./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4ce5b36ec45142454df368b1219eecfd99c0ab690f893f50424ec8a6183a262e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:20:30,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:20:30,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:20:30,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:20:30,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:20:30,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:20:30,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:20:30,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:20:30,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:20:30,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:20:30,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:20:30,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:20:30,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:20:30,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:20:30,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:20:30,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:20:30,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:20:30,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:20:30,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:20:30,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:20:30,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:20:30,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:20:30,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:20:30,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:20:30,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:20:30,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:20:30,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:20:30,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:20:30,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:20:30,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:20:30,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:20:30,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:20:30,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:20:30,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:20:30,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:20:30,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:20:30,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:20:30,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:20:30,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:20:30,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:20:30,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:20:30,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-21 17:20:30,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:20:30,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:20:30,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:20:30,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:20:30,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:20:30,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:20:30,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:20:30,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:20:30,376 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:20:30,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:20:30,378 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:20:30,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:20:30,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:20:30,379 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 17:20:30,379 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 17:20:30,379 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 17:20:30,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:20:30,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:20:30,380 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:20:30,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:20:30,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:20:30,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:20:30,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:30,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:20:30,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:20:30,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:20:30,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:20:30,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce5b36ec45142454df368b1219eecfd99c0ab690f893f50424ec8a6183a262e [2022-11-21 17:20:30,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:20:30,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:20:30,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:20:30,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:20:30,734 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:20:30,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2022-11-21 17:20:33,912 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:20:34,135 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:20:34,136 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2022-11-21 17:20:34,143 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/data/ea9aea604/b5fa99f6a58c47a5a9c180d86c7b5ce5/FLAG155401f8f [2022-11-21 17:20:34,158 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/data/ea9aea604/b5fa99f6a58c47a5a9c180d86c7b5ce5 [2022-11-21 17:20:34,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:20:34,162 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:20:34,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:34,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:20:34,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:20:34,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327a40f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34, skipping insertion in model container [2022-11-21 17:20:34,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:20:34,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:20:34,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:34,418 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:20:34,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:20:34,447 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:20:34,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34 WrapperNode [2022-11-21 17:20:34,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:20:34,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:34,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:20:34,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:20:34,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,481 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-11-21 17:20:34,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:20:34,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:20:34,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:20:34,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:20:34,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,514 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:20:34,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:20:34,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:20:34,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:20:34,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (1/1) ... [2022-11-21 17:20:34,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:20:34,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:20:34,550 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:20:34,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:20:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:20:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:20:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:20:34,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:20:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:20:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:20:34,672 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:20:34,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:20:34,880 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:20:34,886 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:20:34,886 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:20:34,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:34 BoogieIcfgContainer [2022-11-21 17:20:34,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:20:34,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:20:34,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:20:34,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:20:34,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:20:34" (1/3) ... [2022-11-21 17:20:34,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3678b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:34, skipping insertion in model container [2022-11-21 17:20:34,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:20:34" (2/3) ... [2022-11-21 17:20:34,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3678b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:20:34, skipping insertion in model container [2022-11-21 17:20:34,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:34" (3/3) ... [2022-11-21 17:20:34,897 INFO L112 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2022-11-21 17:20:34,937 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:20:34,937 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-21 17:20:35,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:20:35,057 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b6074d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:20:35,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-21 17:20:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:20:35,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:35,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:20:35,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:20:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-21 17:20:35,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:35,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685586940] [2022-11-21 17:20:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:35,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:35,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685586940] [2022-11-21 17:20:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685586940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:35,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:35,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754973618] [2022-11-21 17:20:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:35,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:35,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:35,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:35,402 INFO L87 Difference]: Start difference. First operand has 28 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 27 states have internal predecessors, (29), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:35,449 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-11-21 17:20:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:35,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-21 17:20:35,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:35,459 INFO L225 Difference]: With dead ends: 23 [2022-11-21 17:20:35,459 INFO L226 Difference]: Without dead ends: 21 [2022-11-21 17:20:35,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:35,464 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:35,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-21 17:20:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-21 17:20:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.5) internal successors, (21), 20 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) [2022-11-21 17:20:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-21 17:20:35,495 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 3 [2022-11-21 17:20:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:35,496 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-21 17:20:35,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-21 17:20:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 17:20:35,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:35,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 17:20:35,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:20:35,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:20:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-21 17:20:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:35,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222256785] [2022-11-21 17:20:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:35,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:35,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222256785] [2022-11-21 17:20:35,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222256785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:35,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:35,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:35,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503459850] [2022-11-21 17:20:35,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:35,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:35,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:35,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:35,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:35,626 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:35,661 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-21 17:20:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-21 17:20:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:35,663 INFO L225 Difference]: With dead ends: 16 [2022-11-21 17:20:35,663 INFO L226 Difference]: Without dead ends: 16 [2022-11-21 17:20:35,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:35,665 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:35,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-21 17:20:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-21 17:20:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-21 17:20:35,669 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2022-11-21 17:20:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:35,669 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-21 17:20:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,670 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-21 17:20:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:20:35,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:35,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:35,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:20:35,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:20:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash 59325548, now seen corresponding path program 1 times [2022-11-21 17:20:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:35,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693310187] [2022-11-21 17:20:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:35,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693310187] [2022-11-21 17:20:35,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693310187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:35,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:20:35,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788722408] [2022-11-21 17:20:35,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:20:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:20:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:35,730 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:35,749 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-21 17:20:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:20:35,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-21 17:20:35,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:35,751 INFO L225 Difference]: With dead ends: 15 [2022-11-21 17:20:35,751 INFO L226 Difference]: Without dead ends: 15 [2022-11-21 17:20:35,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:20:35,755 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:35,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-21 17:20:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-21 17:20:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) 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) [2022-11-21 17:20:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-21 17:20:35,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-21 17:20:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:35,766 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-21 17:20:35,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:20:35,767 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-21 17:20:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 17:20:35,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:20:35,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:20:35,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:20:35,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-21 17:20:35,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:20:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1177278863, now seen corresponding path program 1 times [2022-11-21 17:20:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:20:35,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2227307] [2022-11-21 17:20:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:20:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:20:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:20:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:20:35,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:20:35,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2227307] [2022-11-21 17:20:35,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2227307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:20:35,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:20:35,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:20:35,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779736102] [2022-11-21 17:20:35,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:20:35,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:20:35,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:20:35,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:20:35,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:20:35,984 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2022-11-21 17:20:36,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:20:36,012 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-21 17:20:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:20:36,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) Word has length 10 [2022-11-21 17:20:36,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:20:36,013 INFO L225 Difference]: With dead ends: 14 [2022-11-21 17:20:36,013 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 17:20:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:20:36,015 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:20:36,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:20:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 17:20:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 17:20:36,017 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) [2022-11-21 17:20:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 17:20:36,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-21 17:20:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:20:36,018 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:20:36,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2022-11-21 17:20:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 17:20:36,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 17:20:36,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2022-11-21 17:20:36,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-21 17:20:36,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-21 17:20:36,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-21 17:20:36,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-21 17:20:36,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-21 17:20:36,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-21 17:20:36,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-21 17:20:36,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 12 remaining) [2022-11-21 17:20:36,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2022-11-21 17:20:36,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2022-11-21 17:20:36,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2022-11-21 17:20:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:20:36,029 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-21 17:20:36,032 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:20:36,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:20:36 BoogieIcfgContainer [2022-11-21 17:20:36,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:20:36,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:20:36,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:20:36,037 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:20:36,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:20:34" (3/4) ... [2022-11-21 17:20:36,040 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 17:20:36,051 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-21 17:20:36,052 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 17:20:36,052 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 17:20:36,052 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 17:20:36,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:20:36,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:20:36,095 INFO L158 Benchmark]: Toolchain (without parser) took 1932.39ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 73.2MB in the beginning and 116.6MB in the end (delta: -43.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2022-11-21 17:20:36,096 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 107.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:20:36,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.24ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 72.8MB in the beginning and 156.2MB in the end (delta: -83.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-21 17:20:36,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.96ms. Allocated memory is still 188.7MB. Free memory was 156.2MB in the beginning and 155.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:20:36,098 INFO L158 Benchmark]: Boogie Preprocessor took 33.04ms. Allocated memory is still 188.7MB. Free memory was 155.0MB in the beginning and 153.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:20:36,098 INFO L158 Benchmark]: RCFGBuilder took 371.26ms. Allocated memory is still 188.7MB. Free memory was 153.8MB in the beginning and 143.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:20:36,098 INFO L158 Benchmark]: TraceAbstraction took 1144.97ms. Allocated memory is still 188.7MB. Free memory was 142.4MB in the beginning and 119.7MB in the end (delta: 22.7MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-21 17:20:36,099 INFO L158 Benchmark]: Witness Printer took 57.89ms. Allocated memory is still 188.7MB. Free memory was 118.7MB in the beginning and 116.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:20:36,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 107.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.24ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 72.8MB in the beginning and 156.2MB in the end (delta: -83.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.96ms. Allocated memory is still 188.7MB. Free memory was 156.2MB in the beginning and 155.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.04ms. Allocated memory is still 188.7MB. Free memory was 155.0MB in the beginning and 153.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.26ms. Allocated memory is still 188.7MB. Free memory was 153.8MB in the beginning and 143.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1144.97ms. Allocated memory is still 188.7MB. Free memory was 142.4MB in the beginning and 119.7MB in the end (delta: 22.7MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 57.89ms. Allocated memory is still 188.7MB. Free memory was 118.7MB in the beginning and 116.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 19]: 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, 28 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 37 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 17:20:36,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37bd4b8f-1396-4361-991a-f6c34fcaeb0e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE