./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 19:57:03,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 19:57:03,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 19:57:03,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 19:57:03,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 19:57:03,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 19:57:03,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 19:57:03,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 19:57:03,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 19:57:03,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 19:57:03,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 19:57:03,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 19:57:03,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 19:57:03,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 19:57:03,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 19:57:03,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 19:57:03,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 19:57:03,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 19:57:03,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 19:57:03,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 19:57:03,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 19:57:03,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 19:57:03,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 19:57:03,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 19:57:03,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 19:57:03,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 19:57:03,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 19:57:03,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 19:57:03,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 19:57:03,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 19:57:03,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 19:57:03,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 19:57:03,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 19:57:03,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 19:57:03,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 19:57:03,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 19:57:03,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 19:57:03,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 19:57:03,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 19:57:03,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 19:57:03,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 19:57:03,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-12-14 19:57:03,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 19:57:03,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 19:57:03,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 19:57:03,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 19:57:03,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 19:57:03,262 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 19:57:03,262 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 19:57:03,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 19:57:03,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 19:57:03,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 19:57:03,263 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 19:57:03,263 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 19:57:03,263 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 19:57:03,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 19:57:03,263 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 19:57:03,264 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 19:57:03,264 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 19:57:03,264 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 19:57:03,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 19:57:03,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 19:57:03,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 19:57:03,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 19:57:03,265 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 19:57:03,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 19:57:03,265 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_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 [2022-12-14 19:57:03,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 19:57:03,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 19:57:03,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 19:57:03,466 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 19:57:03,466 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 19:57:03,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/loops/invert_string-2.c [2022-12-14 19:57:06,108 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 19:57:06,263 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 19:57:06,263 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/sv-benchmarks/c/loops/invert_string-2.c [2022-12-14 19:57:06,267 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/data/c624b79ea/d8011fd350d64338bdae5feccd20f1a4/FLAG6bd15f0e8 [2022-12-14 19:57:06,278 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/data/c624b79ea/d8011fd350d64338bdae5feccd20f1a4 [2022-12-14 19:57:06,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 19:57:06,281 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 19:57:06,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 19:57:06,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 19:57:06,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 19:57:06,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186c65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06, skipping insertion in model container [2022-12-14 19:57:06,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 19:57:06,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 19:57:06,399 WARN L237 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_03ef092f-1ca0-4a12-b3eb-543b16139069/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2022-12-14 19:57:06,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 19:57:06,420 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 19:57:06,429 WARN L237 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_03ef092f-1ca0-4a12-b3eb-543b16139069/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2022-12-14 19:57:06,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 19:57:06,443 INFO L208 MainTranslator]: Completed translation [2022-12-14 19:57:06,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06 WrapperNode [2022-12-14 19:57:06,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 19:57:06,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 19:57:06,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 19:57:06,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 19:57:06,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,475 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2022-12-14 19:57:06,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 19:57:06,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 19:57:06,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 19:57:06,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 19:57:06,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,497 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 19:57:06,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 19:57:06,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 19:57:06,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 19:57:06,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 19:57:06,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 19:57:06,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 19:57:06,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 19:57:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 19:57:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 19:57:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 19:57:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 19:57:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 19:57:06,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 19:57:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 19:57:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 19:57:06,639 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 19:57:06,641 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 19:57:06,796 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 19:57:06,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 19:57:06,832 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 19:57:06,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:06 BoogieIcfgContainer [2022-12-14 19:57:06,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 19:57:06,834 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 19:57:06,834 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 19:57:06,843 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 19:57:06,843 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:06" (1/1) ... [2022-12-14 19:57:06,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 19:57:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 19:57:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 29 states and 32 transitions. [2022-12-14 19:57:06,894 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-12-14 19:57:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 19:57:06,896 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 19:57:06,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 19:57:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 19:57:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 19:57:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 19:57:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2022-12-14 19:57:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-12-14 19:57:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 19:57:07,131 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 19:57:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 19:57:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 19:57:07,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 19:57:07,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 19:57:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2022-12-14 19:57:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-12-14 19:57:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 19:57:07,230 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 19:57:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 19:57:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 19:57:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 19:57:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 19:57:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 29 states and 35 transitions. [2022-12-14 19:57:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-12-14 19:57:07,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 19:57:07,677 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 19:57:07,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 19:57:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 19:57:07,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 19:57:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 19:57:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 19:57:07,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 19:57:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 19:57:07,748 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2022-12-14 19:57:07,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 07:57:07 ImpRootNode [2022-12-14 19:57:07,767 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 19:57:07,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 19:57:07,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 19:57:07,768 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 19:57:07,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:57:06" (3/4) ... [2022-12-14 19:57:07,770 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 19:57:07,792 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ef092f-1ca0-4a12-b3eb-543b16139069/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 19:57:07,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 19:57:07,793 INFO L158 Benchmark]: Toolchain (without parser) took 1511.60ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 117.9MB in the beginning and 124.1MB in the end (delta: -6.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-12-14 19:57:07,793 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 98.6MB. Free memory was 46.3MB in the beginning and 46.2MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 19:57:07,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.56ms. Allocated memory is still 151.0MB. Free memory was 117.2MB in the beginning and 107.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 19:57:07,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.62ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 105.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 19:57:07,794 INFO L158 Benchmark]: Boogie Preprocessor took 23.57ms. Allocated memory is still 151.0MB. Free memory was 105.4MB in the beginning and 103.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 19:57:07,795 INFO L158 Benchmark]: RCFGBuilder took 333.06ms. Allocated memory is still 151.0MB. Free memory was 103.9MB in the beginning and 88.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 19:57:07,795 INFO L158 Benchmark]: CodeCheck took 932.52ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 88.6MB in the beginning and 125.2MB in the end (delta: -36.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 19:57:07,795 INFO L158 Benchmark]: Witness Printer took 25.02ms. Allocated memory is still 182.5MB. Free memory was 125.2MB in the beginning and 124.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 19:57:07,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 29 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 6 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: -1]: 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=0, str1={1771:0}, str2={1770:0}] [L20] COND FALSE !(i