./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/invert_string-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3da85103e65fd13a584e838d8b961878044a0a70e09ad1788e3ca53a404f357 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 07:15:41,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 07:15:41,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 07:15:41,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 07:15:41,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 07:15:41,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 07:15:41,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 07:15:41,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 07:15:41,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 07:15:41,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 07:15:41,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 07:15:41,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 07:15:41,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 07:15:41,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 07:15:41,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 07:15:41,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 07:15:41,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 07:15:41,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 07:15:41,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 07:15:41,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 07:15:41,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 07:15:41,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 07:15:41,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 07:15:41,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 07:15:41,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 07:15:41,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 07:15:41,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 07:15:41,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 07:15:41,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 07:15:41,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 07:15:41,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 07:15:41,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 07:15:41,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 07:15:41,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 07:15:41,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 07:15:41,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 07:15:41,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 07:15:41,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 07:15:41,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 07:15:41,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 07:15:41,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 07:15:41,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-25 07:15:41,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 07:15:41,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 07:15:41,379 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 07:15:41,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-25 07:15:41,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 07:15:41,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 07:15:41,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 07:15:41,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 07:15:41,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 07:15:41,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 07:15:41,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 07:15:41,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 07:15:41,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 07:15:41,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 07:15:41,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 07:15:41,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 07:15:41,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 07:15:41,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 07:15:41,382 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-25 07:15:41,382 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-25 07:15:41,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 07:15:41,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:15:41,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 07:15:41,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 07:15:41,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 07:15:41,384 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-25 07:15:41,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 07:15:41,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 07:15:41,384 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_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3da85103e65fd13a584e838d8b961878044a0a70e09ad1788e3ca53a404f357 [2021-11-25 07:15:41,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 07:15:41,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 07:15:41,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 07:15:41,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 07:15:41,764 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 07:15:41,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/../../sv-benchmarks/c/loops/invert_string-1.c [2021-11-25 07:15:41,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/data/7e597bc13/c7fb885408f343078dc0c615d2efe5ea/FLAG22010bdc3 [2021-11-25 07:15:42,414 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 07:15:42,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/sv-benchmarks/c/loops/invert_string-1.c [2021-11-25 07:15:42,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/data/7e597bc13/c7fb885408f343078dc0c615d2efe5ea/FLAG22010bdc3 [2021-11-25 07:15:42,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/data/7e597bc13/c7fb885408f343078dc0c615d2efe5ea [2021-11-25 07:15:42,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 07:15:42,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 07:15:42,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 07:15:42,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 07:15:42,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 07:15:42,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:15:42" (1/1) ... [2021-11-25 07:15:42,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf380ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:42, skipping insertion in model container [2021-11-25 07:15:42,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:15:42" (1/1) ... [2021-11-25 07:15:42,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 07:15:42,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 07:15:43,014 WARN L230 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_2f203fed-61f6-4757-8fba-87041b54e647/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2021-11-25 07:15:43,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:15:43,042 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 07:15:43,054 WARN L230 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_2f203fed-61f6-4757-8fba-87041b54e647/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2021-11-25 07:15:43,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:15:43,075 INFO L208 MainTranslator]: Completed translation [2021-11-25 07:15:43,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43 WrapperNode [2021-11-25 07:15:43,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 07:15:43,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 07:15:43,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 07:15:43,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 07:15:43,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,114 INFO L137 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-25 07:15:43,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 07:15:43,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 07:15:43,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 07:15:43,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 07:15:43,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 07:15:43,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 07:15:43,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 07:15:43,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 07:15:43,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:15:43,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/z3 [2021-11-25 07:15:43,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-25 07:15:43,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-25 07:15:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 07:15:43,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 07:15:43,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 07:15:43,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 07:15:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 07:15:43,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 07:15:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 07:15:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 07:15:43,313 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 07:15:43,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 07:15:43,515 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 07:15:43,578 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 07:15:43,591 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 07:15:43,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:15:43 BoogieIcfgContainer [2021-11-25 07:15:43,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 07:15:43,595 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-25 07:15:43,595 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-25 07:15:43,605 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-25 07:15:43,619 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:15:43" (1/1) ... [2021-11-25 07:15:43,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 07:15:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 9 states and 12 transitions. [2021-11-25 07:15:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2021-11-25 07:15:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 07:15:43,734 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:43,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 10 states and 13 transitions. [2021-11-25 07:15:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2021-11-25 07:15:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 07:15:44,071 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:44,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 07:15:44,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 11 states and 14 transitions. [2021-11-25 07:15:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-11-25 07:15:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 07:15:44,300 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:44,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 17 states and 29 transitions. [2021-11-25 07:15:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 29 transitions. [2021-11-25 07:15:45,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 07:15:45,632 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:45,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:46,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 19 states and 33 transitions. [2021-11-25 07:15:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 33 transitions. [2021-11-25 07:15:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 07:15:46,423 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:46,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 20 states and 34 transitions. [2021-11-25 07:15:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 34 transitions. [2021-11-25 07:15:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 07:15:46,820 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:46,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 25 states and 48 transitions. [2021-11-25 07:15:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 48 transitions. [2021-11-25 07:15:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 07:15:48,893 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:48,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 27 states and 55 transitions. [2021-11-25 07:15:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 55 transitions. [2021-11-25 07:15:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 07:15:49,706 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:49,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 28 states and 56 transitions. [2021-11-25 07:15:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 56 transitions. [2021-11-25 07:15:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 07:15:50,090 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:50,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 07:15:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 33 states and 66 transitions. [2021-11-25 07:15:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 66 transitions. [2021-11-25 07:15:51,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 07:15:51,394 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:51,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 30 states and 53 transitions. [2021-11-25 07:15:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 53 transitions. [2021-11-25 07:15:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 07:15:52,062 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:52,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:55,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 35 states and 67 transitions. [2021-11-25 07:15:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 67 transitions. [2021-11-25 07:15:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 07:15:55,119 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:55,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 36 states and 68 transitions. [2021-11-25 07:15:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2021-11-25 07:15:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 07:15:55,689 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:55,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 37 states and 72 transitions. [2021-11-25 07:15:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 72 transitions. [2021-11-25 07:15:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 07:15:56,696 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:56,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 38 states and 72 transitions. [2021-11-25 07:15:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 72 transitions. [2021-11-25 07:15:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 07:15:57,221 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:57,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:15:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:15:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:15:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 39 states and 73 transitions. [2021-11-25 07:15:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 73 transitions. [2021-11-25 07:15:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 07:15:57,655 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:15:57,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:15:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:15:57,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:15:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:15:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:15:57,761 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:15:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:15:57,804 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2021-11-25 07:15:57,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 07:15:57 ImpRootNode [2021-11-25 07:15:57,847 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-25 07:15:57,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 07:15:57,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 07:15:57,848 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 07:15:57,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:15:43" (3/4) ... [2021-11-25 07:15:57,850 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 07:15:57,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f203fed-61f6-4757-8fba-87041b54e647/bin/ukojak-d1pc8ZmBRL/witness.graphml [2021-11-25 07:15:57,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 07:15:57,936 INFO L158 Benchmark]: Toolchain (without parser) took 15150.19ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 54.4MB in the beginning and 35.1MB in the end (delta: 19.3MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. [2021-11-25 07:15:57,937 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 96.5MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:15:57,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.26ms. Allocated memory is still 96.5MB. Free memory was 54.2MB in the beginning and 70.0MB in the end (delta: -15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 07:15:57,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.21ms. Allocated memory is still 96.5MB. Free memory was 70.0MB in the beginning and 68.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:15:57,939 INFO L158 Benchmark]: Boogie Preprocessor took 35.04ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 67.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:15:57,940 INFO L158 Benchmark]: RCFGBuilder took 442.83ms. Allocated memory is still 96.5MB. Free memory was 67.2MB in the beginning and 55.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 07:15:57,941 INFO L158 Benchmark]: CodeCheck took 14252.19ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 55.0MB in the beginning and 37.2MB in the end (delta: 17.8MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. [2021-11-25 07:15:57,942 INFO L158 Benchmark]: Witness Printer took 87.66ms. Allocated memory is still 121.6MB. Free memory was 37.2MB in the beginning and 35.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:15:57,971 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.2s, OverallIterations: 16, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 331 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2564 IncrementalHoareTripleChecker+Invalid, 3783 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1219 mSolverCounterUnsat, 60 mSDtfsCounter, 2564 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1599 GetRequests, 1335 SyntacticMatches, 74 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20054 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 1056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 35/127 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int MAX = __VERIFIER_nondet_uint(); [L17] COND FALSE !(!(MAX > 0)) [L18] char str1[MAX], str2[MAX]; [L19] int cont, i, j; [L20] cont = 0 [L22] i=0 VAL [cont=0, i=0, MAX=2, str1={5368:0}, str2={5369:0}] [L22] COND TRUE i= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- VAL [cont=0, i=0, j=1, MAX=2, str1={5368:0}, str2={5369:0}] [L29] COND TRUE i >= 0 [L30] EXPR str1[0] [L30] str2[j] = str1[0] [L31] j++ [L29] i-- VAL [cont=0, i=-1, j=2, MAX=2, str1={5368:0}, str2={5369:0}] [L29] COND FALSE !(i >= 0) [L34] j = MAX-1 [L35] i=0 VAL [cont=0, i=0, j=1, MAX=2, str1={5368:0}, str2={5369:0}] [L35] COND TRUE i