./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI --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 87b189dc1f4e4e7b15d899fcbb97cc91a55d1376 .................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 02:20:25,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:25,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:25,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:25,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:25,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:25,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:25,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:25,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:25,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:25,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:25,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:25,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:25,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:25,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:25,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:25,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:25,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:25,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:25,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:25,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:25,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:25,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:25,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:25,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:25,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:25,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:25,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:25,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:25,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:25,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:25,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:25,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:25,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:25,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:25,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:25,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:25,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:25,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:25,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:25,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:25,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:20:25,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:25,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:25,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:25,345 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:25,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:25,352 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:25,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:25,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:25,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:25,353 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:25,355 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:25,355 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:25,355 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:25,356 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:25,356 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:25,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:20:25,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:20:25,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:25,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:25,358 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:20:25,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:25,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:25,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:25,359 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:20:25,359 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:20:25,360 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:20:25,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:25,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:25,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:25,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:25,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:25,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:25,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:25,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:25,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:25,365 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:25,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:25,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:25,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:25,366 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_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87b189dc1f4e4e7b15d899fcbb97cc91a55d1376 [2021-10-11 02:20:25,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:25,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:25,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:25,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:25,755 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:25,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loops/invert_string-2.c [2021-10-11 02:20:25,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/data/0153637a0/b7f7c4ff9fc74b9da5d2f3bd52efba16/FLAG21cb1a5e6 [2021-10-11 02:20:26,440 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:26,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/sv-benchmarks/c/loops/invert_string-2.c [2021-10-11 02:20:26,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/data/0153637a0/b7f7c4ff9fc74b9da5d2f3bd52efba16/FLAG21cb1a5e6 [2021-10-11 02:20:26,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/data/0153637a0/b7f7c4ff9fc74b9da5d2f3bd52efba16 [2021-10-11 02:20:26,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:26,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:26,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:26,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:26,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:26,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:26" (1/1) ... [2021-10-11 02:20:26,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fb67f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:26, skipping insertion in model container [2021-10-11 02:20:26,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:26" (1/1) ... [2021-10-11 02:20:26,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:26,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:27,075 WARN L226 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_315de6d4-c322-472d-85e5-ed45692a29ed/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-10-11 02:20:27,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:27,106 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:27,120 WARN L226 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_315de6d4-c322-472d-85e5-ed45692a29ed/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-10-11 02:20:27,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:27,148 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:27,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27 WrapperNode [2021-10-11 02:20:27,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:27,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:27,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:27,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:27,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:27,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:27,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:27,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:27,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... [2021-10-11 02:20:27,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:27,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:27,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:27,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:27,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:27,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:20:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:27,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:20:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:20:27,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:27,807 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-11 02:20:27,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:27 BoogieIcfgContainer [2021-10-11 02:20:27,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:27,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:27,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:27,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:27,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:26" (1/3) ... [2021-10-11 02:20:27,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8728f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:27, skipping insertion in model container [2021-10-11 02:20:27,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:27" (2/3) ... [2021-10-11 02:20:27,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8728f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:27, skipping insertion in model container [2021-10-11 02:20:27,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:27" (3/3) ... [2021-10-11 02:20:27,820 INFO L111 eAbstractionObserver]: Analyzing ICFG invert_string-2.c [2021-10-11 02:20:27,836 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:27,842 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2021-10-11 02:20:27,855 INFO L253 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-10-11 02:20:27,894 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:27,895 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:20:27,895 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:27,895 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:27,895 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:27,895 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:27,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:27,896 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:27,908 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-10-11 02:20:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:20:27,913 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:27,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:20:27,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:20:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 107954, now seen corresponding path program 1 times [2021-10-11 02:20:27,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:27,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205764425] [2021-10-11 02:20:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:28,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205764425] [2021-10-11 02:20:28,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:28,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:20:28,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091189352] [2021-10-11 02:20:28,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:28,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:28,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:28,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:28,262 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2021-10-11 02:20:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:28,358 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-11 02:20:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:28,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:20:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:28,381 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:20:28,391 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:20:28,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:20:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-11 02:20:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 02:20:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-11 02:20:28,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 3 [2021-10-11 02:20:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:28,435 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-11 02:20:28,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-10-11 02:20:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:20:28,437 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:28,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:20:28,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:28,438 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:20:28,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:28,441 INFO L82 PathProgramCache]: Analyzing trace with hash 107955, now seen corresponding path program 1 times [2021-10-11 02:20:28,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:28,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351469207] [2021-10-11 02:20:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:28,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351469207] [2021-10-11 02:20:28,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:28,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:28,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459909835] [2021-10-11 02:20:28,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:20:28,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:28,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:20:28,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:20:28,645 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2021-10-11 02:20:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:28,788 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-11 02:20:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:20:28,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2021-10-11 02:20:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:28,791 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:20:28,792 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:20:28,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:28,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:20:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-10-11 02:20:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:20:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-10-11 02:20:28,804 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 3 [2021-10-11 02:20:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:28,805 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-10-11 02:20:28,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:20:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-10-11 02:20:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:20:28,807 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:28,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:20:28,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:28,811 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:20:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:28,817 INFO L82 PathProgramCache]: Analyzing trace with hash 110444, now seen corresponding path program 1 times [2021-10-11 02:20:28,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:28,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287683128] [2021-10-11 02:20:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:28,869 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:28,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:28,961 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:20:28,962 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:20:28,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:28,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:28 BoogieIcfgContainer [2021-10-11 02:20:28,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:28,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:28,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:28,996 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:28,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:27" (3/4) ... [2021-10-11 02:20:28,999 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:20:29,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315de6d4-c322-472d-85e5-ed45692a29ed/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:29,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:29,060 INFO L168 Benchmark]: Toolchain (without parser) took 2268.77 ms. Allocated memory is still 125.8 MB. Free memory was 93.7 MB in the beginning and 69.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:29,061 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:29,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.13 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 102.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:29,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.52 ms. Allocated memory is still 125.8 MB. Free memory was 102.2 MB in the beginning and 100.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:29,065 INFO L168 Benchmark]: Boogie Preprocessor took 30.86 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 99.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:29,069 INFO L168 Benchmark]: RCFGBuilder took 584.25 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 73.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:29,070 INFO L168 Benchmark]: TraceAbstraction took 1181.77 ms. Allocated memory is still 125.8 MB. Free memory was 73.2 MB in the beginning and 70.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:29,071 INFO L168 Benchmark]: Witness Printer took 62.93 ms. Allocated memory is still 125.8 MB. Free memory was 70.9 MB in the beginning and 69.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:29,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.13 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 102.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.52 ms. Allocated memory is still 125.8 MB. Free memory was 102.2 MB in the beginning and 100.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.86 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 99.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 584.25 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 73.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1181.77 ms. Allocated memory is still 125.8 MB. Free memory was 73.2 MB in the beginning and 70.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Witness Printer took 62.93 ms. Allocated memory is still 125.8 MB. Free memory was 70.9 MB in the beginning and 69.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 [L20] COND FALSE !(i