./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G --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 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:32:48,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:32:48,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:32:48,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:32:48,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:32:48,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:32:48,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:32:48,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:32:48,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:32:48,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:32:48,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:32:48,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:32:48,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:32:48,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:32:48,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:32:48,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:32:48,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:32:48,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:32:48,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:32:48,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:32:48,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:32:48,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:32:48,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:32:48,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:32:48,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:32:48,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:32:48,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:32:48,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:32:48,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:32:48,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:32:48,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:32:48,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:32:48,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:32:48,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:32:48,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:32:48,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:32:48,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:32:48,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:32:48,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:32:48,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:32:48,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:32:48,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-11-23 12:32:48,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:32:48,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:32:48,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:32:48,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:32:48,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:32:48,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:32:48,688 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:32:48,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:32:48,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:32:48,689 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:32:48,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:32:48,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:32:48,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:32:48,691 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:32:48,692 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:32:48,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:32:48,692 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:32:48,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:32:48,693 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:32:48,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:32:48,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:32:48,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:32:48,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:32:48,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:32:48,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:32:48,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:32:48,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:32:48,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:32:48,696 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3368805c1b8fd734b0faf0a6dc34f33a5f2dfc4632d20a018a29950383fb6a5c [2021-11-23 12:32:49,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:32:49,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:32:49,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:32:49,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:32:49,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:32:49,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/list-properties/splice-1.i [2021-11-23 12:32:49,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/data/1d572cc6f/9e6fdabbd78a438a877118c7c0965e13/FLAGd81bce0cf [2021-11-23 12:32:49,984 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:32:49,985 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/sv-benchmarks/c/list-properties/splice-1.i [2021-11-23 12:32:50,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/data/1d572cc6f/9e6fdabbd78a438a877118c7c0965e13/FLAGd81bce0cf [2021-11-23 12:32:50,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/data/1d572cc6f/9e6fdabbd78a438a877118c7c0965e13 [2021-11-23 12:32:50,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:32:50,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:32:50,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:32:50,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:32:50,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:32:50,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:32:50" (1/1) ... [2021-11-23 12:32:50,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5c79d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:50, skipping insertion in model container [2021-11-23 12:32:50,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:32:50" (1/1) ... [2021-11-23 12:32:50,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:32:50,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:32:50,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2021-11-23 12:32:50,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:32:50,901 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:32:50,966 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2021-11-23 12:32:50,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:32:51,004 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:32:51,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51 WrapperNode [2021-11-23 12:32:51,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:32:51,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:32:51,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:32:51,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:32:51,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,101 INFO L137 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2021-11-23 12:32:51,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:32:51,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:32:51,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:32:51,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:32:51,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:32:51,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:32:51,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:32:51,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:32:51,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:32:51,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:32:51,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:32:51,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:32:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:32:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:32:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:32:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:32:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:32:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:32:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:32:51,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:32:51,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:32:51,450 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:32:51,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:32:51,873 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:32:51,886 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:32:51,887 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 12:32:51,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:51 BoogieIcfgContainer [2021-11-23 12:32:51,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:32:51,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:32:51,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:32:51,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:32:51,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:32:50" (1/3) ... [2021-11-23 12:32:51,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635da4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:32:51, skipping insertion in model container [2021-11-23 12:32:51,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (2/3) ... [2021-11-23 12:32:51,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635da4f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:32:51, skipping insertion in model container [2021-11-23 12:32:51,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:51" (3/3) ... [2021-11-23 12:32:51,903 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2021-11-23 12:32:51,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:32:51,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-23 12:32:51,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:32:51,979 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:32:51,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-23 12:32:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 76 states have internal predecessors, (91), 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) [2021-11-23 12:32:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:32:52,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:52,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:32:52,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-23 12:32:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash 889600296, now seen corresponding path program 1 times [2021-11-23 12:32:52,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:52,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696050591] [2021-11-23 12:32:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:52,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:52,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:52,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696050591] [2021-11-23 12:32:52,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696050591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:52,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:52,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:32:52,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555002846] [2021-11-23 12:32:52,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:52,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:32:52,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:52,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:32:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:32:52,267 INFO L87 Difference]: Start difference. First operand has 77 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 76 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-11-23 12:32:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:52,290 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2021-11-23 12:32:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:32:52,293 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 [2021-11-23 12:32:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:52,304 INFO L225 Difference]: With dead ends: 77 [2021-11-23 12:32:52,304 INFO L226 Difference]: Without dead ends: 73 [2021-11-23 12:32:52,306 INFO L932 BasicCegarLoop]: 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 [2021-11-23 12:32:52,311 INFO L933 BasicCegarLoop]: 86 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, 86 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 [2021-11-23 12:32:52,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:32:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-23 12:32:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-23 12:32:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 72 states have internal predecessors, (80), 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) [2021-11-23 12:32:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2021-11-23 12:32:52,361 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 6 [2021-11-23 12:32:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:52,361 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2021-11-23 12:32:52,362 INFO L471 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) [2021-11-23 12:32:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2021-11-23 12:32:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:32:52,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:52,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:52,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:32:52,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-23 12:32:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1807769742, now seen corresponding path program 1 times [2021-11-23 12:32:52,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:52,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964544138] [2021-11-23 12:32:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:52,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:52,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:52,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964544138] [2021-11-23 12:32:52,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964544138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:52,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:52,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:32:52,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043165267] [2021-11-23 12:32:52,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:52,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:32:52,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:32:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:32:52,533 INFO L87 Difference]: Start difference. First operand 73 states and 80 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) [2021-11-23 12:32:52,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:52,782 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2021-11-23 12:32:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:32:52,785 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 [2021-11-23 12:32:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:52,787 INFO L225 Difference]: With dead ends: 80 [2021-11-23 12:32:52,788 INFO L226 Difference]: Without dead ends: 80 [2021-11-23 12:32:52,788 INFO L932 BasicCegarLoop]: 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 [2021-11-23 12:32:52,791 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 118 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:52,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 48 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:32:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-23 12:32:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2021-11-23 12:32:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.74) internal successors, (87), 73 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:52,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2021-11-23 12:32:52,819 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 7 [2021-11-23 12:32:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:52,820 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2021-11-23 12:32:52,820 INFO L471 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) [2021-11-23 12:32:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2021-11-23 12:32:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 12:32:52,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:52,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:52,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:32:52,822 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-23 12:32:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1807769743, now seen corresponding path program 1 times [2021-11-23 12:32:52,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:52,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082644900] [2021-11-23 12:32:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:52,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:52,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:52,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082644900] [2021-11-23 12:32:52,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082644900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:52,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:52,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:32:52,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137971723] [2021-11-23 12:32:52,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:52,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:32:52,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:52,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:32:52,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:32:52,980 INFO L87 Difference]: Start difference. First operand 74 states and 87 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) [2021-11-23 12:32:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:53,205 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2021-11-23 12:32:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:32:53,206 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 [2021-11-23 12:32:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:53,208 INFO L225 Difference]: With dead ends: 88 [2021-11-23 12:32:53,208 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 12:32:53,209 INFO L932 BasicCegarLoop]: 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 [2021-11-23 12:32:53,211 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 110 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:53,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 64 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:32:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 12:32:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2021-11-23 12:32:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 80 states have internal predecessors, (91), 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) [2021-11-23 12:32:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2021-11-23 12:32:53,225 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 7 [2021-11-23 12:32:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:53,226 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2021-11-23 12:32:53,226 INFO L471 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) [2021-11-23 12:32:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2021-11-23 12:32:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:32:53,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:53,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:53,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:32:53,228 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-23 12:32:53,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:53,230 INFO L85 PathProgramCache]: Analyzing trace with hash 673485446, now seen corresponding path program 1 times [2021-11-23 12:32:53,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:53,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296729628] [2021-11-23 12:32:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:53,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:32:53,254 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:32:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:32:53,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:32:53,325 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:32:53,328 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK (29 of 30 remaining) [2021-11-23 12:32:53,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (28 of 30 remaining) [2021-11-23 12:32:53,331 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (27 of 30 remaining) [2021-11-23 12:32:53,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (26 of 30 remaining) [2021-11-23 12:32:53,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (25 of 30 remaining) [2021-11-23 12:32:53,332 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (24 of 30 remaining) [2021-11-23 12:32:53,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (23 of 30 remaining) [2021-11-23 12:32:53,333 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (22 of 30 remaining) [2021-11-23 12:32:53,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (21 of 30 remaining) [2021-11-23 12:32:53,339 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (20 of 30 remaining) [2021-11-23 12:32:53,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (19 of 30 remaining) [2021-11-23 12:32:53,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (18 of 30 remaining) [2021-11-23 12:32:53,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (17 of 30 remaining) [2021-11-23 12:32:53,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (16 of 30 remaining) [2021-11-23 12:32:53,341 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (15 of 30 remaining) [2021-11-23 12:32:53,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (14 of 30 remaining) [2021-11-23 12:32:53,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (13 of 30 remaining) [2021-11-23 12:32:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (12 of 30 remaining) [2021-11-23 12:32:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (11 of 30 remaining) [2021-11-23 12:32:53,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (10 of 30 remaining) [2021-11-23 12:32:53,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (9 of 30 remaining) [2021-11-23 12:32:53,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (8 of 30 remaining) [2021-11-23 12:32:53,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (7 of 30 remaining) [2021-11-23 12:32:53,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (6 of 30 remaining) [2021-11-23 12:32:53,346 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (5 of 30 remaining) [2021-11-23 12:32:53,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (4 of 30 remaining) [2021-11-23 12:32:53,352 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (3 of 30 remaining) [2021-11-23 12:32:53,353 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (2 of 30 remaining) [2021-11-23 12:32:53,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (1 of 30 remaining) [2021-11-23 12:32:53,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2021-11-23 12:32:53,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:32:53,362 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 12:32:53,367 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:32:53,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:32:53 BoogieIcfgContainer [2021-11-23 12:32:53,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:32:53,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:32:53,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:32:53,418 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:32:53,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:51" (3/4) ... [2021-11-23 12:32:53,421 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 12:32:53,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:32:53,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:32:53,465 INFO L158 Benchmark]: Toolchain (without parser) took 3248.07ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 68.6MB in the beginning and 84.2MB in the end (delta: -15.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-11-23 12:32:53,465 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 111.1MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:32:53,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 787.69ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 77.4MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:32:53,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.20ms. Allocated memory is still 111.1MB. Free memory was 77.4MB in the beginning and 75.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:32:53,467 INFO L158 Benchmark]: Boogie Preprocessor took 75.77ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:32:53,467 INFO L158 Benchmark]: RCFGBuilder took 710.18ms. Allocated memory is still 111.1MB. Free memory was 73.8MB in the beginning and 58.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 12:32:53,468 INFO L158 Benchmark]: TraceAbstraction took 1523.97ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 58.0MB in the beginning and 86.3MB in the end (delta: -28.3MB). Peak memory consumption was 508.2kB. Max. memory is 16.1GB. [2021-11-23 12:32:53,469 INFO L158 Benchmark]: Witness Printer took 46.51ms. Allocated memory is still 138.4MB. Free memory was 86.3MB in the beginning and 84.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:32:53,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 111.1MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 787.69ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 77.4MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.20ms. Allocated memory is still 111.1MB. Free memory was 77.4MB in the beginning and 75.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.77ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 73.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 710.18ms. Allocated memory is still 111.1MB. Free memory was 73.8MB in the beginning and 58.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1523.97ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 58.0MB in the beginning and 86.3MB in the end (delta: -28.3MB). Peak memory consumption was 508.2kB. Max. memory is 16.1GB. * Witness Printer took 46.51ms. Allocated memory is still 138.4MB. Free memory was 86.3MB in the beginning and 84.2MB 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: 531]: 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 l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, flag=1, p={-1:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=3, flag=1, p={-1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={-1:0}, flag=1, p={-1:0}] - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 198 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 150 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 163 mSDtfsCounter, 150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=3, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 12:32:53,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_162d03b7-dfcd-4642-a15b-683ad58182aa/bin/uautomizer-wIGwrQj20G/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)