./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/invert_string-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN --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 0.2.1-dev-53f42b1 [2021-11-21 04:35:48,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 04:35:48,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 04:35:48,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 04:35:48,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 04:35:48,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 04:35:48,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 04:35:48,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 04:35:48,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 04:35:48,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 04:35:48,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 04:35:48,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 04:35:48,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 04:35:48,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 04:35:48,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 04:35:48,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 04:35:48,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 04:35:48,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 04:35:48,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 04:35:48,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 04:35:48,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 04:35:48,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 04:35:48,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 04:35:48,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 04:35:48,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 04:35:48,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 04:35:48,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 04:35:48,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 04:35:48,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 04:35:48,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 04:35:48,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 04:35:48,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 04:35:48,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 04:35:48,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 04:35:48,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 04:35:48,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 04:35:48,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 04:35:48,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 04:35:48,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 04:35:48,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 04:35:48,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 04:35:48,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-21 04:35:48,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 04:35:48,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 04:35:48,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 04:35:48,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-21 04:35:48,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 04:35:48,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 04:35:48,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 04:35:48,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 04:35:48,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 04:35:48,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 04:35:48,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 04:35:48,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 04:35:48,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 04:35:48,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 04:35:48,417 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 04:35:48,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 04:35:48,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 04:35:48,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 04:35:48,418 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-21 04:35:48,418 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-21 04:35:48,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 04:35:48,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 04:35:48,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 04:35:48,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 04:35:48,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 04:35:48,420 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-21 04:35:48,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 04:35:48,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 04:35:48,421 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_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3da85103e65fd13a584e838d8b961878044a0a70e09ad1788e3ca53a404f357 [2021-11-21 04:35:48,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 04:35:48,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 04:35:48,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 04:35:48,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 04:35:48,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 04:35:48,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/../../sv-benchmarks/c/loops/invert_string-1.c [2021-11-21 04:35:48,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/data/a866400a9/e40e875892bd402aa495f30e94569fa6/FLAG0f2354589 [2021-11-21 04:35:49,274 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 04:35:49,274 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/sv-benchmarks/c/loops/invert_string-1.c [2021-11-21 04:35:49,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/data/a866400a9/e40e875892bd402aa495f30e94569fa6/FLAG0f2354589 [2021-11-21 04:35:49,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/data/a866400a9/e40e875892bd402aa495f30e94569fa6 [2021-11-21 04:35:49,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 04:35:49,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 04:35:49,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 04:35:49,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 04:35:49,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 04:35:49,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:49" (1/1) ... [2021-11-21 04:35:49,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cec26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:49, skipping insertion in model container [2021-11-21 04:35:49,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:35:49" (1/1) ... [2021-11-21 04:35:49,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 04:35:49,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 04:35:49,956 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_c965852e-9f01-42f3-8e70-6d3f91e9efea/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2021-11-21 04:35:49,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 04:35:49,986 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 04:35:49,997 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_c965852e-9f01-42f3-8e70-6d3f91e9efea/sv-benchmarks/c/loops/invert_string-1.c[352,365] [2021-11-21 04:35:50,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 04:35:50,019 INFO L208 MainTranslator]: Completed translation [2021-11-21 04:35:50,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50 WrapperNode [2021-11-21 04:35:50,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 04:35:50,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 04:35:50,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 04:35:50,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 04:35:50,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,059 INFO L137 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-21 04:35:50,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 04:35:50,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 04:35:50,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 04:35:50,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 04:35:50,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 04:35:50,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 04:35:50,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 04:35:50,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 04:35:50,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 04:35:50,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/z3 [2021-11-21 04:35:50,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-21 04:35:50,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-21 04:35:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 04:35:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 04:35:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 04:35:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 04:35:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 04:35:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 04:35:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 04:35:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 04:35:50,282 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 04:35:50,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 04:35:50,412 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 04:35:50,463 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 04:35:50,463 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 04:35:50,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:50 BoogieIcfgContainer [2021-11-21 04:35:50,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 04:35:50,466 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-21 04:35:50,466 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-21 04:35:50,476 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-21 04:35:50,477 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:50" (1/1) ... [2021-11-21 04:35:50,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 04:35:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 9 states and 12 transitions. [2021-11-21 04:35:50,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2021-11-21 04:35:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 04:35:50,547 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:50,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 10 states and 13 transitions. [2021-11-21 04:35:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2021-11-21 04:35:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 04:35:50,770 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:50,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 04:35:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 11 states and 14 transitions. [2021-11-21 04:35:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-11-21 04:35:50,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 04:35:50,941 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:50,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 17 states and 29 transitions. [2021-11-21 04:35:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 29 transitions. [2021-11-21 04:35:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 04:35:52,345 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:52,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:53,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 19 states and 33 transitions. [2021-11-21 04:35:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 33 transitions. [2021-11-21 04:35:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 04:35:53,201 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:53,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 20 states and 34 transitions. [2021-11-21 04:35:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 34 transitions. [2021-11-21 04:35:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 04:35:53,522 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:53,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 25 states and 48 transitions. [2021-11-21 04:35:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 48 transitions. [2021-11-21 04:35:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 04:35:55,581 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:55,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:56,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 27 states and 55 transitions. [2021-11-21 04:35:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 55 transitions. [2021-11-21 04:35:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 04:35:56,360 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:56,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 28 states and 56 transitions. [2021-11-21 04:35:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 56 transitions. [2021-11-21 04:35:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 04:35:56,787 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:56,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 04:35:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 33 states and 66 transitions. [2021-11-21 04:35:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 66 transitions. [2021-11-21 04:35:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 04:35:58,123 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:58,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:35:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:35:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 30 states and 53 transitions. [2021-11-21 04:35:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 53 transitions. [2021-11-21 04:35:58,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 04:35:58,776 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:35:58,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:35:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:35:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:36:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:36:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 35 states and 67 transitions. [2021-11-21 04:36:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 67 transitions. [2021-11-21 04:36:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 04:36:01,980 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:36:01,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:36:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:36:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:36:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:36:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 36 states and 68 transitions. [2021-11-21 04:36:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2021-11-21 04:36:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 04:36:02,542 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:36:02,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:36:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:36:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:36:03,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:36:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 37 states and 72 transitions. [2021-11-21 04:36:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 72 transitions. [2021-11-21 04:36:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 04:36:03,624 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:36:03,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:36:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:36:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:36:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:36:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 38 states and 72 transitions. [2021-11-21 04:36:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 72 transitions. [2021-11-21 04:36:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 04:36:04,102 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:36:04,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:36:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 04:36:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 04:36:04,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 04:36:04,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 39 states and 73 transitions. [2021-11-21 04:36:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 73 transitions. [2021-11-21 04:36:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 04:36:04,530 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 04:36:04,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 04:36:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 04:36:04,548 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 04:36:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 04:36:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 04:36:04,621 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 04:36:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 04:36:04,675 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2021-11-21 04:36:04,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 04:36:04 ImpRootNode [2021-11-21 04:36:04,739 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-21 04:36:04,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 04:36:04,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 04:36:04,740 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 04:36:04,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:35:50" (3/4) ... [2021-11-21 04:36:04,742 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 04:36:04,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c965852e-9f01-42f3-8e70-6d3f91e9efea/bin/ukojak-vF6T2TMglN/witness.graphml [2021-11-21 04:36:04,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 04:36:04,863 INFO L158 Benchmark]: Toolchain (without parser) took 15143.74ms. Allocated memory was 104.9MB in the beginning and 205.5MB in the end (delta: 100.7MB). Free memory was 71.5MB in the beginning and 159.4MB in the end (delta: -87.9MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-11-21 04:36:04,864 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory was 57.3MB in the beginning and 57.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 04:36:04,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.60ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 71.4MB in the beginning and 113.8MB in the end (delta: -42.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 04:36:04,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.63ms. Allocated memory is still 140.5MB. Free memory was 113.8MB in the beginning and 112.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 04:36:04,866 INFO L158 Benchmark]: Boogie Preprocessor took 40.84ms. Allocated memory is still 140.5MB. Free memory was 112.3MB in the beginning and 111.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 04:36:04,867 INFO L158 Benchmark]: RCFGBuilder took 363.24ms. Allocated memory is still 140.5MB. Free memory was 111.2MB in the beginning and 98.6MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 04:36:04,868 INFO L158 Benchmark]: CodeCheck took 14272.73ms. Allocated memory was 140.5MB in the beginning and 205.5MB in the end (delta: 65.0MB). Free memory was 98.6MB in the beginning and 161.5MB in the end (delta: -62.8MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-21 04:36:04,869 INFO L158 Benchmark]: Witness Printer took 122.90ms. Allocated memory is still 205.5MB. Free memory was 161.5MB in the beginning and 159.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 04:36:04,873 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, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 5.0s 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, 1609 GetRequests, 1345 SyntacticMatches, 74 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20054 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s 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={22503:0}, str2={22502:0}] [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={22503:0}, str2={22502:0}] [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={22503:0}, str2={22502:0}] [L29] COND FALSE !(i >= 0) [L34] j = MAX-1 [L35] i=0 VAL [cont=0, i=0, j=1, MAX=2, str1={22503:0}, str2={22502:0}] [L35] COND TRUE i