INFO L158 Benchmark]: Toolchain (without parser) took 2308.38ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 108.2MB in the beginning and 71.3MB in the end (delta: 36.9MB). Peak memory consumption was 86.9MB. Max. memory is 16.1GB. [2023-02-17 09:00:41,221 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:00:41,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.16ms. Allocated memory is still 144.7MB. Free memory was 107.9MB in the beginning and 98.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 09:00:41,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.44ms. Allocated memory is still 144.7MB. Free memory was 98.1MB in the beginning and 96.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:00:41,222 INFO L158 Benchmark]: Boogie Preprocessor took 32.61ms. Allocated memory is still 144.7MB. Free memory was 96.6MB in the beginning and 95.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:00:41,222 INFO L158 Benchmark]: RCFGBuilder took 223.80ms. Allocated memory is still 144.7MB. Free memory was 95.5MB in the beginning and 85.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 09:00:41,222 INFO L158 Benchmark]: TraceAbstraction took 1805.74ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 84.8MB in the beginning and 73.4MB in the end (delta: 11.4MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. [2023-02-17 09:00:41,222 INFO L158 Benchmark]: Witness Printer took 46.76ms. Allocated memory is still 192.9MB. Free memory was 73.4MB in the beginning and 71.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:00:41,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.16ms. Allocated memory is still 144.7MB. Free memory was 107.9MB in the beginning and 98.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.44ms. Allocated memory is still 144.7MB. Free memory was 98.1MB in the beginning and 96.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.61ms. Allocated memory is still 144.7MB. Free memory was 96.6MB in the beginning and 95.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 223.80ms. Allocated memory is still 144.7MB. Free memory was 95.5MB in the beginning and 85.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1805.74ms. Allocated memory was 144.7MB in the beginning and 192.9MB in the end (delta: 48.2MB). Free memory was 84.8MB in the beginning and 73.4MB in the end (delta: 11.4MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. * Witness Printer took 46.76ms. Allocated memory is still 192.9MB. Free memory was 73.4MB in the beginning and 71.3MB 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L19] CALL, EXPR getNumbers() [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=0] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=0] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=0] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=1] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=1] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=1] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=2] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=2] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=2] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=3] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=3] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=3] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=4] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=4] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=4] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=5] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=5] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=5] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=6] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=6] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=6] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=7] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=7] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=7] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=8] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=8] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=8] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=9] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=9] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=9] [L10] ++i VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=10] [L10] COND FALSE !(i < 10) VAL [alloca(10 * sizeof(int))={10:0}, array={10:0}, i=10] [L14] return array; [L19] RET, EXPR getNumbers() [L19] int *numbers = getNumbers(); [L21] int i = 0; VAL [i=0, numbers={10:0}] [L21] COND TRUE i < 10 [L22] numbers + i - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 65 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, InterpolantAutomatonStates: 30, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 683 SizeOfPredicates, 3 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 22/94 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-02-17 09:00:41,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)