./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs --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 0.2.1-dev-5709675 [2021-10-16 02:06:11,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:06:11,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:06:11,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:06:11,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:06:11,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:06:11,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:06:11,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:06:11,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:06:11,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:06:11,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:06:11,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:06:11,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:06:11,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:06:11,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:06:11,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:06:11,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:06:11,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:06:11,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:06:11,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:06:11,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:06:11,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:06:11,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:06:11,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:06:11,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:06:11,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:06:11,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:06:11,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:06:11,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:06:11,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:06:11,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:06:11,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:06:11,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:06:11,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:06:11,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:06:11,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:06:11,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:06:11,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:06:11,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:06:11,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:06:11,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:06:11,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-10-16 02:06:11,255 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:06:11,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:06:11,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:06:11,260 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:06:11,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:06:11,260 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:06:11,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:06:11,261 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:06:11,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:06:11,261 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:06:11,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:06:11,262 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:06:11,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:06:11,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:06:11,263 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:06:11,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:06:11,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:06:11,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:06:11,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:06:11,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:06:11,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:06:11,265 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:06:11,266 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:06:11,266 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:06:11,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:06:11,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:06:11,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:06:11,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:06:11,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:06:11,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:06:11,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:06:11,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:06:11,270 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:06:11,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:06:11,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:06:11,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:06:11,270 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_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f34751565a9d43a481fab038d13037e70cdccbf [2021-10-16 02:06:11,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:06:11,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:06:11,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:06:11,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:06:11,654 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:06:11,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-10-16 02:06:11,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/data/5672db915/494686b662824d9ba6535a498167f140/FLAG76cb25a8d [2021-10-16 02:06:12,275 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:06:12,277 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2021-10-16 02:06:12,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/data/5672db915/494686b662824d9ba6535a498167f140/FLAG76cb25a8d [2021-10-16 02:06:12,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/data/5672db915/494686b662824d9ba6535a498167f140 [2021-10-16 02:06:12,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:06:12,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:06:12,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:06:12,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:06:12,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:06:12,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e14c7a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12, skipping insertion in model container [2021-10-16 02:06:12,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:06:12,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:06:12,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:06:12,880 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:06:12,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:06:12,904 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:06:12,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12 WrapperNode [2021-10-16 02:06:12,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:06:12,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:06:12,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:06:12,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:06:12,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:06:12,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:06:12,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:06:12,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:06:12,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:06:12,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:06:12,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:06:12,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:06:12,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (1/1) ... [2021-10-16 02:06:12,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:06:13,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:06:13,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:06:13,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:06:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:06:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:06:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:06:13,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:06:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:06:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:06:13,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:06:13,365 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 02:06:13,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:06:13 BoogieIcfgContainer [2021-10-16 02:06:13,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:06:13,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:06:13,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:06:13,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:06:13,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:06:12" (1/3) ... [2021-10-16 02:06:13,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313c472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:06:13, skipping insertion in model container [2021-10-16 02:06:13,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:06:12" (2/3) ... [2021-10-16 02:06:13,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313c472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:06:13, skipping insertion in model container [2021-10-16 02:06:13,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:06:13" (3/3) ... [2021-10-16 02:06:13,383 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-3.c [2021-10-16 02:06:13,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:06:13,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-16 02:06:13,475 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:06:13,496 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, mConcurrency=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 [2021-10-16 02:06:13,496 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-16 02:06:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-10-16 02:06:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:06:13,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:13,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:06:13,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:06:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:13,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2021-10-16 02:06:13,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:06:13,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419601951] [2021-10-16 02:06:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:13,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:06:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:13,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:06:13,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419601951] [2021-10-16 02:06:13,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419601951] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:13,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:13,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:06:13,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341526987] [2021-10-16 02:06:13,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:06:13,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:06:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:06:13,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:13,761 INFO L87 Difference]: Start difference. First operand has 20 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:06:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:13,837 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-16 02:06:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:06:13,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-16 02:06:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:13,847 INFO L225 Difference]: With dead ends: 16 [2021-10-16 02:06:13,848 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:06:13,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:13,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:06:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:06:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-16 02:06:13,878 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 2 [2021-10-16 02:06:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:13,879 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-16 02:06:13,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:06:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-16 02:06:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-16 02:06:13,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:13,880 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-16 02:06:13,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:06:13,881 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:06:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:13,882 INFO L82 PathProgramCache]: Analyzing trace with hash 2148, now seen corresponding path program 1 times [2021-10-16 02:06:13,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:06:13,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145555518] [2021-10-16 02:06:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:13,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:06:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:13,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:06:13,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145555518] [2021-10-16 02:06:13,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145555518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:13,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:13,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:06:13,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966153628] [2021-10-16 02:06:13,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:06:13,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:06:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:06:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:13,929 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:06:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:13,946 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-16 02:06:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:06:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-16 02:06:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:13,947 INFO L225 Difference]: With dead ends: 11 [2021-10-16 02:06:13,948 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:06:13,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:06:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:06:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-10-16 02:06:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-16 02:06:13,951 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 2 [2021-10-16 02:06:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:13,952 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-16 02:06:13,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-16 02:06:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-16 02:06:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:06:13,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:13,953 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:06:13,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:06:13,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:06:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash 63943883, now seen corresponding path program 1 times [2021-10-16 02:06:13,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:06:13,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020643063] [2021-10-16 02:06:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:13,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:06:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:13,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:06:13,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020643063] [2021-10-16 02:06:13,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020643063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:13,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:13,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:06:13,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717481601] [2021-10-16 02:06:13,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:06:13,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:06:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:06:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:13,986 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-16 02:06:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:13,995 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-16 02:06:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:06:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-16 02:06:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:13,996 INFO L225 Difference]: With dead ends: 10 [2021-10-16 02:06:13,996 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:06:13,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:06:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:06:13,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:06:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-10-16 02:06:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:06:14,000 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-16 02:06:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:14,000 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:06:14,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-16 02:06:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:06:14,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:06:14,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:06:14,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:06:14,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:06:14,002 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 6 more)] === [2021-10-16 02:06:14,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:06:14,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1320531374, now seen corresponding path program 1 times [2021-10-16 02:06:14,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:06:14,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799509843] [2021-10-16 02:06:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:06:14,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:06:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:06:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:06:14,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:06:14,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799509843] [2021-10-16 02:06:14,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799509843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:06:14,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:06:14,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:06:14,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893784674] [2021-10-16 02:06:14,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:06:14,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:06:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:06:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:06:14,126 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-10-16 02:06:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:06:14,155 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-16 02:06:14,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:06:14,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2021-10-16 02:06:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:06:14,156 INFO L225 Difference]: With dead ends: 9 [2021-10-16 02:06:14,156 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:06:14,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:06:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:06:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:06:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:06:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:06:14,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-16 02:06:14,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:06:14,159 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:06:14,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-10-16 02:06:14,160 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:06:14,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:06:14,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-16 02:06:14,163 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-16 02:06:14,164 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-16 02:06:14,164 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-16 02:06:14,164 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-16 02:06:14,165 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-16 02:06:14,165 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:06:14,165 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:06:14,166 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-16 02:06:14,166 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:06:14,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:06:14,172 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:06:14,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:06:14 BoogieIcfgContainer [2021-10-16 02:06:14,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:06:14,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:06:14,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:06:14,176 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:06:14,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:06:13" (3/4) ... [2021-10-16 02:06:14,180 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:06:14,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-16 02:06:14,192 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-16 02:06:14,192 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:06:14,226 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:06:14,227 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:06:14,228 INFO L168 Benchmark]: Toolchain (without parser) took 1568.08 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 56.8 MB in the beginning and 92.9 MB in the end (delta: -36.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:06:14,229 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:06:14,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.95 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 73.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:06:14,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.70 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:06:14,230 INFO L168 Benchmark]: Boogie Preprocessor took 34.49 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 71.0 MB in the end (delta: 808.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:06:14,231 INFO L168 Benchmark]: RCFGBuilder took 387.11 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 60.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:06:14,231 INFO L168 Benchmark]: TraceAbstraction took 804.75 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 60.2 MB in the beginning and 95.4 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:06:14,232 INFO L168 Benchmark]: Witness Printer took 51.20 ms. Allocated memory is still 123.7 MB. Free memory was 95.4 MB in the beginning and 92.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:06:14,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 240.95 ms. Allocated memory is still 98.6 MB. Free memory was 56.5 MB in the beginning and 73.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.70 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 71.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.49 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 71.0 MB in the end (delta: 808.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 387.11 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 60.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 804.75 ms. Allocated memory was 98.6 MB in the beginning and 123.7 MB in the end (delta: 25.2 MB). Free memory was 60.2 MB in the beginning and 95.4 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 51.20 ms. Allocated memory is still 123.7 MB. Free memory was 95.4 MB in the beginning and 92.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference 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: 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: 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: 18]: free always succeeds For all program executions holds that free 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: 18]: free always succeeds For all program executions holds that free 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 699.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.9ms, AutomataDifference: 173.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 31 SDslu, 3 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.4ms SsaConstructionTime, 55.7ms SatisfiabilityAnalysisTime, 207.0ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-16 02:06:14,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5793b8a9-f745-4bc4-81d0-73d998ea6248/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...