./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3f34751565a9d43a481fab038d13037e70cdccbf ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:20,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:20,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:20,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:20,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:20,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:20,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:20,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:20,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:20,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:20,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:20,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:20,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:20,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:20,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:20,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:20,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:20,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:20,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:20,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:20,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:20,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:20,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:20,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:20,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:20,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:20,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:20,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:20,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:20,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:20,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:20,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:20,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:20,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:20,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:20,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:20,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:20,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:20,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:20,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:20,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:20,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-10-11 02:29:20,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:20,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:20,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:20,431 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:20,432 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:20,432 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:20,432 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:20,432 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:20,432 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:20,433 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:20,434 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:20,434 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:20,434 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:20,435 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:20,435 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:20,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:29:20,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:29:20,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:20,436 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:20,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:20,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:20,437 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:29:20,437 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:29:20,438 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:29:20,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:20,438 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:20,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:20,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:20,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:20,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:20,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:20,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:20,440 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:20,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:20,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:20,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:20,441 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f34751565a9d43a481fab038d13037e70cdccbf [2021-10-11 02:29:20,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:20,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:20,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:20,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:20,750 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:20,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-10-11 02:29:20,830 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/data/98db1b002/714c74a66e774f53b1e43db1030debfa/FLAG541d8d81b [2021-10-11 02:29:21,371 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:21,372 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-10-11 02:29:21,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/data/98db1b002/714c74a66e774f53b1e43db1030debfa/FLAG541d8d81b [2021-10-11 02:29:21,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/data/98db1b002/714c74a66e774f53b1e43db1030debfa [2021-10-11 02:29:21,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:21,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:21,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:21,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:21,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:21,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:21,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331a8631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21, skipping insertion in model container [2021-10-11 02:29:21,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:21,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:21,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:21,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:21,963 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:21,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:21,986 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:21,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21 WrapperNode [2021-10-11 02:29:21,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:21,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:21,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:21,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:21,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:22,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:22,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:22,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:22,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... [2021-10-11 02:29:22,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:22,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:22,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:22,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:22,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:29:22,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:29:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:22,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:29:22,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:29:22,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:22,501 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:29:22,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:22 BoogieIcfgContainer [2021-10-11 02:29:22,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:22,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:22,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:22,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:22,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:21" (1/3) ... [2021-10-11 02:29:22,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457203c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:22, skipping insertion in model container [2021-10-11 02:29:22,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:21" (2/3) ... [2021-10-11 02:29:22,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457203c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:22, skipping insertion in model container [2021-10-11 02:29:22,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:22" (3/3) ... [2021-10-11 02:29:22,512 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-3.c [2021-10-11 02:29:22,526 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:22,529 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2021-10-11 02:29:22,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-11 02:29:22,560 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:22,560 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:29:22,560 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:22,560 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:22,560 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:22,561 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:22,561 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:22,561 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-10-11 02:29:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:29:22,580 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:22,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:29:22,581 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:29:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:22,587 INFO L82 PathProgramCache]: Analyzing trace with hash 2085, now seen corresponding path program 1 times [2021-10-11 02:29:22,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:22,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41844492] [2021-10-11 02:29:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:22,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41844492] [2021-10-11 02:29:22,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:22,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:29:22,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642510727] [2021-10-11 02:29:22,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:22,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:22,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:22,763 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2021-10-11 02:29:22,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:22,818 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-11 02:29:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:22,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:29:22,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:22,828 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:29:22,828 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:29:22,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:22,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:29:22,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:29:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:29:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 02:29:22,925 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 2 [2021-10-11 02:29:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:22,926 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 02:29:22,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 02:29:22,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:29:22,927 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:22,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:29:22,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:22,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:29:22,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 1 times [2021-10-11 02:29:22,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:22,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058616647] [2021-10-11 02:29:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:22,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058616647] [2021-10-11 02:29:22,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:22,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:29:22,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529530141] [2021-10-11 02:29:22,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:22,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:22,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:22,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:22,978 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2021-10-11 02:29:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:23,007 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-11 02:29:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:23,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:29:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:23,009 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:29:23,009 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:29:23,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:29:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:29:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:29:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-11 02:29:23,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 2 [2021-10-11 02:29:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:23,019 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-11 02:29:23,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-11 02:29:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:29:23,020 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:23,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:29:23,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:23,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:29:23,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:23,024 INFO L82 PathProgramCache]: Analyzing trace with hash 62096841, now seen corresponding path program 1 times [2021-10-11 02:29:23,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:23,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942486793] [2021-10-11 02:29:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:23,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942486793] [2021-10-11 02:29:23,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:23,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:29:23,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857895585] [2021-10-11 02:29:23,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:23,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:23,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:23,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:23,105 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2021-10-11 02:29:23,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:23,123 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-11 02:29:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:23,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:29:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:23,131 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:29:23,131 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:29:23,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:29:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:29:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:29:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 02:29:23,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-11 02:29:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:23,137 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 02:29:23,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 02:29:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:23,138 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:23,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:23,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:23,139 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:29:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:23,140 INFO L82 PathProgramCache]: Analyzing trace with hash -454475988, now seen corresponding path program 1 times [2021-10-11 02:29:23,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:23,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358497369] [2021-10-11 02:29:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:23,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358497369] [2021-10-11 02:29:23,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:23,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:23,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776515432] [2021-10-11 02:29:23,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:23,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:23,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:23,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:23,255 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2021-10-11 02:29:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:23,297 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:29:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:23,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:29:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:23,297 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:29:23,298 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:23,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:23,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-11 02:29:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:23,300 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:23,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:23,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:23,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:23,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:23 BoogieIcfgContainer [2021-10-11 02:29:23,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:23,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:23,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:23,308 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:23,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:22" (3/4) ... [2021-10-11 02:29:23,312 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:23,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:29:23,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:29:23,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:29:23,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fd1c262-b992-4bdb-a703-2b4e1857bcbe/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:23,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:23,383 INFO L168 Benchmark]: Toolchain (without parser) took 1632.25 ms. Allocated memory is still 90.2 MB. Free memory was 56.2 MB in the beginning and 46.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:23,384 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 65.2 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:23,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.00 ms. Allocated memory is still 90.2 MB. Free memory was 56.0 MB in the beginning and 67.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:23,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.95 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 66.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:23,385 INFO L168 Benchmark]: Boogie Preprocessor took 20.90 ms. Allocated memory is still 90.2 MB. Free memory was 66.0 MB in the beginning and 64.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:23,386 INFO L168 Benchmark]: RCFGBuilder took 461.57 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 50.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:23,386 INFO L168 Benchmark]: TraceAbstraction took 801.63 ms. Allocated memory is still 90.2 MB. Free memory was 49.8 MB in the beginning and 48.9 MB in the end (delta: 893.1 kB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:23,387 INFO L168 Benchmark]: Witness Printer took 74.85 ms. Allocated memory is still 90.2 MB. Free memory was 48.9 MB in the beginning and 46.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:23,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 65.2 MB in the beginning and 65.2 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.00 ms. Allocated memory is still 90.2 MB. Free memory was 56.0 MB in the beginning and 67.2 MB in the end (delta: -11.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.95 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 66.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.90 ms. Allocated memory is still 90.2 MB. Free memory was 66.0 MB in the beginning and 64.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 461.57 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 50.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 801.63 ms. Allocated memory is still 90.2 MB. Free memory was 49.8 MB in the beginning and 48.9 MB in the end (delta: 893.1 kB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. * Witness Printer took 74.85 ms. Allocated memory is still 90.2 MB. Free memory was 48.9 MB in the beginning and 46.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 31 SDslu, 3 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 correct! Received shutdown request...