./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 791161d1 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/alternating_list-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:25:49,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:25:49,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:25:49,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:25:49,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:25:49,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:25:49,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:25:49,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:25:49,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:25:49,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:25:49,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:25:49,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:25:49,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:25:49,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:25:49,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:25:49,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:25:49,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:25:49,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:25:49,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:25:49,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:25:49,276 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:25:49,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:25:49,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:25:49,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:25:49,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:25:49,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:25:49,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:25:49,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:25:49,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:25:49,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:25:49,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:25:49,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:25:49,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:25:49,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:25:49,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:25:49,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:25:49,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:25:49,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:25:49,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:25:49,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:25:49,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:25:49,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:25:49,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-07-23 05:25:49,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:25:49,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:25:49,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:25:49,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:25:49,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:25:49,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:25:49,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:25:49,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:25:49,327 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:25:49,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:25:49,329 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:25:49,329 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:25:49,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:25:49,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:25:49,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:25:49,329 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:25:49,330 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:25:49,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:25:49,331 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:25:49,331 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:25:49,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:25:49,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:25:49,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:25:49,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:25:49,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:25:49,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:25:49,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:25:49,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:25:49,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:25:49,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f533383f211897ea0c402e211f6c19321d99a2ee7c27b850c3f29a2cf1ec1863 [2022-07-23 05:25:49,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:25:49,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:25:49,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:25:49,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:25:49,570 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:25:49,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/alternating_list-2.i [2022-07-23 05:25:49,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96ee78098/2d7e5bbc6c864a58a1c4c7403bb45252/FLAGe433d8caf [2022-07-23 05:25:50,077 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:25:50,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-2.i [2022-07-23 05:25:50,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96ee78098/2d7e5bbc6c864a58a1c4c7403bb45252/FLAGe433d8caf [2022-07-23 05:25:50,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96ee78098/2d7e5bbc6c864a58a1c4c7403bb45252 [2022-07-23 05:25:50,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:25:50,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:25:50,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:50,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:25:50,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:25:50,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e61f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50, skipping insertion in model container [2022-07-23 05:25:50,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:25:50,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:25:50,413 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/alternating_list-2.i[23574,23587] [2022-07-23 05:25:50,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:50,421 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:25:50,452 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/alternating_list-2.i[23574,23587] [2022-07-23 05:25:50,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:50,474 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:25:50,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50 WrapperNode [2022-07-23 05:25:50,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:50,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:25:50,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:25:50,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:25:50,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,511 INFO L137 Inliner]: procedures = 124, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 91 [2022-07-23 05:25:50,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:25:50,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:25:50,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:25:50,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:25:50,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:25:50,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:25:50,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:25:50,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:25:50,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (1/1) ... [2022-07-23 05:25:50,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:25:50,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:25:50,563 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) [2022-07-23 05:25:50,570 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 [2022-07-23 05:25:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-07-23 05:25:50,601 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-07-23 05:25:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 05:25:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 05:25:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 05:25:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 05:25:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 05:25:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 05:25:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:25:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 05:25:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:25:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:25:50,676 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:25:50,677 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:25:50,698 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-07-23 05:25:50,856 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:25:50,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:25:50,861 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-23 05:25:50,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:25:50 BoogieIcfgContainer [2022-07-23 05:25:50,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:25:50,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:25:50,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:25:50,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:25:50,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:25:50" (1/3) ... [2022-07-23 05:25:50,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d98c559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:25:50, skipping insertion in model container [2022-07-23 05:25:50,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:50" (2/3) ... [2022-07-23 05:25:50,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d98c559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:25:50, skipping insertion in model container [2022-07-23 05:25:50,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:25:50" (3/3) ... [2022-07-23 05:25:50,869 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2022-07-23 05:25:50,887 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:25:50,898 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-07-23 05:25:50,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:25:50,953 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@678077ac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6861a005 [2022-07-23 05:25:50,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-07-23 05:25:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 74 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 05:25:50,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:50,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 05:25:50,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517576, now seen corresponding path program 1 times [2022-07-23 05:25:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:50,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125195296] [2022-07-23 05:25:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:51,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:51,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125195296] [2022-07-23 05:25:51,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125195296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:51,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:51,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137147372] [2022-07-23 05:25:51,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 05:25:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 05:25:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:25:51,181 INFO L87 Difference]: Start difference. First operand has 76 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 74 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-07-23 05:25:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:51,205 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2022-07-23 05:25:51,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 05:25:51,208 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2022-07-23 05:25:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:51,214 INFO L225 Difference]: With dead ends: 76 [2022-07-23 05:25:51,214 INFO L226 Difference]: Without dead ends: 70 [2022-07-23 05:25:51,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:25:51,219 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:51,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:25:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-23 05:25:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-23 05:25:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 40 states have (on average 1.875) internal successors, (75), 69 states have internal predecessors, (75), 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) [2022-07-23 05:25:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2022-07-23 05:25:51,260 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 6 [2022-07-23 05:25:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:51,260 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2022-07-23 05:25:51,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-07-23 05:25:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2022-07-23 05:25:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 05:25:51,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:51,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 05:25:51,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238131, now seen corresponding path program 1 times [2022-07-23 05:25:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:51,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108493993] [2022-07-23 05:25:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:51,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:51,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108493993] [2022-07-23 05:25:51,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108493993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:51,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:51,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:51,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865527114] [2022-07-23 05:25:51,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:51,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:25:51,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:25:51,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:25:51,372 INFO L87 Difference]: Start difference. First operand 70 states and 75 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) [2022-07-23 05:25:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:51,515 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2022-07-23 05:25:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:25:51,516 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 [2022-07-23 05:25:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:51,517 INFO L225 Difference]: With dead ends: 91 [2022-07-23 05:25:51,517 INFO L226 Difference]: Without dead ends: 91 [2022-07-23 05:25:51,518 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 [2022-07-23 05:25:51,519 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 122 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:51,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 49 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-23 05:25:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2022-07-23 05:25:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 70 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) [2022-07-23 05:25:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-07-23 05:25:51,527 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 7 [2022-07-23 05:25:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:51,527 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-07-23 05:25:51,527 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) [2022-07-23 05:25:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-07-23 05:25:51,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 05:25:51,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:51,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:51,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 05:25:51,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2098238132, now seen corresponding path program 1 times [2022-07-23 05:25:51,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:51,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550438378] [2022-07-23 05:25:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:51,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:51,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550438378] [2022-07-23 05:25:51,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550438378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:51,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:51,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:51,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901731972] [2022-07-23 05:25:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:51,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:25:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:25:51,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:25:51,611 INFO L87 Difference]: Start difference. First operand 71 states and 83 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) [2022-07-23 05:25:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:51,748 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2022-07-23 05:25:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:25:51,748 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 [2022-07-23 05:25:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:51,753 INFO L225 Difference]: With dead ends: 99 [2022-07-23 05:25:51,754 INFO L226 Difference]: Without dead ends: 99 [2022-07-23 05:25:51,755 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 [2022-07-23 05:25:51,769 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 135 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:51,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 61 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-23 05:25:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2022-07-23 05:25:51,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.546875) internal successors, (99), 86 states have internal predecessors, (99), 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) [2022-07-23 05:25:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2022-07-23 05:25:51,775 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 7 [2022-07-23 05:25:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:51,776 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2022-07-23 05:25:51,776 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) [2022-07-23 05:25:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2022-07-23 05:25:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 05:25:51,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:51,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:51,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 05:25:51,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:51,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:51,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1723954815, now seen corresponding path program 1 times [2022-07-23 05:25:51,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:51,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606989957] [2022-07-23 05:25:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:51,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:51,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:51,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606989957] [2022-07-23 05:25:51,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606989957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:51,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:51,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:51,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572151635] [2022-07-23 05:25:51,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:51,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:51,826 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-07-23 05:25:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:51,846 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2022-07-23 05:25:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:51,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2022-07-23 05:25:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:51,847 INFO L225 Difference]: With dead ends: 136 [2022-07-23 05:25:51,848 INFO L226 Difference]: Without dead ends: 136 [2022-07-23 05:25:51,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:51,849 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 51 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:51,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 134 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:25:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-23 05:25:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2022-07-23 05:25:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 95 states have internal predecessors, (112), 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) [2022-07-23 05:25:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 112 transitions. [2022-07-23 05:25:51,860 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 112 transitions. Word has length 14 [2022-07-23 05:25:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:51,861 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 112 transitions. [2022-07-23 05:25:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-07-23 05:25:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 112 transitions. [2022-07-23 05:25:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 05:25:51,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:51,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:51,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 05:25:51,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1723646985, now seen corresponding path program 1 times [2022-07-23 05:25:51,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:51,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643304118] [2022-07-23 05:25:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:51,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:51,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643304118] [2022-07-23 05:25:51,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643304118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:51,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:51,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:25:51,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838831896] [2022-07-23 05:25:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:51,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:25:51,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:25:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:25:51,927 INFO L87 Difference]: Start difference. First operand 96 states and 112 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) 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) [2022-07-23 05:25:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:52,101 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2022-07-23 05:25:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:25:52,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) 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 [2022-07-23 05:25:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:52,102 INFO L225 Difference]: With dead ends: 141 [2022-07-23 05:25:52,102 INFO L226 Difference]: Without dead ends: 141 [2022-07-23 05:25:52,104 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 [2022-07-23 05:25:52,109 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 78 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:52,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 202 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:52,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-23 05:25:52,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2022-07-23 05:25:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.513157894736842) internal successors, (115), 98 states have internal predecessors, (115), 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) [2022-07-23 05:25:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2022-07-23 05:25:52,129 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 14 [2022-07-23 05:25:52,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:52,130 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2022-07-23 05:25:52,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) 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) [2022-07-23 05:25:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2022-07-23 05:25:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 05:25:52,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:52,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:52,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 05:25:52,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:52,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1862079005, now seen corresponding path program 1 times [2022-07-23 05:25:52,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:52,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197792827] [2022-07-23 05:25:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:52,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:52,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197792827] [2022-07-23 05:25:52,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197792827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:52,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:52,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:52,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269810262] [2022-07-23 05:25:52,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:25:52,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:25:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:25:52,183 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2022-07-23 05:25:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:52,253 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2022-07-23 05:25:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:25:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 [2022-07-23 05:25:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:52,254 INFO L225 Difference]: With dead ends: 106 [2022-07-23 05:25:52,254 INFO L226 Difference]: Without dead ends: 106 [2022-07-23 05:25:52,255 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 [2022-07-23 05:25:52,255 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 107 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:52,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-23 05:25:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2022-07-23 05:25:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.5064935064935066) internal successors, (116), 99 states have internal predecessors, (116), 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) [2022-07-23 05:25:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2022-07-23 05:25:52,261 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 15 [2022-07-23 05:25:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:52,262 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2022-07-23 05:25:52,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2022-07-23 05:25:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2022-07-23 05:25:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 05:25:52,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:52,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:52,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 05:25:52,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:52,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1889920183, now seen corresponding path program 1 times [2022-07-23 05:25:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:52,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787377565] [2022-07-23 05:25:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:52,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:52,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:52,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787377565] [2022-07-23 05:25:52,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787377565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:52,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:52,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 05:25:52,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106039283] [2022-07-23 05:25:52,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:52,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:25:52,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:52,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:25:52,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:52,317 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:52,495 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2022-07-23 05:25:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 05:25:52,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-23 05:25:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:52,497 INFO L225 Difference]: With dead ends: 116 [2022-07-23 05:25:52,497 INFO L226 Difference]: Without dead ends: 116 [2022-07-23 05:25:52,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:25:52,498 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 44 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:52,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 242 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-23 05:25:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2022-07-23 05:25:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.4875) internal successors, (119), 102 states have internal predecessors, (119), 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) [2022-07-23 05:25:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2022-07-23 05:25:52,509 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 16 [2022-07-23 05:25:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:52,509 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2022-07-23 05:25:52,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2022-07-23 05:25:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-23 05:25:52,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:52,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:52,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 05:25:52,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:52,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1543433373, now seen corresponding path program 1 times [2022-07-23 05:25:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:52,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140301506] [2022-07-23 05:25:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:52,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:52,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140301506] [2022-07-23 05:25:52,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140301506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:52,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:52,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:25:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217930385] [2022-07-23 05:25:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:52,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:25:52,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:52,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:25:52,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:25:52,603 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2022-07-23 05:25:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:52,702 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2022-07-23 05:25:52,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 05:25:52,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 [2022-07-23 05:25:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:52,703 INFO L225 Difference]: With dead ends: 110 [2022-07-23 05:25:52,704 INFO L226 Difference]: Without dead ends: 99 [2022-07-23 05:25:52,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:52,705 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:52,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 162 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-23 05:25:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-07-23 05:25:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.5) internal successors, (114), 98 states have internal predecessors, (114), 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) [2022-07-23 05:25:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2022-07-23 05:25:52,720 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 17 [2022-07-23 05:25:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:52,720 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2022-07-23 05:25:52,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2022-07-23 05:25:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2022-07-23 05:25:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-23 05:25:52,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:52,721 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:52,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-23 05:25:52,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1088042016, now seen corresponding path program 1 times [2022-07-23 05:25:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:52,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586699868] [2022-07-23 05:25:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:52,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586699868] [2022-07-23 05:25:52,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586699868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:52,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:52,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:25:52,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494560743] [2022-07-23 05:25:52,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:52,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:25:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:25:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:25:52,779 INFO L87 Difference]: Start difference. First operand 99 states and 114 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) [2022-07-23 05:25:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:52,886 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2022-07-23 05:25:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:25:52,887 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 [2022-07-23 05:25:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:52,888 INFO L225 Difference]: With dead ends: 104 [2022-07-23 05:25:52,888 INFO L226 Difference]: Without dead ends: 104 [2022-07-23 05:25:52,888 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 [2022-07-23 05:25:52,892 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 95 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:52,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 123 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-23 05:25:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2022-07-23 05:25:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 95 states have internal predecessors, (111), 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) [2022-07-23 05:25:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-07-23 05:25:52,910 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 17 [2022-07-23 05:25:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:52,910 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-07-23 05:25:52,910 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) [2022-07-23 05:25:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-07-23 05:25:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-23 05:25:52,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:52,912 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:52,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-23 05:25:52,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1088042017, now seen corresponding path program 1 times [2022-07-23 05:25:52,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:52,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268704371] [2022-07-23 05:25:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:52,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:53,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:53,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268704371] [2022-07-23 05:25:53,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268704371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:53,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:53,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:25:53,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031118026] [2022-07-23 05:25:53,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:53,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:25:53,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:25:53,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:25:53,004 INFO L87 Difference]: Start difference. First operand 96 states and 111 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) [2022-07-23 05:25:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:53,155 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2022-07-23 05:25:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 05:25:53,156 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 [2022-07-23 05:25:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:53,156 INFO L225 Difference]: With dead ends: 92 [2022-07-23 05:25:53,157 INFO L226 Difference]: Without dead ends: 92 [2022-07-23 05:25:53,157 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 [2022-07-23 05:25:53,158 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 65 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:53,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 144 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:53,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-07-23 05:25:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2022-07-23 05:25:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 83 states have internal predecessors, (97), 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) [2022-07-23 05:25:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2022-07-23 05:25:53,163 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 17 [2022-07-23 05:25:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:53,163 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2022-07-23 05:25:53,163 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) [2022-07-23 05:25:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2022-07-23 05:25:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-23 05:25:53,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:53,166 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-23 05:25:53,166 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2022-07-23 05:25:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1458314748, now seen corresponding path program 1 times [2022-07-23 05:25:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:53,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612642783] [2022-07-23 05:25:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:53,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 05:25:53,217 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 05:25:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 05:25:53,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 05:25:53,245 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-23 05:25:53,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (29 of 30 remaining) [2022-07-23 05:25:53,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 30 remaining) [2022-07-23 05:25:53,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 30 remaining) [2022-07-23 05:25:53,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2022-07-23 05:25:53,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 30 remaining) [2022-07-23 05:25:53,248 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 30 remaining) [2022-07-23 05:25:53,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2022-07-23 05:25:53,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2022-07-23 05:25:53,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 30 remaining) [2022-07-23 05:25:53,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 30 remaining) [2022-07-23 05:25:53,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2022-07-23 05:25:53,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 30 remaining) [2022-07-23 05:25:53,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 30 remaining) [2022-07-23 05:25:53,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 30 remaining) [2022-07-23 05:25:53,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2022-07-23 05:25:53,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 30 remaining) [2022-07-23 05:25:53,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 30 remaining) [2022-07-23 05:25:53,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 30 remaining) [2022-07-23 05:25:53,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 30 remaining) [2022-07-23 05:25:53,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 30 remaining) [2022-07-23 05:25:53,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 30 remaining) [2022-07-23 05:25:53,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 30 remaining) [2022-07-23 05:25:53,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 30 remaining) [2022-07-23 05:25:53,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (6 of 30 remaining) [2022-07-23 05:25:53,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (5 of 30 remaining) [2022-07-23 05:25:53,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (4 of 30 remaining) [2022-07-23 05:25:53,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (3 of 30 remaining) [2022-07-23 05:25:53,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (2 of 30 remaining) [2022-07-23 05:25:53,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (1 of 30 remaining) [2022-07-23 05:25:53,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2022-07-23 05:25:53,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-23 05:25:53,256 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:53,259 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 05:25:53,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 05:25:53 BoogieIcfgContainer [2022-07-23 05:25:53,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 05:25:53,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 05:25:53,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 05:25:53,281 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 05:25:53,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:25:50" (3/4) ... [2022-07-23 05:25:53,283 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-23 05:25:53,316 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 05:25:53,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 05:25:53,317 INFO L158 Benchmark]: Toolchain (without parser) took 3206.49ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 54.0MB in the beginning and 71.2MB in the end (delta: -17.2MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2022-07-23 05:25:53,317 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 44.4MB in the beginning and 44.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:25:53,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.07ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 53.8MB in the beginning and 73.1MB in the end (delta: -19.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 05:25:53,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.42ms. Allocated memory is still 104.9MB. Free memory was 73.1MB in the beginning and 71.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 05:25:53,318 INFO L158 Benchmark]: Boogie Preprocessor took 22.77ms. Allocated memory is still 104.9MB. Free memory was 71.2MB in the beginning and 69.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 05:25:53,318 INFO L158 Benchmark]: RCFGBuilder took 327.16ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 54.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-23 05:25:53,319 INFO L158 Benchmark]: TraceAbstraction took 2416.10ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 54.2MB in the beginning and 73.3MB in the end (delta: -19.1MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-07-23 05:25:53,319 INFO L158 Benchmark]: Witness Printer took 35.71ms. Allocated memory is still 125.8MB. Free memory was 73.3MB in the beginning and 71.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 05:25:53,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory was 44.4MB in the beginning and 44.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.07ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 53.8MB in the beginning and 73.1MB in the end (delta: -19.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.42ms. Allocated memory is still 104.9MB. Free memory was 73.1MB in the beginning and 71.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.77ms. Allocated memory is still 104.9MB. Free memory was 71.2MB in the beginning and 69.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.16ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 54.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2416.10ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 54.2MB in the beginning and 73.3MB in the end (delta: -19.1MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Witness Printer took 35.71ms. Allocated memory is still 125.8MB. Free memory was 73.3MB in the beginning and 71.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 573]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, p={-1:0}] [L539] p->h = 2 VAL [a={-1:0}, flag=1, p={-1:0}] [L540] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}] [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L547] p->n = t VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L548] EXPR p->n VAL [a={-1:0}, flag=0, p={-1:0}, p->n={-2:0}, t={-2:0}] [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, flag=0, p={-2:0}, t={-2:0}] [L551] p = a [L552] flag = 1 VAL [a={-1:0}, flag=1, p={-1:0}, t={-2:0}] [L553] EXPR p->h VAL [a={-1:0}, flag=1, p={-1:0}, p->h=2, t={-2:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=2, t={-2:0}] [L556] COND TRUE p->h != 1 [L573] reach_error() VAL [a={-1:0}, flag=0, p={-1:0}, t={-2:0}] - 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: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 569]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: 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, 77 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 714 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 714 mSDsluCounter, 1272 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 750 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 879 IncrementalHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 522 mSDtfsCounter, 879 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=7, InterpolantAutomatonStates: 53, 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, 10 MinimizatonAttempts, 149 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-23 05:25:53,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)