./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8 --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 25bb35238109f4fc42bc09877cec45401fedd3ae ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:31:53,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:31:53,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:31:54,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:31:54,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:31:54,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:31:54,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:31:54,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:31:54,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:31:54,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:31:54,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:31:54,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:31:54,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:31:54,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:31:54,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:31:54,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:31:54,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:31:54,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:31:54,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:31:54,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:31:54,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:31:54,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:31:54,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:31:54,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:31:54,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:31:54,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:31:54,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:31:54,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:31:54,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:31:54,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:31:54,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:31:54,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:31:54,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:31:54,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:31:54,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:31:54,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:31:54,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:31:54,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:31:54,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:31:54,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:31:54,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:31:54,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:31:54,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:31:54,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:31:54,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:31:54,170 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:31:54,171 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:31:54,171 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:31:54,171 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:31:54,171 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:31:54,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:31:54,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:31:54,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:31:54,173 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:31:54,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:31:54,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:31:54,174 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:31:54,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:31:54,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:31:54,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:31:54,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:31:54,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:31:54,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:31:54,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:31:54,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:31:54,177 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:31:54,177 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:31:54,177 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:31:54,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:31:54,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:31:54,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:31:54,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:31:54,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:31:54,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:31:54,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:31:54,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:31:54,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:31:54,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:31:54,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:31:54,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:31:54,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:31:54,186 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_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25bb35238109f4fc42bc09877cec45401fedd3ae [2021-10-13 07:31:54,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:31:54,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:31:54,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:31:54,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:31:54,558 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:31:54,559 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-10-13 07:31:54,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/data/978b54fd8/b35b111924ce433e92f122e4345b50f9/FLAG728912956 [2021-10-13 07:31:55,110 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:31:55,110 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/sv-benchmarks/c/array-memsafety/cstrncat_unsafe.c [2021-10-13 07:31:55,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/data/978b54fd8/b35b111924ce433e92f122e4345b50f9/FLAG728912956 [2021-10-13 07:31:55,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/data/978b54fd8/b35b111924ce433e92f122e4345b50f9 [2021-10-13 07:31:55,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:31:55,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:31:55,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:31:55,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:31:55,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:31:55,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a57382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55, skipping insertion in model container [2021-10-13 07:31:55,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:31:55,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:31:55,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:31:55,684 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:31:55,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:31:55,711 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:31:55,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55 WrapperNode [2021-10-13 07:31:55,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:31:55,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:31:55,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:31:55,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:31:55,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:31:55,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:31:55,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:31:55,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:31:55,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:31:55,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:31:55,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:31:55,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:31:55,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (1/1) ... [2021-10-13 07:31:55,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:31:55,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:31:55,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:31:55,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:31:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:31:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:31:55,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:31:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:31:56,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:31:56,202 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-13 07:31:56,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:31:56 BoogieIcfgContainer [2021-10-13 07:31:56,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:31:56,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:31:56,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:31:56,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:31:56,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:31:55" (1/3) ... [2021-10-13 07:31:56,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6669b8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:31:56, skipping insertion in model container [2021-10-13 07:31:56,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:31:55" (2/3) ... [2021-10-13 07:31:56,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6669b8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:31:56, skipping insertion in model container [2021-10-13 07:31:56,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:31:56" (3/3) ... [2021-10-13 07:31:56,212 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe.c [2021-10-13 07:31:56,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:31:56,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-13 07:31:56,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:31:56,266 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:31:56,267 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-13 07:31:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 07:31:56,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:56,286 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 07:31:56,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-10-13 07:31:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:56,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2891, now seen corresponding path program 1 times [2021-10-13 07:31:56,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:31:56,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640020309] [2021-10-13 07:31:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:31:56,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:31:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:31:56,450 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:31:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:31:56,496 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:31:56,504 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:31:56,505 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:31:56,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:31:56,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:31:56,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:31:56,507 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 07:31:56,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 07:31:56,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 07:31:56,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 07:31:56,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 07:31:56,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 07:31:56,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:31:56,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:31:56,516 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:31:56,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:31:56 BoogieIcfgContainer [2021-10-13 07:31:56,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:31:56,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:31:56,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:31:56,531 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:31:56,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:31:56" (3/4) ... [2021-10-13 07:31:56,533 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:31:56,561 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:31:56,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:31:56,564 INFO L168 Benchmark]: Toolchain (without parser) took 1107.35 ms. Allocated memory is still 121.6 MB. Free memory was 98.3 MB in the beginning and 92.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:56,564 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 83.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:31:56,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.69 ms. Allocated memory is still 121.6 MB. Free memory was 98.1 MB in the beginning and 88.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:56,565 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.32 ms. Allocated memory is still 121.6 MB. Free memory was 88.7 MB in the beginning and 87.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:56,566 INFO L168 Benchmark]: Boogie Preprocessor took 42.61 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:31:56,567 INFO L168 Benchmark]: RCFGBuilder took 413.91 ms. Allocated memory is still 121.6 MB. Free memory was 86.2 MB in the beginning and 74.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:56,567 INFO L168 Benchmark]: TraceAbstraction took 324.24 ms. Allocated memory is still 121.6 MB. Free memory was 74.0 MB in the beginning and 94.6 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:31:56,568 INFO L168 Benchmark]: Witness Printer took 31.18 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 92.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:31:56,571 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 83.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.69 ms. Allocated memory is still 121.6 MB. Free memory was 98.1 MB in the beginning and 88.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.32 ms. Allocated memory is still 121.6 MB. Free memory was 88.7 MB in the beginning and 87.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.61 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 86.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 413.91 ms. Allocated memory is still 121.6 MB. Free memory was 86.2 MB in the beginning and 74.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 324.24 ms. Allocated memory is still 121.6 MB. Free memory was 74.0 MB in the beginning and 94.6 MB in the end (delta: -20.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 31.18 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 92.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L24] char *s1; [L25] char *s2; [L26] int n = __VERIFIER_nondet_int(); [L5] char *s = s1; [L7] \read(*s) - UnprovableResult [Line: 7]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 14]: 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: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 23]: 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, 25 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 255.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.1ms SsaConstructionTime, 43.3ms SatisfiabilityAnalysisTime, 0.0ms 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! [2021-10-13 07:31:56,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e8c9cd-6cc4-4d06-abae-37a57f6579b3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...