./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c 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/termination-crafted/LexIndexValue-Array-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 d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 02:44:42,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 02:44:42,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 02:44:42,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 02:44:42,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 02:44:42,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 02:44:42,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 02:44:42,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 02:44:42,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 02:44:42,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 02:44:42,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 02:44:42,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 02:44:42,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 02:44:42,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 02:44:42,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 02:44:42,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 02:44:42,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 02:44:42,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 02:44:42,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 02:44:42,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 02:44:42,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 02:44:42,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 02:44:42,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 02:44:42,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 02:44:42,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 02:44:42,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 02:44:42,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 02:44:42,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 02:44:42,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 02:44:42,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 02:44:42,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 02:44:42,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 02:44:42,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 02:44:42,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 02:44:42,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 02:44:42,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 02:44:42,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 02:44:42,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 02:44:42,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 02:44:42,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 02:44:42,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 02:44:42,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 02:44:42,961 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 02:44:42,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 02:44:42,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 02:44:42,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 02:44:42,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 02:44:42,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 02:44:42,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 02:44:42,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 02:44:42,963 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 02:44:42,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 02:44:42,964 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 02:44:42,964 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 02:44:42,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 02:44:42,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 02:44:42,965 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 02:44:42,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 02:44:42,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 02:44:42,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 02:44:42,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:44:42,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 02:44:42,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 02:44:42,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 02:44:42,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 02:44:42,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 02:44:42,967 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 02:44:42,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 02:44:42,967 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 02:44:42,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff [2023-02-17 02:44:43,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 02:44:43,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 02:44:43,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 02:44:43,182 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 02:44:43,182 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 02:44:43,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2023-02-17 02:44:44,110 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 02:44:44,284 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 02:44:44,284 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2023-02-17 02:44:44,288 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bbb7d4c7/c99c339c72b74d7881aa3a0402360327/FLAG0faf6d65f [2023-02-17 02:44:44,302 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bbb7d4c7/c99c339c72b74d7881aa3a0402360327 [2023-02-17 02:44:44,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 02:44:44,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 02:44:44,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 02:44:44,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 02:44:44,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 02:44:44,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636b5644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44, skipping insertion in model container [2023-02-17 02:44:44,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 02:44:44,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 02:44:44,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:44:44,431 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 02:44:44,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:44:44,452 INFO L208 MainTranslator]: Completed translation [2023-02-17 02:44:44,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44 WrapperNode [2023-02-17 02:44:44,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 02:44:44,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 02:44:44,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 02:44:44,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 02:44:44,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,472 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-02-17 02:44:44,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 02:44:44,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 02:44:44,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 02:44:44,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 02:44:44,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 02:44:44,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 02:44:44,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 02:44:44,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 02:44:44,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (1/1) ... [2023-02-17 02:44:44,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:44:44,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:44,522 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 02:44:44,528 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 02:44:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 02:44:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 02:44:44,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 02:44:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 02:44:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 02:44:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 02:44:44,594 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 02:44:44,596 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 02:44:44,693 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 02:44:44,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 02:44:44,697 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 02:44:44,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:44:44 BoogieIcfgContainer [2023-02-17 02:44:44,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 02:44:44,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 02:44:44,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 02:44:44,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 02:44:44,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:44:44" (1/3) ... [2023-02-17 02:44:44,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae475e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:44:44, skipping insertion in model container [2023-02-17 02:44:44,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:44:44" (2/3) ... [2023-02-17 02:44:44,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae475e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:44:44, skipping insertion in model container [2023-02-17 02:44:44,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:44:44" (3/3) ... [2023-02-17 02:44:44,720 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2023-02-17 02:44:44,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 02:44:44,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-02-17 02:44:44,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 02:44:44,805 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;@57f4c659, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 02:44:44,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-02-17 02:44:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 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) [2023-02-17 02:44:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 02:44:44,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:44,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 02:44:44,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:44,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:44,819 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-02-17 02:44:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:44,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537721259] [2023-02-17 02:44:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:44,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:44,971 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 02:44:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:44,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537721259] [2023-02-17 02:44:44,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537721259] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:44:44,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:44:44,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:44:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281294096] [2023-02-17 02:44:44,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:44:44,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:44:44,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:44:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:44:44,997 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 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 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 02:44:45,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:45,035 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2023-02-17 02:44:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:44:45,037 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 02:44:45,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:45,042 INFO L225 Difference]: With dead ends: 25 [2023-02-17 02:44:45,042 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 02:44:45,043 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 02:44:45,046 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:45,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 20 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:44:45,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 02:44:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 02:44:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 22 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) [2023-02-17 02:44:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-17 02:44:45,065 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2023-02-17 02:44:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:45,065 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-17 02:44:45,065 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 02:44:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-17 02:44:45,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 02:44:45,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:45,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 02:44:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 02:44:45,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2023-02-17 02:44:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:45,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176289984] [2023-02-17 02:44:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:45,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:45,151 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 02:44:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:45,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176289984] [2023-02-17 02:44:45,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176289984] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:44:45,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:44:45,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:44:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26758679] [2023-02-17 02:44:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:44:45,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 02:44:45,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:45,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 02:44:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 02:44:45,155 INFO L87 Difference]: Start difference. First operand 23 states and 26 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 02:44:45,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:45,195 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2023-02-17 02:44:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 02:44:45,195 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 02:44:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:45,196 INFO L225 Difference]: With dead ends: 27 [2023-02-17 02:44:45,196 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 02:44:45,196 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 02:44:45,197 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:45,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:44:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 02:44:45,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-02-17 02:44:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 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 02:44:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-02-17 02:44:45,201 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2023-02-17 02:44:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:45,202 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-02-17 02:44:45,202 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 02:44:45,202 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-02-17 02:44:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 02:44:45,202 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:45,203 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 02:44:45,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2023-02-17 02:44:45,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:45,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504758278] [2023-02-17 02:44:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:45,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:45,333 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 02:44:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:45,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504758278] [2023-02-17 02:44:45,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504758278] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:45,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189136497] [2023-02-17 02:44:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:45,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:45,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:45,338 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 02:44:45,350 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 02:44:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:45,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 02:44:45,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:45,437 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 02:44:45,452 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 02:44:45,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:44:45,498 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 02:44:45,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189136497] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:44:45,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:44:45,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-02-17 02:44:45,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691924409] [2023-02-17 02:44:45,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:44:45,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 02:44:45,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 02:44:45,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 02:44:45,500 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 02:44:45,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:45,598 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2023-02-17 02:44:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 02:44:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) Word has length 8 [2023-02-17 02:44:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:45,601 INFO L225 Difference]: With dead ends: 65 [2023-02-17 02:44:45,602 INFO L226 Difference]: Without dead ends: 65 [2023-02-17 02:44:45,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-17 02:44:45,605 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:45,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 67 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:44:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-17 02:44:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 37. [2023-02-17 02:44:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 02:44:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-17 02:44:45,614 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2023-02-17 02:44:45,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:45,615 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-17 02:44:45,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 02:44:45,616 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-17 02:44:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 02:44:45,616 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:45,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:45,625 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 02:44:45,822 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 02:44:45,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:45,824 INFO L85 PathProgramCache]: Analyzing trace with hash -144026405, now seen corresponding path program 1 times [2023-02-17 02:44:45,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:45,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300354183] [2023-02-17 02:44:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 02:44:45,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300354183] [2023-02-17 02:44:45,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300354183] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:45,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340158605] [2023-02-17 02:44:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:45,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:45,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:45,923 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 02:44:45,925 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 02:44:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:45,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 02:44:45,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:45,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:44:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:46,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340158605] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:44:46,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:44:46,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2023-02-17 02:44:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517737194] [2023-02-17 02:44:46,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:44:46,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 02:44:46,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 02:44:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2023-02-17 02:44:46,032 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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 02:44:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:46,133 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2023-02-17 02:44:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 02:44:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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 14 [2023-02-17 02:44:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:46,136 INFO L225 Difference]: With dead ends: 56 [2023-02-17 02:44:46,136 INFO L226 Difference]: Without dead ends: 56 [2023-02-17 02:44:46,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-02-17 02:44:46,138 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:46,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:44:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-17 02:44:46,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-02-17 02:44:46,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 53 states have internal predecessors, (61), 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 02:44:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2023-02-17 02:44:46,149 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 14 [2023-02-17 02:44:46,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:46,150 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2023-02-17 02:44:46,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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 02:44:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2023-02-17 02:44:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 02:44:46,151 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:46,151 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2023-02-17 02:44:46,159 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 02:44:46,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-17 02:44:46,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:46,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:46,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2023-02-17 02:44:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:46,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424451934] [2023-02-17 02:44:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:46,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:46,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424451934] [2023-02-17 02:44:46,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424451934] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:46,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643043381] [2023-02-17 02:44:46,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:44:46,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:46,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:46,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:44:46,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 02:44:46,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:44:46,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:44:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 02:44:46,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:46,546 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 02:44:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:46,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 02:44:46,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643043381] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:44:46,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:44:46,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2023-02-17 02:44:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175963593] [2023-02-17 02:44:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:44:46,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 02:44:46,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:46,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 02:44:46,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-17 02:44:46,607 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 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 02:44:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:46,652 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-02-17 02:44:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 02:44:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 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) Word has length 20 [2023-02-17 02:44:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:46,655 INFO L225 Difference]: With dead ends: 53 [2023-02-17 02:44:46,655 INFO L226 Difference]: Without dead ends: 53 [2023-02-17 02:44:46,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-17 02:44:46,656 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:46,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:44:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-17 02:44:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-17 02:44:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 52 states have internal predecessors, (59), 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 02:44:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2023-02-17 02:44:46,666 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 20 [2023-02-17 02:44:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:46,667 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2023-02-17 02:44:46,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 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 02:44:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2023-02-17 02:44:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-17 02:44:46,668 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:46,668 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:46,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 02:44:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:46,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1931690838, now seen corresponding path program 1 times [2023-02-17 02:44:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:46,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556566127] [2023-02-17 02:44:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-17 02:44:46,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:46,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556566127] [2023-02-17 02:44:46,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556566127] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:44:46,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:44:46,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 02:44:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022555313] [2023-02-17 02:44:46,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:44:46,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 02:44:46,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 02:44:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 02:44:46,947 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-02-17 02:44:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:46,968 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2023-02-17 02:44:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:44:46,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 32 [2023-02-17 02:44:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:46,971 INFO L225 Difference]: With dead ends: 56 [2023-02-17 02:44:46,971 INFO L226 Difference]: Without dead ends: 56 [2023-02-17 02:44:46,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:44:46,972 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:46,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:44:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-17 02:44:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2023-02-17 02:44:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.183673469387755) internal successors, (58), 52 states have internal predecessors, (58), 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 02:44:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2023-02-17 02:44:46,982 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 32 [2023-02-17 02:44:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:46,982 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2023-02-17 02:44:46,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-02-17 02:44:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2023-02-17 02:44:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-17 02:44:46,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:46,983 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:46,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 02:44:46,984 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1109903955, now seen corresponding path program 1 times [2023-02-17 02:44:46,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:46,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72206708] [2023-02-17 02:44:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:46,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:47,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72206708] [2023-02-17 02:44:47,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72206708] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:47,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297046409] [2023-02-17 02:44:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:47,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:47,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:47,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:44:47,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 02:44:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:47,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 02:44:47,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:47,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:44:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:47,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297046409] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:44:47,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:44:47,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-02-17 02:44:47,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972328226] [2023-02-17 02:44:47,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:44:47,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 02:44:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 02:44:47,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-02-17 02:44:47,230 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 02:44:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:47,274 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2023-02-17 02:44:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 02:44:47,275 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 34 [2023-02-17 02:44:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:47,275 INFO L225 Difference]: With dead ends: 85 [2023-02-17 02:44:47,275 INFO L226 Difference]: Without dead ends: 85 [2023-02-17 02:44:47,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-02-17 02:44:47,276 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:47,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:44:47,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-17 02:44:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-17 02:44:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 84 states have internal predecessors, (90), 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 02:44:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2023-02-17 02:44:47,287 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 34 [2023-02-17 02:44:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:47,287 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2023-02-17 02:44:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 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 02:44:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2023-02-17 02:44:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-17 02:44:47,289 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:47,290 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:47,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 02:44:47,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:47,494 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:47,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:47,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2067985861, now seen corresponding path program 2 times [2023-02-17 02:44:47,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:47,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870046020] [2023-02-17 02:44:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:47,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:47,718 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:44:47,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:47,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870046020] [2023-02-17 02:44:47,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870046020] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:47,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696202962] [2023-02-17 02:44:47,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:44:47,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:47,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:47,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:44:47,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 02:44:47,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-17 02:44:47,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:44:47,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 02:44:47,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:47,869 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#a~0#1.base_20| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_20|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#a~0#1.base_20| 0)))) is different from true [2023-02-17 02:44:47,871 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-17 02:44:47,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 02:44:47,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696202962] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:44:47,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:44:47,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [17] total 19 [2023-02-17 02:44:47,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019150230] [2023-02-17 02:44:47,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:44:47,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 02:44:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 02:44:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=169, Unknown=1, NotChecked=32, Total=342 [2023-02-17 02:44:47,873 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 02:44:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:47,903 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2023-02-17 02:44:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 02:44:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-02-17 02:44:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:47,904 INFO L225 Difference]: With dead ends: 84 [2023-02-17 02:44:47,904 INFO L226 Difference]: Without dead ends: 82 [2023-02-17 02:44:47,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=169, Unknown=1, NotChecked=32, Total=342 [2023-02-17 02:44:47,905 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:47,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 16 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2023-02-17 02:44:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-17 02:44:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-02-17 02:44:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 81 states have internal predecessors, (86), 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 02:44:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2023-02-17 02:44:47,907 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 66 [2023-02-17 02:44:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:47,907 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2023-02-17 02:44:47,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 02:44:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2023-02-17 02:44:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-17 02:44:47,908 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:47,908 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:47,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 02:44:48,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:48,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1234078250, now seen corresponding path program 1 times [2023-02-17 02:44:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:48,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400697734] [2023-02-17 02:44:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:48,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 02:44:48,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:48,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400697734] [2023-02-17 02:44:48,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400697734] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:48,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036203993] [2023-02-17 02:44:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:48,307 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:44:48,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 02:44:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:48,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 02:44:48,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 02:44:48,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:44:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 02:44:48,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036203993] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:44:48,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:44:48,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2023-02-17 02:44:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308666046] [2023-02-17 02:44:48,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:44:48,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 02:44:48,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 02:44:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 02:44:48,703 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 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 02:44:48,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:48,794 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2023-02-17 02:44:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-17 02:44:48,795 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 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 68 [2023-02-17 02:44:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:48,796 INFO L225 Difference]: With dead ends: 146 [2023-02-17 02:44:48,796 INFO L226 Difference]: Without dead ends: 146 [2023-02-17 02:44:48,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 106 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 02:44:48,797 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:48,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:44:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-02-17 02:44:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-02-17 02:44:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 143 states have (on average 1.048951048951049) internal successors, (150), 145 states have internal predecessors, (150), 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 02:44:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2023-02-17 02:44:48,800 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 68 [2023-02-17 02:44:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:48,800 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2023-02-17 02:44:48,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 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 02:44:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2023-02-17 02:44:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-02-17 02:44:48,801 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:48,802 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:48,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 02:44:49,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:49,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:49,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:49,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1063029254, now seen corresponding path program 2 times [2023-02-17 02:44:49,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:49,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121673349] [2023-02-17 02:44:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:49,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 02:44:49,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:49,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121673349] [2023-02-17 02:44:49,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121673349] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:49,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698828615] [2023-02-17 02:44:49,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:44:49,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:49,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:49,673 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:44:49,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 02:44:49,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:44:49,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:44:49,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-17 02:44:49,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 02:44:50,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:44:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1773 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 02:44:51,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698828615] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:44:51,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:44:51,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2023-02-17 02:44:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711316140] [2023-02-17 02:44:51,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:44:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-17 02:44:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-17 02:44:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2023-02-17 02:44:51,059 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand has 65 states, 65 states have (on average 3.953846153846154) internal successors, (257), 65 states have internal predecessors, (257), 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 02:44:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:51,227 INFO L93 Difference]: Finished difference Result 274 states and 278 transitions. [2023-02-17 02:44:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-02-17 02:44:51,228 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.953846153846154) internal successors, (257), 65 states have internal predecessors, (257), 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 132 [2023-02-17 02:44:51,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:51,229 INFO L225 Difference]: With dead ends: 274 [2023-02-17 02:44:51,229 INFO L226 Difference]: Without dead ends: 274 [2023-02-17 02:44:51,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 202 SyntacticMatches, 30 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2023-02-17 02:44:51,231 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:51,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:44:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-02-17 02:44:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2023-02-17 02:44:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 271 states have (on average 1.0258302583025831) internal successors, (278), 273 states have internal predecessors, (278), 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 02:44:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 278 transitions. [2023-02-17 02:44:51,234 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 278 transitions. Word has length 132 [2023-02-17 02:44:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:51,235 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 278 transitions. [2023-02-17 02:44:51,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.953846153846154) internal successors, (257), 65 states have internal predecessors, (257), 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 02:44:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 278 transitions. [2023-02-17 02:44:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-02-17 02:44:51,237 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:44:51,237 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:44:51,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 02:44:51,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:51,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-02-17 02:44:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:44:51,443 INFO L85 PathProgramCache]: Analyzing trace with hash -251252122, now seen corresponding path program 3 times [2023-02-17 02:44:51,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:44:51,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994238879] [2023-02-17 02:44:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:44:51,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:44:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:44:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7629 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 02:44:53,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:44:53,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994238879] [2023-02-17 02:44:53,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994238879] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:44:53,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938144564] [2023-02-17 02:44:53,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 02:44:53,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:44:53,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:44:53,866 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:44:53,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 02:44:53,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-17 02:44:53,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:44:53,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 02:44:53,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:44:53,957 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 02:44:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7629 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2023-02-17 02:44:54,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 02:44:54,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938144564] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:44:54,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:44:54,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [65] total 69 [2023-02-17 02:44:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384093852] [2023-02-17 02:44:54,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:44:54,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 02:44:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:44:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 02:44:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2093, Invalid=2599, Unknown=0, NotChecked=0, Total=4692 [2023-02-17 02:44:54,106 INFO L87 Difference]: Start difference. First operand 274 states and 278 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 02:44:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:44:54,161 INFO L93 Difference]: Finished difference Result 274 states and 278 transitions. [2023-02-17 02:44:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 02:44:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2023-02-17 02:44:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:44:54,161 INFO L225 Difference]: With dead ends: 274 [2023-02-17 02:44:54,162 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 02:44:54,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2099, Invalid=2731, Unknown=0, NotChecked=0, Total=4830 [2023-02-17 02:44:54,164 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:44:54,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 48 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:44:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 02:44:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 02:44:54,165 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) [2023-02-17 02:44:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 02:44:54,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 260 [2023-02-17 02:44:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:44:54,177 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 02:44:54,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 02:44:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 02:44:54,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 02:44:54,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-02-17 02:44:54,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-02-17 02:44:54,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-02-17 02:44:54,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-02-17 02:44:54,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-02-17 02:44:54,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-02-17 02:44:54,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2023-02-17 02:44:54,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2023-02-17 02:44:54,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2023-02-17 02:44:54,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 02:44:54,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 02:44:54,391 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1] [2023-02-17 02:44:54,392 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 02:44:54,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 02:44:54 BoogieIcfgContainer [2023-02-17 02:44:54,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 02:44:54,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 02:44:54,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 02:44:54,397 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 02:44:54,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:44:44" (3/4) ... [2023-02-17 02:44:54,399 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 02:44:54,405 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-17 02:44:54,405 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-17 02:44:54,405 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 02:44:54,406 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 02:44:54,441 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 02:44:54,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 02:44:54,442 INFO L158 Benchmark]: Toolchain (without parser) took 10135.59ms. Allocated memory was 134.2MB in the beginning and 268.4MB in the end (delta: 134.2MB). Free memory was 103.3MB in the beginning and 231.6MB in the end (delta: -128.3MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-02-17 02:44:54,442 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:44:54,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.28ms. Allocated memory is still 134.2MB. Free memory was 102.9MB in the beginning and 93.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 02:44:54,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.35ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 91.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 02:44:54,442 INFO L158 Benchmark]: Boogie Preprocessor took 22.21ms. Allocated memory is still 134.2MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 02:44:54,443 INFO L158 Benchmark]: RCFGBuilder took 203.37ms. Allocated memory is still 134.2MB. Free memory was 90.8MB in the beginning and 80.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 02:44:54,443 INFO L158 Benchmark]: TraceAbstraction took 9694.86ms. Allocated memory was 134.2MB in the beginning and 268.4MB in the end (delta: 134.2MB). Free memory was 79.4MB in the beginning and 234.3MB in the end (delta: -154.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 02:44:54,443 INFO L158 Benchmark]: Witness Printer took 44.78ms. Allocated memory is still 268.4MB. Free memory was 234.3MB in the beginning and 231.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 02:44:54,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 134.2MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.28ms. Allocated memory is still 134.2MB. Free memory was 102.9MB in the beginning and 93.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.35ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 91.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.21ms. Allocated memory is still 134.2MB. Free memory was 91.9MB in the beginning and 90.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 203.37ms. Allocated memory is still 134.2MB. Free memory was 90.8MB in the beginning and 80.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9694.86ms. Allocated memory was 134.2MB in the beginning and 268.4MB in the end (delta: 134.2MB). Free memory was 79.4MB in the beginning and 234.3MB in the end (delta: -154.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.78ms. Allocated memory is still 268.4MB. Free memory was 234.3MB in the beginning and 231.6MB in the end (delta: 2.6MB). 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: 10]: 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, 29 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 11, TraceHistogramMax: 62, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 698 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 23 IncrementalHoareTripleChecker+Unchecked, 494 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 623 IncrementalHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 204 mSDtfsCounter, 623 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1015 GetRequests, 734 SyntacticMatches, 51 SemanticMatches, 230 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1150 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=10, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 1244 NumberOfCodeBlocks, 944 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1476 ConstructedInterpolants, 64 QuantifiedInterpolants, 8455 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1123 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 8127/22828 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-17 02:44:54,456 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