./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:11:17,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:11:17,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:11:17,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:11:17,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:11:17,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:11:17,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:11:17,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:11:17,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:11:17,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:11:17,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:11:17,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:11:17,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:11:17,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:11:17,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:11:17,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:11:17,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:11:17,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:11:17,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:11:17,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:11:17,434 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:11:17,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:11:17,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:11:17,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:11:17,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:11:17,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:11:17,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:11:17,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:11:17,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:11:17,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:11:17,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:11:17,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:11:17,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:11:17,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:11:17,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:11:17,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:11:17,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:11:17,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:11:17,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:11:17,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:11:17,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:11:17,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:11:17,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 06:11:17,488 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:11:17,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:11:17,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:11:17,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:11:17,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:11:17,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:11:17,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:11:17,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:11:17,494 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:11:17,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:11:17,495 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:11:17,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:11:17,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:11:17,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:11:17,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:11:17,496 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:11:17,497 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:11:17,497 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:11:17,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:11:17,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:11:17,499 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:11:17,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:11:17,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:11:17,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:11:17,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:11:17,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:11:17,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:11:17,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:11:17,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 06:11:17,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 06:11:17,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2022-07-20 06:11:17,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:11:17,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:11:17,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:11:17,810 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:11:17,811 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:11:17,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2022-07-20 06:11:17,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7499fe1cf/86f7f775b1d14dd785c6c99c297bcad6/FLAG2e539b898 [2022-07-20 06:11:18,353 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:11:18,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2022-07-20 06:11:18,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7499fe1cf/86f7f775b1d14dd785c6c99c297bcad6/FLAG2e539b898 [2022-07-20 06:11:18,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7499fe1cf/86f7f775b1d14dd785c6c99c297bcad6 [2022-07-20 06:11:18,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:11:18,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:11:18,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:11:18,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:11:18,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:11:18,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:11:18" (1/1) ... [2022-07-20 06:11:18,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1a4496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:18, skipping insertion in model container [2022-07-20 06:11:18,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:11:18" (1/1) ... [2022-07-20 06:11:18,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:11:18,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:11:19,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2022-07-20 06:11:19,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:11:19,143 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:11:19,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2022-07-20 06:11:19,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:11:19,216 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:11:19,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19 WrapperNode [2022-07-20 06:11:19,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:11:19,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:11:19,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:11:19,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:11:19,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,285 INFO L137 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-07-20 06:11:19,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:11:19,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:11:19,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:11:19,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:11:19,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:11:19,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:11:19,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:11:19,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:11:19,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (1/1) ... [2022-07-20 06:11:19,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:11:19,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:11:19,373 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) [2022-07-20 06:11:19,397 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 [2022-07-20 06:11:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-07-20 06:11:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-07-20 06:11:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 06:11:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 06:11:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 06:11:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 06:11:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 06:11:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 06:11:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 06:11:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:11:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:11:19,537 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:11:19,539 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:11:19,576 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-07-20 06:11:19,777 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:11:19,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:11:19,784 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-20 06:11:19,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:19 BoogieIcfgContainer [2022-07-20 06:11:19,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:11:19,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:11:19,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:11:19,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:11:19,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:11:18" (1/3) ... [2022-07-20 06:11:19,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717212a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:11:19, skipping insertion in model container [2022-07-20 06:11:19,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:19" (2/3) ... [2022-07-20 06:11:19,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717212a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:11:19, skipping insertion in model container [2022-07-20 06:11:19,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:19" (3/3) ... [2022-07-20 06:11:19,800 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2022-07-20 06:11:19,815 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:11:19,816 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-07-20 06:11:19,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:11:19,877 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4936ae5d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4aafe7f1 [2022-07-20 06:11:19,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-07-20 06:11:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 38 states have (on average 2.0) internal successors, (76), 66 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-20 06:11:19,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:19,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:19,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238161, now seen corresponding path program 1 times [2022-07-20 06:11:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535801227] [2022-07-20 06:11:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:20,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535801227] [2022-07-20 06:11:20,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535801227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:20,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:20,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:11:20,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123178751] [2022-07-20 06:11:20,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:11:20,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:11:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:11:20,142 INFO L87 Difference]: Start difference. First operand has 68 states, 38 states have (on average 2.0) internal successors, (76), 66 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-20 06:11:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:20,272 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2022-07-20 06:11:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:11:20,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-20 06:11:20,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:20,280 INFO L225 Difference]: With dead ends: 75 [2022-07-20 06:11:20,281 INFO L226 Difference]: Without dead ends: 68 [2022-07-20 06:11:20,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:11:20,288 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 115 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:20,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 40 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-20 06:11:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2022-07-20 06:11:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.6590909090909092) internal successors, (73), 62 states have internal predecessors, (73), 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) [2022-07-20 06:11:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2022-07-20 06:11:20,320 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 7 [2022-07-20 06:11:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:20,320 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2022-07-20 06:11:20,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-20 06:11:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2022-07-20 06:11:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-20 06:11:20,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:20,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:20,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 06:11:20,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238162, now seen corresponding path program 1 times [2022-07-20 06:11:20,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:20,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238324932] [2022-07-20 06:11:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:20,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:20,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:20,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238324932] [2022-07-20 06:11:20,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238324932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:20,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:20,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:11:20,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84284148] [2022-07-20 06:11:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:20,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:11:20,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:20,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:11:20,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:11:20,390 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-20 06:11:20,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:20,510 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2022-07-20 06:11:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:11:20,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-20 06:11:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:20,512 INFO L225 Difference]: With dead ends: 88 [2022-07-20 06:11:20,512 INFO L226 Difference]: Without dead ends: 88 [2022-07-20 06:11:20,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:11:20,514 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:20,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 45 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-20 06:11:20,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2022-07-20 06:11:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 76 states have internal predecessors, (85), 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) [2022-07-20 06:11:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2022-07-20 06:11:20,523 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 7 [2022-07-20 06:11:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:20,524 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2022-07-20 06:11:20,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-20 06:11:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2022-07-20 06:11:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 06:11:20,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:20,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:20,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 06:11:20,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash -502587362, now seen corresponding path program 1 times [2022-07-20 06:11:20,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:20,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605060061] [2022-07-20 06:11:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:20,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:20,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:20,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605060061] [2022-07-20 06:11:20,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605060061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:20,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:20,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:11:20,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901209299] [2022-07-20 06:11:20,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:20,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:20,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:20,626 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:20,821 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-07-20 06:11:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:20,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-07-20 06:11:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:20,828 INFO L225 Difference]: With dead ends: 116 [2022-07-20 06:11:20,828 INFO L226 Difference]: Without dead ends: 116 [2022-07-20 06:11:20,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:11:20,832 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 76 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:20,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 171 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-20 06:11:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2022-07-20 06:11:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 79 states have internal predecessors, (88), 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) [2022-07-20 06:11:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2022-07-20 06:11:20,840 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 15 [2022-07-20 06:11:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:20,841 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2022-07-20 06:11:20,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:20,841 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2022-07-20 06:11:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 06:11:20,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:20,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:20,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 06:11:20,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash 761251652, now seen corresponding path program 1 times [2022-07-20 06:11:20,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:20,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043549345] [2022-07-20 06:11:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:20,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:20,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:20,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043549345] [2022-07-20 06:11:20,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043549345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:20,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:20,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111092938] [2022-07-20 06:11:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:20,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:20,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:20,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:20,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:20,935 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:21,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:21,097 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2022-07-20 06:11:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:21,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-07-20 06:11:21,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:21,100 INFO L225 Difference]: With dead ends: 105 [2022-07-20 06:11:21,100 INFO L226 Difference]: Without dead ends: 105 [2022-07-20 06:11:21,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:11:21,109 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:21,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 151 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-20 06:11:21,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 83. [2022-07-20 06:11:21,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 82 states have internal predecessors, (94), 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) [2022-07-20 06:11:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2022-07-20 06:11:21,124 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 15 [2022-07-20 06:11:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:21,124 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2022-07-20 06:11:21,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2022-07-20 06:11:21,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 06:11:21,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:21,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:21,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 06:11:21,126 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 761251653, now seen corresponding path program 1 times [2022-07-20 06:11:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:21,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019469948] [2022-07-20 06:11:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:21,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:21,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019469948] [2022-07-20 06:11:21,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019469948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:21,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:21,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:21,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118084229] [2022-07-20 06:11:21,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:21,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:21,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:21,248 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:21,510 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2022-07-20 06:11:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:11:21,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-07-20 06:11:21,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:21,511 INFO L225 Difference]: With dead ends: 106 [2022-07-20 06:11:21,511 INFO L226 Difference]: Without dead ends: 106 [2022-07-20 06:11:21,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-20 06:11:21,512 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 61 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:21,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 186 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:11:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-20 06:11:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2022-07-20 06:11:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 73 states have internal predecessors, (83), 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) [2022-07-20 06:11:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2022-07-20 06:11:21,518 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 15 [2022-07-20 06:11:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:21,518 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2022-07-20 06:11:21,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2022-07-20 06:11:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 06:11:21,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:21,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:21,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 06:11:21,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:21,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:21,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1997748640, now seen corresponding path program 1 times [2022-07-20 06:11:21,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:21,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532554704] [2022-07-20 06:11:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:21,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:21,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532554704] [2022-07-20 06:11:21,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532554704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:21,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:21,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:11:21,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126099895] [2022-07-20 06:11:21,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:21,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:21,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:21,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:21,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:21,607 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:21,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:21,729 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2022-07-20 06:11:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:21,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-20 06:11:21,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:21,731 INFO L225 Difference]: With dead ends: 118 [2022-07-20 06:11:21,732 INFO L226 Difference]: Without dead ends: 118 [2022-07-20 06:11:21,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:11:21,733 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 66 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:21,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 162 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:21,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-20 06:11:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2022-07-20 06:11:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 77 states have internal predecessors, (88), 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) [2022-07-20 06:11:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2022-07-20 06:11:21,739 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 17 [2022-07-20 06:11:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:21,740 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2022-07-20 06:11:21,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2022-07-20 06:11:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 06:11:21,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:21,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:21,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 06:11:21,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1997696085, now seen corresponding path program 1 times [2022-07-20 06:11:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:21,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70092656] [2022-07-20 06:11:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:21,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:21,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:21,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70092656] [2022-07-20 06:11:21,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70092656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:21,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:21,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:11:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003439696] [2022-07-20 06:11:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:21,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:21,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:21,804 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:21,923 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2022-07-20 06:11:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:11:21,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-20 06:11:21,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:21,924 INFO L225 Difference]: With dead ends: 101 [2022-07-20 06:11:21,925 INFO L226 Difference]: Without dead ends: 101 [2022-07-20 06:11:21,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:11:21,926 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 46 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:21,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 152 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-20 06:11:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2022-07-20 06:11:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.380952380952381) internal successors, (87), 77 states have internal predecessors, (87), 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) [2022-07-20 06:11:21,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-07-20 06:11:21,931 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 17 [2022-07-20 06:11:21,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:21,932 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-07-20 06:11:21,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:21,932 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-07-20 06:11:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 06:11:21,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:21,933 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:21,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 06:11:21,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:21,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2001456982, now seen corresponding path program 1 times [2022-07-20 06:11:21,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:21,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385893226] [2022-07-20 06:11:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:21,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:21,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:21,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385893226] [2022-07-20 06:11:21,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385893226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:21,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:21,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145287810] [2022-07-20 06:11:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:21,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:21,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:21,988 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:22,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:22,096 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2022-07-20 06:11:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-20 06:11:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:22,098 INFO L225 Difference]: With dead ends: 84 [2022-07-20 06:11:22,098 INFO L226 Difference]: Without dead ends: 84 [2022-07-20 06:11:22,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:11:22,100 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 80 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:22,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 122 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-07-20 06:11:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2022-07-20 06:11:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 75 states have internal predecessors, (85), 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) [2022-07-20 06:11:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-07-20 06:11:22,111 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 17 [2022-07-20 06:11:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:22,111 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-07-20 06:11:22,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-07-20 06:11:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 06:11:22,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:22,113 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 06:11:22,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:22,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2001456983, now seen corresponding path program 1 times [2022-07-20 06:11:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:22,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795980582] [2022-07-20 06:11:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 06:11:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795980582] [2022-07-20 06:11:22,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795980582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:22,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:22,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115379657] [2022-07-20 06:11:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:22,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 06:11:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:22,195 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:22,378 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2022-07-20 06:11:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:11:22,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-20 06:11:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:22,379 INFO L225 Difference]: With dead ends: 81 [2022-07-20 06:11:22,379 INFO L226 Difference]: Without dead ends: 81 [2022-07-20 06:11:22,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-20 06:11:22,380 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:22,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 147 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:11:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-07-20 06:11:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2022-07-20 06:11:22,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.309090909090909) internal successors, (72), 63 states have internal predecessors, (72), 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) [2022-07-20 06:11:22,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-07-20 06:11:22,384 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 17 [2022-07-20 06:11:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:22,385 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-07-20 06:11:22,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-07-20 06:11:22,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 06:11:22,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:22,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 06:11:22,387 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1800660604, now seen corresponding path program 1 times [2022-07-20 06:11:22,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 06:11:22,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923559250] [2022-07-20 06:11:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:22,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 06:11:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:11:22,401 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 06:11:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:11:22,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-20 06:11:22,427 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 06:11:22,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-07-20 06:11:22,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-07-20 06:11:22,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-07-20 06:11:22,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-07-20 06:11:22,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-07-20 06:11:22,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-07-20 06:11:22,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-07-20 06:11:22,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-07-20 06:11:22,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-07-20 06:11:22,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-07-20 06:11:22,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-07-20 06:11:22,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-07-20 06:11:22,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-07-20 06:11:22,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-07-20 06:11:22,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-07-20 06:11:22,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-07-20 06:11:22,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-07-20 06:11:22,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2022-07-20 06:11:22,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2022-07-20 06:11:22,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2022-07-20 06:11:22,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-07-20 06:11:22,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-07-20 06:11:22,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-07-20 06:11:22,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-07-20 06:11:22,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-07-20 06:11:22,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2022-07-20 06:11:22,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 06:11:22,441 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:22,445 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 06:11:22,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:11:22 BoogieIcfgContainer [2022-07-20 06:11:22,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 06:11:22,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 06:11:22,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 06:11:22,466 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 06:11:22,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:19" (3/4) ... [2022-07-20 06:11:22,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-20 06:11:22,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 06:11:22,470 INFO L158 Benchmark]: Toolchain (without parser) took 3747.32ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 73.2MB in the beginning and 48.5MB in the end (delta: 24.7MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2022-07-20 06:11:22,470 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:11:22,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.68ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 73.0MB in the beginning and 93.7MB in the end (delta: -20.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 06:11:22,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.61ms. Allocated memory is still 127.9MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:11:22,471 INFO L158 Benchmark]: Boogie Preprocessor took 40.94ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 90.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:11:22,472 INFO L158 Benchmark]: RCFGBuilder took 459.17ms. Allocated memory is still 127.9MB. Free memory was 90.3MB in the beginning and 75.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-20 06:11:22,472 INFO L158 Benchmark]: TraceAbstraction took 2676.09ms. Allocated memory is still 127.9MB. Free memory was 74.9MB in the beginning and 48.5MB in the end (delta: 26.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2022-07-20 06:11:22,472 INFO L158 Benchmark]: Witness Printer took 4.16ms. Allocated memory is still 127.9MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:11:22,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.68ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 73.0MB in the beginning and 93.7MB in the end (delta: -20.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.61ms. Allocated memory is still 127.9MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.94ms. Allocated memory is still 127.9MB. Free memory was 92.0MB in the beginning and 90.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.17ms. Allocated memory is still 127.9MB. Free memory was 90.3MB in the beginning and 75.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2676.09ms. Allocated memory is still 127.9MB. Free memory was 74.9MB in the beginning and 48.5MB in the end (delta: 26.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Witness Printer took 4.16ms. Allocated memory is still 127.9MB. Free memory is still 48.5MB. There was no memory consumed. 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, p={-1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 696 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 696 mSDsluCounter, 1176 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 800 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1141 IncrementalHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 376 mSDtfsCounter, 1141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=4, InterpolantAutomatonStates: 58, 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, 9 MinimizatonAttempts, 194 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-20 06:11:22,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:11:24,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:11:24,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:11:24,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:11:24,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:11:24,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:11:24,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:11:24,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:11:24,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:11:24,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:11:24,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:11:24,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:11:24,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:11:24,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:11:24,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:11:24,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:11:24,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:11:24,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:11:24,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:11:24,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:11:24,725 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:11:24,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:11:24,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:11:24,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:11:24,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:11:24,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:11:24,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:11:24,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:11:24,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:11:24,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:11:24,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:11:24,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:11:24,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:11:24,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:11:24,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:11:24,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:11:24,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:11:24,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:11:24,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:11:24,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:11:24,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:11:24,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:11:24,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-20 06:11:24,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:11:24,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:11:24,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:11:24,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:11:24,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:11:24,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:11:24,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:11:24,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:11:24,791 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:11:24,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:11:24,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:11:24,793 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:11:24,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:11:24,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:11:24,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:11:24,794 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:11:24,803 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:11:24,803 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:11:24,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:11:24,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:11:24,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 06:11:24,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 06:11:24,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:11:24,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:11:24,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:11:24,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:11:24,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:11:24,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:11:24,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:11:24,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:11:24,806 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 06:11:24,806 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 06:11:24,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 06:11:24,807 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 657efb2af25c5cc2c0afb2bbf76276caecae7904494acc21657e1ac1176685b7 [2022-07-20 06:11:25,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:11:25,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:11:25,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:11:25,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:11:25,179 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:11:25,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2022-07-20 06:11:25,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb989162/2acd57ddc3864a8d84c2e6f2268a36c5/FLAGa3e465165 [2022-07-20 06:11:25,858 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:11:25,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2022-07-20 06:11:25,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb989162/2acd57ddc3864a8d84c2e6f2268a36c5/FLAGa3e465165 [2022-07-20 06:11:26,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb989162/2acd57ddc3864a8d84c2e6f2268a36c5 [2022-07-20 06:11:26,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:11:26,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:11:26,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:11:26,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:11:26,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:11:26,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460e30ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26, skipping insertion in model container [2022-07-20 06:11:26,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:11:26,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:11:26,534 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2022-07-20 06:11:26,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:11:26,553 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:11:26,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i[23408,23421] [2022-07-20 06:11:26,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:11:26,616 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:11:26,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26 WrapperNode [2022-07-20 06:11:26,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:11:26,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:11:26,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:11:26,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:11:26,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,668 INFO L137 Inliner]: procedures = 127, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-07-20 06:11:26,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:11:26,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:11:26,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:11:26,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:11:26,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:11:26,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:11:26,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:11:26,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:11:26,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (1/1) ... [2022-07-20 06:11:26,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:11:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:11:26,753 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) [2022-07-20 06:11:26,767 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 [2022-07-20 06:11:26,795 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-07-20 06:11:26,796 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-07-20 06:11:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 06:11:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 06:11:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 06:11:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 06:11:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 06:11:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 06:11:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 06:11:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:11:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:11:26,929 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:11:26,931 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:11:27,001 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-07-20 06:11:27,286 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:11:27,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:11:27,292 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-20 06:11:27,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:27 BoogieIcfgContainer [2022-07-20 06:11:27,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:11:27,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:11:27,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:11:27,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:11:27,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:11:26" (1/3) ... [2022-07-20 06:11:27,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1070e79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:11:27, skipping insertion in model container [2022-07-20 06:11:27,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:26" (2/3) ... [2022-07-20 06:11:27,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1070e79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:11:27, skipping insertion in model container [2022-07-20 06:11:27,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:27" (3/3) ... [2022-07-20 06:11:27,302 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2022-07-20 06:11:27,316 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:11:27,316 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-07-20 06:11:27,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:11:27,380 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66b2e715, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6dedfc97 [2022-07-20 06:11:27,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-07-20 06:11:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-20 06:11:27,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:27,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-20 06:11:27,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:27,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516551, now seen corresponding path program 1 times [2022-07-20 06:11:27,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:27,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422938646] [2022-07-20 06:11:27,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:27,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:27,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:27,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:27,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 06:11:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:27,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 06:11:27,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:27,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:11:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:27,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:27,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:27,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422938646] [2022-07-20 06:11:27,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422938646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:27,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:27,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:11:27,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522964479] [2022-07-20 06:11:27,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:27,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:11:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:11:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:11:27,695 INFO L87 Difference]: Start difference. First operand has 66 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 64 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:27,987 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2022-07-20 06:11:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:11:27,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-20 06:11:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:27,997 INFO L225 Difference]: With dead ends: 71 [2022-07-20 06:11:27,997 INFO L226 Difference]: Without dead ends: 64 [2022-07-20 06:11:27,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:11:28,006 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 110 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:28,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 36 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:11:28,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-20 06:11:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2022-07-20 06:11:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.725) internal successors, (69), 58 states have internal predecessors, (69), 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) [2022-07-20 06:11:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-07-20 06:11:28,040 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 6 [2022-07-20 06:11:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:28,040 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-07-20 06:11:28,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-07-20 06:11:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-20 06:11:28,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:28,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-20 06:11:28,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:28,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:28,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516552, now seen corresponding path program 1 times [2022-07-20 06:11:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445652913] [2022-07-20 06:11:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:28,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:28,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:28,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:28,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 06:11:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:28,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 06:11:28,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:28,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:11:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:28,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:28,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:28,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445652913] [2022-07-20 06:11:28,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445652913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:28,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:28,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 06:11:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762264518] [2022-07-20 06:11:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:11:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:11:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:11:28,430 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:28,737 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2022-07-20 06:11:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:11:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-20 06:11:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:28,739 INFO L225 Difference]: With dead ends: 84 [2022-07-20 06:11:28,739 INFO L226 Difference]: Without dead ends: 84 [2022-07-20 06:11:28,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:11:28,740 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 107 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:28,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 41 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:11:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-07-20 06:11:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2022-07-20 06:11:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.5) internal successors, (81), 72 states have internal predecessors, (81), 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) [2022-07-20 06:11:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-07-20 06:11:28,749 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 6 [2022-07-20 06:11:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:28,750 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-07-20 06:11:28,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-07-20 06:11:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 06:11:28,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:28,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:28,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:28,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:28,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 423224549, now seen corresponding path program 1 times [2022-07-20 06:11:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:28,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559062086] [2022-07-20 06:11:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:28,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:28,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:28,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 06:11:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:29,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 06:11:29,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:29,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-20 06:11:29,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-20 06:11:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:29,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:29,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:29,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559062086] [2022-07-20 06:11:29,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559062086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:29,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:29,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:11:29,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383034181] [2022-07-20 06:11:29,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:29,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:29,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:29,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:29,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:29,116 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:29,487 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2022-07-20 06:11:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-20 06:11:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:29,493 INFO L225 Difference]: With dead ends: 112 [2022-07-20 06:11:29,493 INFO L226 Difference]: Without dead ends: 112 [2022-07-20 06:11:29,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:11:29,495 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 76 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:29,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 161 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:11:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-20 06:11:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 76. [2022-07-20 06:11:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 75 states have internal predecessors, (84), 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) [2022-07-20 06:11:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2022-07-20 06:11:29,511 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 13 [2022-07-20 06:11:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:29,512 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2022-07-20 06:11:29,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2022-07-20 06:11:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 06:11:29,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:29,515 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:29,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:29,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:29,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769667, now seen corresponding path program 1 times [2022-07-20 06:11:29,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:29,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792617900] [2022-07-20 06:11:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:29,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:29,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:29,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:29,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 06:11:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:29,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 06:11:29,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:29,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:11:29,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 06:11:29,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-20 06:11:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:29,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:29,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:29,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792617900] [2022-07-20 06:11:29,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792617900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:29,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:29,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849670286] [2022-07-20 06:11:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:29,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:29,881 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:30,319 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2022-07-20 06:11:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:30,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-20 06:11:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:30,321 INFO L225 Difference]: With dead ends: 100 [2022-07-20 06:11:30,322 INFO L226 Difference]: Without dead ends: 100 [2022-07-20 06:11:30,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:11:30,323 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 84 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:30,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 131 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 06:11:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-20 06:11:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2022-07-20 06:11:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 77 states have internal predecessors, (89), 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) [2022-07-20 06:11:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2022-07-20 06:11:30,330 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 13 [2022-07-20 06:11:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:30,330 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2022-07-20 06:11:30,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2022-07-20 06:11:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 06:11:30,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:30,332 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:30,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:30,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:30,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:30,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1327769666, now seen corresponding path program 1 times [2022-07-20 06:11:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:30,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297510080] [2022-07-20 06:11:30,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:30,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:30,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:30,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:30,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 06:11:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:30,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 06:11:30,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:30,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:11:30,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 06:11:30,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 06:11:30,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-20 06:11:30,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-20 06:11:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:30,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:30,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:30,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297510080] [2022-07-20 06:11:30,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297510080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:30,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:30,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43610721] [2022-07-20 06:11:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:30,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:30,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:30,760 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:31,343 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-07-20 06:11:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:11:31,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-20 06:11:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:31,344 INFO L225 Difference]: With dead ends: 101 [2022-07-20 06:11:31,344 INFO L226 Difference]: Without dead ends: 101 [2022-07-20 06:11:31,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-20 06:11:31,346 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 58 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:31,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 166 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 06:11:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-20 06:11:31,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 69. [2022-07-20 06:11:31,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 68 states have internal predecessors, (78), 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) [2022-07-20 06:11:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-07-20 06:11:31,352 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 13 [2022-07-20 06:11:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:31,352 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-07-20 06:11:31,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 06:11:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-07-20 06:11:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 06:11:31,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:31,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:31,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:31,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:31,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 916718725, now seen corresponding path program 1 times [2022-07-20 06:11:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:31,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539132223] [2022-07-20 06:11:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:31,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:31,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:31,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:31,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 06:11:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:31,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 06:11:31,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:31,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:11:31,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 06:11:31,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-20 06:11:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:31,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:31,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:31,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539132223] [2022-07-20 06:11:31,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539132223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:31,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:31,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289483737] [2022-07-20 06:11:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:31,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:31,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:31,726 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-07-20 06:11:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:32,038 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2022-07-20 06:11:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-20 06:11:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:32,040 INFO L225 Difference]: With dead ends: 91 [2022-07-20 06:11:32,040 INFO L226 Difference]: Without dead ends: 91 [2022-07-20 06:11:32,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-20 06:11:32,041 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 77 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:32,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 123 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:11:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-20 06:11:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2022-07-20 06:11:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 66 states have internal predecessors, (76), 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) [2022-07-20 06:11:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2022-07-20 06:11:32,047 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 14 [2022-07-20 06:11:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:32,047 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2022-07-20 06:11:32,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-07-20 06:11:32,047 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2022-07-20 06:11:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 06:11:32,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:32,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:32,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:32,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:32,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash 916718726, now seen corresponding path program 1 times [2022-07-20 06:11:32,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:32,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663988585] [2022-07-20 06:11:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:32,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:32,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:32,251 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:32,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 06:11:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:32,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 06:11:32,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:32,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:11:32,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 06:11:32,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-20 06:11:32,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-20 06:11:32,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-20 06:11:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:32,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:32,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:32,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663988585] [2022-07-20 06:11:32,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663988585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:32,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:32,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 06:11:32,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403346625] [2022-07-20 06:11:32,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:32,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:32,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:32,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:32,411 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-07-20 06:11:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:32,847 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2022-07-20 06:11:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 06:11:32,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-20 06:11:32,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:32,849 INFO L225 Difference]: With dead ends: 88 [2022-07-20 06:11:32,849 INFO L226 Difference]: Without dead ends: 88 [2022-07-20 06:11:32,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-20 06:11:32,850 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 50 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:32,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 154 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 06:11:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-20 06:11:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 56. [2022-07-20 06:11:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 55 states have internal predecessors, (64), 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) [2022-07-20 06:11:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-07-20 06:11:32,864 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 14 [2022-07-20 06:11:32,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:32,864 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-07-20 06:11:32,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-07-20 06:11:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-07-20 06:11:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 06:11:32,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:32,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:32,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:33,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:33,077 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:33,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:33,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1350732505, now seen corresponding path program 1 times [2022-07-20 06:11:33,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:33,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259744305] [2022-07-20 06:11:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:33,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:33,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:33,079 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:33,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 06:11:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:33,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 06:11:33,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:33,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-20 06:11:33,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-20 06:11:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:33,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:33,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:33,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259744305] [2022-07-20 06:11:33,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259744305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:33,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:33,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:11:33,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570516502] [2022-07-20 06:11:33,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:33,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:33,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:33,226 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:33,479 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2022-07-20 06:11:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:11:33,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-07-20 06:11:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:33,480 INFO L225 Difference]: With dead ends: 100 [2022-07-20 06:11:33,480 INFO L226 Difference]: Without dead ends: 100 [2022-07-20 06:11:33,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:11:33,481 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 66 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:33,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 134 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:11:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-07-20 06:11:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 60. [2022-07-20 06:11:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 59 states have internal predecessors, (69), 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) [2022-07-20 06:11:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2022-07-20 06:11:33,487 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 15 [2022-07-20 06:11:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:33,487 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2022-07-20 06:11:33,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2022-07-20 06:11:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 06:11:33,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:33,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:33,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:33,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:33,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:33,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:33,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1350679950, now seen corresponding path program 1 times [2022-07-20 06:11:33,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:33,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516969507] [2022-07-20 06:11:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:33,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:33,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:33,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 06:11:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:11:33,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 06:11:33,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:11:33,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-20 06:11:33,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-20 06:11:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:11:33,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:11:33,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:11:33,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516969507] [2022-07-20 06:11:33,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516969507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:11:33,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:11:33,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 06:11:33,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207462158] [2022-07-20 06:11:33,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:11:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 06:11:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:11:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 06:11:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 06:11:33,817 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:34,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:11:34,082 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2022-07-20 06:11:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 06:11:34,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-07-20 06:11:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:11:34,083 INFO L225 Difference]: With dead ends: 83 [2022-07-20 06:11:34,083 INFO L226 Difference]: Without dead ends: 83 [2022-07-20 06:11:34,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:11:34,084 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 06:11:34,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 124 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 06:11:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-20 06:11:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2022-07-20 06:11:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 59 states have internal predecessors, (68), 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) [2022-07-20 06:11:34,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2022-07-20 06:11:34,087 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 15 [2022-07-20 06:11:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:11:34,088 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2022-07-20 06:11:34,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-07-20 06:11:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2022-07-20 06:11:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 06:11:34,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:11:34,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:34,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:34,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:34,289 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-07-20 06:11:34,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:11:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1076970395, now seen corresponding path program 1 times [2022-07-20 06:11:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:11:34,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309674528] [2022-07-20 06:11:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:11:34,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:11:34,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:11:34,292 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:11:34,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 06:11:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:11:34,352 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 06:11:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:11:34,419 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-20 06:11:34,420 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 06:11:34,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2022-07-20 06:11:34,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2022-07-20 06:11:34,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2022-07-20 06:11:34,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2022-07-20 06:11:34,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2022-07-20 06:11:34,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2022-07-20 06:11:34,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2022-07-20 06:11:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2022-07-20 06:11:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2022-07-20 06:11:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2022-07-20 06:11:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2022-07-20 06:11:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2022-07-20 06:11:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2022-07-20 06:11:34,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2022-07-20 06:11:34,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2022-07-20 06:11:34,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2022-07-20 06:11:34,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2022-07-20 06:11:34,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2022-07-20 06:11:34,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2022-07-20 06:11:34,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 06:11:34,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:11:34,628 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:11:34,631 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 06:11:34,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:11:34 BoogieIcfgContainer [2022-07-20 06:11:34,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 06:11:34,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 06:11:34,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 06:11:34,651 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 06:11:34,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:27" (3/4) ... [2022-07-20 06:11:34,655 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-20 06:11:34,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 06:11:34,655 INFO L158 Benchmark]: Toolchain (without parser) took 8483.15ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 35.8MB in the beginning and 59.6MB in the end (delta: -23.8MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-07-20 06:11:34,656 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 52.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:11:34,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.49ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 34.2MB in the end (delta: 1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-20 06:11:34,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.98ms. Allocated memory is still 58.7MB. Free memory was 34.2MB in the beginning and 32.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:11:34,656 INFO L158 Benchmark]: Boogie Preprocessor took 36.64ms. Allocated memory is still 58.7MB. Free memory was 32.1MB in the beginning and 30.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:11:34,657 INFO L158 Benchmark]: RCFGBuilder took 587.03ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 30.5MB in the beginning and 41.4MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-20 06:11:34,657 INFO L158 Benchmark]: TraceAbstraction took 7353.95ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.0MB in the beginning and 59.6MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:11:34,657 INFO L158 Benchmark]: Witness Printer took 3.95ms. Allocated memory is still 86.0MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:11:34,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 52.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.49ms. Allocated memory is still 58.7MB. Free memory was 35.6MB in the beginning and 34.2MB in the end (delta: 1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.98ms. Allocated memory is still 58.7MB. Free memory was 34.2MB in the beginning and 32.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.64ms. Allocated memory is still 58.7MB. Free memory was 32.1MB in the beginning and 30.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 587.03ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 30.5MB in the beginning and 41.4MB in the end (delta: -10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7353.95ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 41.0MB in the beginning and 59.6MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.95ms. Allocated memory is still 86.0MB. Free memory is still 59.6MB. There was no memory consumed. 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={6:0}] [L534] List t; [L535] List p = a; VAL [a={6:0}, p={6:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={6:0}, p={6:0}] [L551] p = a VAL [a={6:0}, p={6:0}] [L552] EXPR p->h VAL [a={6:0}, p={6:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={6:0}, p={6:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={6:0}, p={6:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={6:0}, p={6:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 67 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 674 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 674 mSDsluCounter, 1070 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 719 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1157 IncrementalHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 351 mSDtfsCounter, 1157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=4, InterpolantAutomatonStates: 58, 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, 9 MinimizatonAttempts, 225 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 44 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-20 06:11:34,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample