./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loops/invert_string-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg --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 e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 ............................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-28 08:39:35,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:39:35,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:39:35,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:39:35,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:39:35,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:39:35,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:39:35,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:39:35,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:39:35,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:39:35,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:39:35,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:39:35,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:39:35,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:39:35,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:39:35,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:39:35,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:39:35,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:39:35,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:39:35,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:39:35,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:39:35,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:39:35,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:39:35,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:39:35,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:39:35,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:39:35,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:39:35,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:39:35,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:39:35,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:39:35,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:39:35,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:39:35,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:39:35,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:39:35,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:39:35,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:39:35,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:39:35,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:39:35,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:39:35,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:39:35,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:39:35,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 08:39:35,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:39:35,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:39:35,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:39:35,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:39:35,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:39:35,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:39:35,598 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:39:35,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:39:35,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:39:35,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:39:35,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:39:35,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:39:35,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:39:35,600 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:39:35,600 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:39:35,600 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 08:39:35,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:39:35,600 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:39:35,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:39:35,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:39:35,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:39:35,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:39:35,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:39:35,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:39:35,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:39:35,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:39:35,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:39:35,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:39:35,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:39:35,603 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_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 [2021-10-28 08:39:35,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:39:35,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:39:35,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:39:35,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:39:35,885 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:39:35,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loops/invert_string-2.c [2021-10-28 08:39:35,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/data/c4818e140/989f58c13b69468da8da1bf0f3bc04fe/FLAG63c3d5553 [2021-10-28 08:39:36,400 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:39:36,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/sv-benchmarks/c/loops/invert_string-2.c [2021-10-28 08:39:36,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/data/c4818e140/989f58c13b69468da8da1bf0f3bc04fe/FLAG63c3d5553 [2021-10-28 08:39:36,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/data/c4818e140/989f58c13b69468da8da1bf0f3bc04fe [2021-10-28 08:39:36,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:39:36,795 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:39:36,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:36,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:39:36,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:39:36,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:36" (1/1) ... [2021-10-28 08:39:36,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6ee7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:36, skipping insertion in model container [2021-10-28 08:39:36,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:39:36" (1/1) ... [2021-10-28 08:39:36,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:39:36,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:39:36,977 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-10-28 08:39:37,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:37,017 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:39:37,029 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-10-28 08:39:37,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:39:37,049 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:39:37,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37 WrapperNode [2021-10-28 08:39:37,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:39:37,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:39:37,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:39:37,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:39:37,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:39:37,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:39:37,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:39:37,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:39:37,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (1/1) ... [2021-10-28 08:39:37,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:39:37,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:39:37,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:39:37,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:39:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:39:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:39:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:39:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-28 08:39:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:39:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:39:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:39:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:39:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:39:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-28 08:39:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-28 08:39:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-10-28 08:39:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:39:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:39:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:39:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:39:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:39:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:39:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:39:37,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:39:37,430 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 08:39:37,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:37 BoogieIcfgContainer [2021-10-28 08:39:37,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:39:37,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:39:37,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:39:37,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:39:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:39:36" (1/3) ... [2021-10-28 08:39:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcfa9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:37, skipping insertion in model container [2021-10-28 08:39:37,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:39:37" (2/3) ... [2021-10-28 08:39:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcfa9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:39:37, skipping insertion in model container [2021-10-28 08:39:37,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:37" (3/3) ... [2021-10-28 08:39:37,440 INFO L111 eAbstractionObserver]: Analyzing ICFG invert_string-2.c [2021-10-28 08:39:37,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:39:37,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-28 08:39:37,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:39:37,494 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 [2021-10-28 08:39:37,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-10-28 08:39:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 41 states have internal predecessors, (48), 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) [2021-10-28 08:39:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:39:37,517 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:37,517 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:37,518 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 9 more)] === [2021-10-28 08:39:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1605601811, now seen corresponding path program 1 times [2021-10-28 08:39:37,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:37,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311194318] [2021-10-28 08:39:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:37,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:39:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:37,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:37,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311194318] [2021-10-28 08:39:37,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311194318] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:37,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:37,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:39:37,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442989809] [2021-10-28 08:39:37,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:39:37,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:37,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:39:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:39:37,957 INFO L87 Difference]: Start difference. First operand has 48 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 41 states have internal predecessors, (48), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:38,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:38,052 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2021-10-28 08:39:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:39:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 08:39:38,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:38,061 INFO L225 Difference]: With dead ends: 48 [2021-10-28 08:39:38,061 INFO L226 Difference]: Without dead ends: 45 [2021-10-28 08:39:38,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:39:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-28 08:39:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-28 08:39:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 39 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:39:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-10-28 08:39:38,093 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 8 [2021-10-28 08:39:38,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:38,094 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-10-28 08:39:38,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:38,094 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-10-28 08:39:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:39:38,095 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:38,095 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:38,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:39:38,096 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 9 more)] === [2021-10-28 08:39:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1605602121, now seen corresponding path program 1 times [2021-10-28 08:39:38,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:38,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395888780] [2021-10-28 08:39:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:38,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:38,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:39:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:39:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:39:38,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:39:38,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395888780] [2021-10-28 08:39:38,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395888780] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:39:38,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:39:38,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:39:38,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127446556] [2021-10-28 08:39:38,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:39:38,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:39:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:39:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:39:38,201 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:39:38,296 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-10-28 08:39:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:39:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-10-28 08:39:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:39:38,299 INFO L225 Difference]: With dead ends: 41 [2021-10-28 08:39:38,299 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 08:39:38,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:39:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 08:39:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 08:39:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:39:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-10-28 08:39:38,305 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 8 [2021-10-28 08:39:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:39:38,305 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-10-28 08:39:38,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:39:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-10-28 08:39:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:39:38,306 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:39:38,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:39:38,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:39:38,307 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 9 more)] === [2021-10-28 08:39:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:39:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1605602120, now seen corresponding path program 1 times [2021-10-28 08:39:38,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:39:38,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036594191] [2021-10-28 08:39:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:39:38,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:39:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:38,375 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:39:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:39:38,443 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:39:38,444 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:39:38,445 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:39:38,446 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:39:38,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:39:38,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:39:38,447 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:39:38,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:39:38,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 08:39:38,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 08:39:38,448 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 08:39:38,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 08:39:38,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 08:39:38,449 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 08:39:38,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:39:38,450 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:39:38,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:39:38,453 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 08:39:38,456 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:39:38,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:39:38 BoogieIcfgContainer [2021-10-28 08:39:38,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:39:38,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:39:38,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:39:38,474 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:39:38,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:39:37" (3/4) ... [2021-10-28 08:39:38,476 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:39:38,525 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5636234c-ac90-471b-a571-74d9888c5dec/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:39:38,525 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:39:38,527 INFO L168 Benchmark]: Toolchain (without parser) took 1731.78 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 41.4 MB in the beginning and 68.0 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:39:38,528 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:39:38,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.98 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 41.1 MB in the beginning and 73.2 MB in the end (delta: -32.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:38,530 INFO L168 Benchmark]: Boogie Preprocessor took 34.76 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:38,530 INFO L168 Benchmark]: RCFGBuilder took 345.76 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 59.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:38,530 INFO L168 Benchmark]: TraceAbstraction took 1039.37 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 69.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:38,531 INFO L168 Benchmark]: Witness Printer took 51.27 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 68.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:39:38,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.98 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 41.1 MB in the beginning and 73.2 MB in the end (delta: -32.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.76 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 71.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 345.76 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 59.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1039.37 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 69.7 MB in the end (delta: -11.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 51.27 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 68.0 MB in the end (delta: 1.7 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: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] int MAX = __VERIFIER_nondet_uint(); [L16] char str1[MAX], str2[MAX]; [L17] int cont, i, j; [L18] cont = 0 [L20] i=0 VAL [cont=0, i=0, MAX=-1, str1={7:0}, str2={3:0}] [L20] COND FALSE !(i