./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ --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 f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:08:10,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:08:10,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:08:10,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:08:10,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:08:10,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:08:10,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:08:10,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:08:10,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:08:10,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:08:10,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:08:10,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:08:10,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:08:10,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:08:10,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:08:10,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:08:10,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:08:10,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:08:10,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:08:10,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:08:11,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:08:11,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:08:11,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:08:11,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:08:11,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:08:11,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:08:11,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:08:11,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:08:11,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:08:11,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:08:11,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:08:11,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:08:11,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:08:11,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:08:11,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:08:11,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:08:11,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:08:11,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:08:11,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:08:11,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:08:11,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:08:11,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 01:08:11,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:08:11,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:08:11,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:08:11,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:08:11,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:08:11,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:08:11,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:08:11,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:08:11,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:08:11,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:08:11,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:08:11,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:08:11,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:08:11,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:08:11,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:08:11,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:08:11,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:08:11,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:08:11,090 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:08:11,090 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:08:11,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:08:11,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:08:11,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:08:11,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:08:11,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:08:11,092 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:08:11,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:08:11,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:08:11,092 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_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a [2021-11-23 01:08:11,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:08:11,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:08:11,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:08:11,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:08:11,483 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:08:11,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2021-11-23 01:08:11,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/data/a98646c74/855f3b65c50346408359de281b5ca4b7/FLAG6490a2da3 [2021-11-23 01:08:12,182 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:08:12,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2021-11-23 01:08:12,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/data/a98646c74/855f3b65c50346408359de281b5ca4b7/FLAG6490a2da3 [2021-11-23 01:08:12,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/data/a98646c74/855f3b65c50346408359de281b5ca4b7 [2021-11-23 01:08:12,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:08:12,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:08:12,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:08:12,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:08:12,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:08:12,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e8d1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12, skipping insertion in model container [2021-11-23 01:08:12,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:08:12,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:08:12,428 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_7b167f81-4953-4aeb-b129-e7cdb96727ba/sv-benchmarks/c/recursive-simple/id2_b3_o2.c[771,784] [2021-11-23 01:08:12,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:08:12,446 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:08:12,476 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_7b167f81-4953-4aeb-b129-e7cdb96727ba/sv-benchmarks/c/recursive-simple/id2_b3_o2.c[771,784] [2021-11-23 01:08:12,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:08:12,488 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:08:12,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12 WrapperNode [2021-11-23 01:08:12,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:08:12,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:08:12,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:08:12,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:08:12,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,526 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-11-23 01:08:12,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:08:12,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:08:12,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:08:12,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:08:12,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:08:12,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:08:12,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:08:12,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:08:12,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:08:12,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:08:12,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:08:12,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:08:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:08:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:08:12,646 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-11-23 01:08:12,646 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-11-23 01:08:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:08:12,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:08:12,647 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-11-23 01:08:12,647 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-11-23 01:08:12,727 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:08:12,729 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:08:12,849 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:08:12,877 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:08:12,877 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:08:12,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:12 BoogieIcfgContainer [2021-11-23 01:08:12,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:08:12,881 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:08:12,881 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:08:12,897 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:08:12,897 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:12" (1/1) ... [2021-11-23 01:08:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:08:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:08:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2021-11-23 01:08:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-23 01:08:12,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 01:08:12,986 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:08:12,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:08:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:08:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:08:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:08:13,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2021-11-23 01:08:13,403 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-23 01:08:13,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 01:08:13,404 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:08:13,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:08:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:08:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:08:14,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:08:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2021-11-23 01:08:14,155 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-11-23 01:08:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 01:08:14,156 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:08:14,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:08:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:08:14,222 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:08:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:08:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:08:14,354 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:08:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:08:14,386 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2021-11-23 01:08:14,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:08:14 ImpRootNode [2021-11-23 01:08:14,434 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:08:14,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:08:14,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:08:14,439 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:08:14,439 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:08:12" (3/4) ... [2021-11-23 01:08:14,446 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 01:08:14,505 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:08:14,505 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:08:14,506 INFO L158 Benchmark]: Toolchain (without parser) took 2301.39ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 60.9MB in the beginning and 72.0MB in the end (delta: -11.1MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-11-23 01:08:14,507 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory was 48.2MB in the beginning and 48.2MB in the end (delta: 39.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:08:14,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.45ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 69.8MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:08:14,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.28ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:08:14,509 INFO L158 Benchmark]: Boogie Preprocessor took 21.70ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 67.6MB in the end (delta: 894.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:08:14,510 INFO L158 Benchmark]: RCFGBuilder took 330.29ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 58.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 01:08:14,511 INFO L158 Benchmark]: CodeCheck took 1553.10ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 57.8MB in the beginning and 74.1MB in the end (delta: -16.3MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-11-23 01:08:14,512 INFO L158 Benchmark]: Witness Printer took 67.36ms. Allocated memory is still 121.6MB. Free memory was 74.1MB in the beginning and 72.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:08:14,516 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 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, 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, 42 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 37 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] unsigned int input = __VERIFIER_nondet_uint(); [L25] CALL, EXPR id(input) VAL [\old(x)=2] [L10] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=1] [L17] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L18] CALL, EXPR id(x-1) VAL [\old(x)=0] [L10] COND TRUE x==0 [L10] return 0; VAL [\old(x)=0, \result=0, x=0] [L18] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L18] unsigned int ret = id(x-1) + 1; [L19] COND FALSE !(ret > 3) [L20] return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L11] RET, EXPR id2(x-1) VAL [\old(x)=2, id2(x-1)=1, x=2] [L11] unsigned int ret = id2(x-1) + 1; [L12] COND FALSE !(ret > 3) [L13] return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L25] RET, EXPR id(input) VAL [id(input)=2, input=2] [L25] unsigned int result = id(input); [L26] COND TRUE result == 2 VAL [input=2, result=2] [L27] reach_error() VAL [input=2, result=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory was 48.2MB in the beginning and 48.2MB in the end (delta: 39.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.45ms. Allocated memory is still 94.4MB. Free memory was 60.7MB in the beginning and 69.8MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.28ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.70ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 67.6MB in the end (delta: 894.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.29ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 58.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1553.10ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 57.8MB in the beginning and 74.1MB in the end (delta: -16.3MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Witness Printer took 67.36ms. Allocated memory is still 121.6MB. Free memory was 74.1MB in the beginning and 72.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 01:08:14,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b167f81-4953-4aeb-b129-e7cdb96727ba/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE