./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y --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 32bit --witnessprinter.graph.data.programhash f35e4091ba483da9f0b2bb24c6ab92803922823d78b3627798806ae597763363
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:53:49,008 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:53:49,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:53:49,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:53:49,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:53:49,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:53:49,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:53:49,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:53:49,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:53:49,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:53:49,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:53:49,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:53:49,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:53:49,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:53:49,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:53:49,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:53:49,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:53:49,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:53:49,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:53:49,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:53:49,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:53:49,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:53:49,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:53:49,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:53:49,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:53:49,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:53:49,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:53:49,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:53:49,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:53:49,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:53:49,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:53:49,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:53:49,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:53:49,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:53:49,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:53:49,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:53:49,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:53:49,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:53:49,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:53:49,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:53:49,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:53:49,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2021-11-13 18:53:49,203 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:53:49,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:53:49,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:53:49,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:53:49,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:53:49,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:53:49,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:53:49,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:53:49,213 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:53:49,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:53:49,215 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:53:49,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-11-13 18:53:49,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:53:49,216 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:53:49,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:53:49,216 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2021-11-13 18:53:49,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2021-11-13 18:53:49,217 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2021-11-13 18:53:49,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:53:49,217 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-11-13 18:53:49,217 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:53:49,218 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:53:49,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:53:49,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:53:49,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:53:49,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:53:49,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:53:49,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:53:49,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:53:49,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:53:49,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:53:49,222 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_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f35e4091ba483da9f0b2bb24c6ab92803922823d78b3627798806ae597763363
[2021-11-13 18:53:49,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:53:49,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:53:49,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:53:49,511 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:53:49,513 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:53:49,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c
[2021-11-13 18:53:49,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/data/52b95ce9f/b4d232f54d5b4c7b8a6a1a89fbaf13c0/FLAGf603ff025
[2021-11-13 18:53:50,001 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:53:50,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/sv-benchmarks/c/array-memsafety/cstrcat_unsafe.c
[2021-11-13 18:53:50,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/data/52b95ce9f/b4d232f54d5b4c7b8a6a1a89fbaf13c0/FLAGf603ff025
[2021-11-13 18:53:50,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/data/52b95ce9f/b4d232f54d5b4c7b8a6a1a89fbaf13c0
[2021-11-13 18:53:50,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:53:50,403 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2021-11-13 18:53:50,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:53:50,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:53:50,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:53:50,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa7d3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50, skipping insertion in model container
[2021-11-13 18:53:50,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:53:50,432 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:53:50,568 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:53:50,585 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:53:50,602 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:53:50,613 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:53:50,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50 WrapperNode
[2021-11-13 18:53:50,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:53:50,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:53:50,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:53:50,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:53:50,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:53:50,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:53:50,647 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:53:50,647 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:53:50,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (1/1) ...
[2021-11-13 18:53:50,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:53:50,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:53:50,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:53:50,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:53:50,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-11-13 18:53:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:53:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrcat
[2021-11-13 18:53:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-11-13 18:53:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure cstrcat
[2021-11-13 18:53:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 18:53:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 18:53:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-11-13 18:53:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-11-13 18:53:50,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:53:50,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 18:53:51,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:53:51,035 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-11-13 18:53:51,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:53:51 BoogieIcfgContainer
[2021-11-13 18:53:51,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:53:51,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:53:51,056 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:53:51,059 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:53:51,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:53:50" (1/3) ...
[2021-11-13 18:53:51,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a99b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:53:51, skipping insertion in model container
[2021-11-13 18:53:51,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:53:50" (2/3) ...
[2021-11-13 18:53:51,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a99b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:53:51, skipping insertion in model container
[2021-11-13 18:53:51,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:53:51" (3/3) ...
[2021-11-13 18:53:51,064 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrcat_unsafe.c
[2021-11-13 18:53:51,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:53:51,078 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations.
[2021-11-13 18:53:51,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:53:51,146 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
[2021-11-13 18:53:51,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2021-11-13 18:53:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 18:53:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-11-13 18:53:51,197 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:53:51,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:53:51,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting cstrcatErr0REQUIRES_VIOLATION === [cstrcatErr0REQUIRES_VIOLATION, cstrcatErr1REQUIRES_VIOLATION, cstrcatErr2REQUIRES_VIOLATION, cstrcatErr3REQUIRES_VIOLATION (and 3 more)] ===
[2021-11-13 18:53:51,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:53:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash 543632158, now seen corresponding path program 1 times
[2021-11-13 18:53:51,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:53:51,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165018411]
[2021-11-13 18:53:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:53:51,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:53:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:53:51,308 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 18:53:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:53:51,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 18:53:51,358 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 18:53:51,359 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location cstrcatErr0REQUIRES_VIOLATION (6 of 7 remaining)
[2021-11-13 18:53:51,362 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr1REQUIRES_VIOLATION (5 of 7 remaining)
[2021-11-13 18:53:51,363 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr2REQUIRES_VIOLATION (4 of 7 remaining)
[2021-11-13 18:53:51,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr3REQUIRES_VIOLATION (3 of 7 remaining)
[2021-11-13 18:53:51,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr4REQUIRES_VIOLATION (2 of 7 remaining)
[2021-11-13 18:53:51,364 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location cstrcatErr5REQUIRES_VIOLATION (1 of 7 remaining)
[2021-11-13 18:53:51,365 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (0 of 7 remaining)
[2021-11-13 18:53:51,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:53:51,370 INFO L732 BasicCegarLoop]: Path program histogram: [1]
[2021-11-13 18:53:51,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:53:51,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:53:51 BoogieIcfgContainer
[2021-11-13 18:53:51,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:53:51,396 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:53:51,396 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:53:51,397 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:53:51,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:53:51" (3/4) ...
[2021-11-13 18:53:51,399 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2021-11-13 18:53:51,448 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 18:53:51,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:53:51,450 INFO L158 Benchmark]: Toolchain (without parser) took 1046.48ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.1MB in the beginning and 55.5MB in the end (delta: -5.4MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB.
[2021-11-13 18:53:51,451 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 65.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:53:51,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.30ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.9MB in the beginning and 81.6MB in the end (delta: -31.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB.
[2021-11-13 18:53:51,457 INFO L158 Benchmark]: Boogie Preprocessor took 30.52ms. Allocated memory is still 104.9MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:53:51,458 INFO L158 Benchmark]: RCFGBuilder took 393.46ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 70.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:53:51,459 INFO L158 Benchmark]: TraceAbstraction took 351.52ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 57.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-13 18:53:51,459 INFO L158 Benchmark]: Witness Printer took 52.11ms. Allocated memory is still 104.9MB. Free memory was 57.0MB in the beginning and 55.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:53:51,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 65.9MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 208.30ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.9MB in the beginning and 81.6MB in the end (delta: -31.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 30.52ms. Allocated memory is still 104.9MB. Free memory was 81.6MB in the beginning and 80.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 393.46ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 70.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 351.52ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 57.3MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Witness Printer took 52.11ms. Allocated memory is still 104.9MB. Free memory was 57.0MB in the beginning and 55.5MB in the end (delta: 1.5MB). There was no memory consumed. 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
- CounterExampleResult [Line: 5]: pointer dereference may fail
pointer dereference may fail
We found a FailurePath:
[L15] char *s1;
[L16] char *s2;
[L17] CALL cstrcat(s1, s2)
VAL [s1={4:6}, s2={3:5}]
[L3] char *s = s1;
VAL [s={4:6}, s1={4:6}, s1={4:6}, s2={3:5}, s2={3:5}]
[L5] \read(*s)
- UnprovableResult [Line: 5]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 8]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 8]: 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 all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 29 locations, 7 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: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 9 NumberOfCodeBlocks, 9 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!
[2021-11-13 18:53:51,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03ab41e-9be0-474d-9210-22a73f8ecb7e/bin/uautomizer-YU5uOKAj3y/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)