./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8 --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 32bit --witnessprinter.graph.data.programhash 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:54:36,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:54:36,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:54:37,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:54:37,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:54:37,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:54:37,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:54:37,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:54:37,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:54:37,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:54:37,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:54:37,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:54:37,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:54:37,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:54:37,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:54:37,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:54:37,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:54:37,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:54:37,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:54:37,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:54:37,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:54:37,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:54:37,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:54:37,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:54:37,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:54:37,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:54:37,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:54:37,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:54:37,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:54:37,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:54:37,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:54:37,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:54:37,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:54:37,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:54:37,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:54:37,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:54:37,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:54:37,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:54:37,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:54:37,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:54:37,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:54:37,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-07 01:54:37,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:54:37,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:54:37,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:54:37,087 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:54:37,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:54:37,088 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:54:37,088 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:54:37,089 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:54:37,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:54:37,090 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:54:37,090 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:54:37,090 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:54:37,091 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:54:37,091 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:54:37,092 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:54:37,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 01:54:37,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 01:54:37,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:54:37,094 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:54:37,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:54:37,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:54:37,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:54:37,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:54:37,096 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 01:54:37,096 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 01:54:37,097 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 01:54:37,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:54:37,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:54:37,098 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:54:37,098 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:54:37,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:54:37,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:54:37,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:54:37,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:54:37,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:54:37,101 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:54:37,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:54:37,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:54:37,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:54:37,102 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_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 [2021-11-07 01:54:37,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:54:37,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:54:37,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:54:37,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:54:37,379 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:54:37,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/memsafety-ext3/scopes2.c [2021-11-07 01:54:37,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/data/eebb6fb55/b89ff0c0388d4f319980e6f75db939d7/FLAG7f25b5590 [2021-11-07 01:54:37,880 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:54:37,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/sv-benchmarks/c/memsafety-ext3/scopes2.c [2021-11-07 01:54:37,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/data/eebb6fb55/b89ff0c0388d4f319980e6f75db939d7/FLAG7f25b5590 [2021-11-07 01:54:38,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/data/eebb6fb55/b89ff0c0388d4f319980e6f75db939d7 [2021-11-07 01:54:38,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:54:38,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:54:38,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:54:38,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:54:38,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:54:38,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68aa6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38, skipping insertion in model container [2021-11-07 01:54:38,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:54:38,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:54:38,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:54:38,510 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:54:38,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:54:38,539 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:54:38,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38 WrapperNode [2021-11-07 01:54:38,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:54:38,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:54:38,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:54:38,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:54:38,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:54:38,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:54:38,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:54:38,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:54:38,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:54:38,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:54:38,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:54:38,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:54:38,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (1/1) ... [2021-11-07 01:54:38,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:54:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:54:38,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:54:38,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:54:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:54:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:54:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:54:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:54:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:54:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:54:39,031 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:54:39,031 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 01:54:39,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:54:39 BoogieIcfgContainer [2021-11-07 01:54:39,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:54:39,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:54:39,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:54:39,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:54:39,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:54:38" (1/3) ... [2021-11-07 01:54:39,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61557136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:54:39, skipping insertion in model container [2021-11-07 01:54:39,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:54:38" (2/3) ... [2021-11-07 01:54:39,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61557136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:54:39, skipping insertion in model container [2021-11-07 01:54:39,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:54:39" (3/3) ... [2021-11-07 01:54:39,057 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes2.c [2021-11-07 01:54:39,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:54:39,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:54:39,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:54:39,119 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:54:39,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:54:39,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 4 states have (on average 2.25) internal successors, (9), 9 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-07 01:54:39,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:39,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1] [2021-11-07 01:54:39,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-11-07 01:54:39,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1778, now seen corresponding path program 1 times [2021-11-07 01:54:39,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:54:39,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271509888] [2021-11-07 01:54:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:39,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:54:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:54:39,267 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:54:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:54:39,339 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:54:39,342 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:54:39,352 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-07 01:54:39,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-07 01:54:39,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-11-07 01:54:39,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-11-07 01:54:39,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 01:54:39,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:54:39,360 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:54:39,364 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:54:39,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:54:39 BoogieIcfgContainer [2021-11-07 01:54:39,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:54:39,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:54:39,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:54:39,396 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:54:39,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:54:39" (3/4) ... [2021-11-07 01:54:39,399 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:54:39,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:54:39,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:54:39,453 INFO L168 Benchmark]: Toolchain (without parser) took 1168.99 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 52.5 MB in the beginning and 89.1 MB in the end (delta: -36.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:54:39,454 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 92.3 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:54:39,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.75 ms. Allocated memory is still 92.3 MB. Free memory was 52.3 MB in the beginning and 64.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:54:39,457 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.55 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 62.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:54:39,463 INFO L168 Benchmark]: Boogie Preprocessor took 19.85 ms. Allocated memory is still 92.3 MB. Free memory was 62.9 MB in the beginning and 61.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:54:39,463 INFO L168 Benchmark]: RCFGBuilder took 439.68 ms. Allocated memory is still 92.3 MB. Free memory was 61.8 MB in the beginning and 48.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:54:39,464 INFO L168 Benchmark]: TraceAbstraction took 354.61 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 48.3 MB in the beginning and 91.1 MB in the end (delta: -42.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:54:39,465 INFO L168 Benchmark]: Witness Printer took 55.29 ms. Allocated memory is still 115.3 MB. Free memory was 91.1 MB in the beginning and 89.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:54:39,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 92.3 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.75 ms. Allocated memory is still 92.3 MB. Free memory was 52.3 MB in the beginning and 64.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.55 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 62.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.85 ms. Allocated memory is still 92.3 MB. Free memory was 62.9 MB in the beginning and 61.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 439.68 ms. Allocated memory is still 92.3 MB. Free memory was 61.8 MB in the beginning and 48.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 354.61 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 48.3 MB in the beginning and 91.1 MB in the end (delta: -42.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * Witness Printer took 55.29 ms. Allocated memory is still 115.3 MB. Free memory was 91.1 MB in the beginning and 89.1 MB in the end (delta: 2.0 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND FALSE !(__VERIFIER_nondet_int()) [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB [L18] \read(*myPointerA) - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 4]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:54:39,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b4cd2be-c534-4741-b981-f16d58f0a775/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)