./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB --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 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 16:37:46,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:37:46,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:37:46,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:37:46,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:37:46,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:37:46,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:37:46,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:37:46,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:37:46,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:37:46,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:37:46,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:37:46,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:37:46,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:37:46,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:37:46,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:37:46,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:37:46,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:37:46,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:37:46,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:37:46,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:37:46,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:37:46,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:37:46,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:37:46,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:37:46,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:37:46,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:37:46,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:37:46,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:37:46,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:37:46,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:37:46,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:37:46,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:37:46,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:37:46,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:37:46,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:37:46,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:37:46,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:37:46,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:37:46,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:37:46,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:37:46,468 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:37:46,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:37:46,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:37:46,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:37:46,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:37:46,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:37:46,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:37:46,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:37:46,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:37:46,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:37:46,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:37:46,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:37:46,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:37:46,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:37:46,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:37:46,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:37:46,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:37:46,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:37:46,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:37:46,532 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:37:46,532 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:37:46,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:37:46,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:37:46,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:37:46,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:37:46,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:37:46,534 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:37:46,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:37:46,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:37:46,540 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_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 019a1f0c8a0db266ae045e6c9616b1be3853f9265d9110ea0f95df9172dad7ef [2022-10-17 16:37:46,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:37:46,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:37:46,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:37:46,838 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:37:46,839 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:37:46,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2022-10-17 16:37:46,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/data/611f99afc/e10cfc6d426f4e498e6d0fc932b848ce/FLAG8969780f3 [2022-10-17 16:37:47,378 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:37:47,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c [2022-10-17 16:37:47,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/data/611f99afc/e10cfc6d426f4e498e6d0fc932b848ce/FLAG8969780f3 [2022-10-17 16:37:47,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/data/611f99afc/e10cfc6d426f4e498e6d0fc932b848ce [2022-10-17 16:37:47,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:37:47,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:37:47,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:37:47,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:37:47,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:37:47,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342cd43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47, skipping insertion in model container [2022-10-17 16:37:47,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:37:47,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:37:47,976 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_6e67183a-e9f4-4e70-8a74-5f051f6a059d/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c[450,463] [2022-10-17 16:37:47,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:37:47,993 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:37:48,011 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_6e67183a-e9f4-4e70-8a74-5f051f6a059d/sv-benchmarks/c/recursive-simple/id_i5_o5-1.c[450,463] [2022-10-17 16:37:48,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:37:48,025 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:37:48,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48 WrapperNode [2022-10-17 16:37:48,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:37:48,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:37:48,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:37:48,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:37:48,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,064 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-10-17 16:37:48,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:37:48,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:37:48,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:37:48,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:37:48,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,090 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:37:48,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:37:48,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:37:48,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:37:48,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:37:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:37:48,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:37:48,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:37:48,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:37:48,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:37:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:37:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:37:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-10-17 16:37:48,192 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-10-17 16:37:48,259 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:37:48,261 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:37:48,415 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:37:48,429 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:37:48,429 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 16:37:48,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:37:48 BoogieIcfgContainer [2022-10-17 16:37:48,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:37:48,433 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:37:48,433 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:37:48,444 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:37:48,444 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:37:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2022-10-17 16:37:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-10-17 16:37:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:37:48,519 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:48,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:37:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2022-10-17 16:37:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-10-17 16:37:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 16:37:48,961 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:37:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2022-10-17 16:37:49,586 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-10-17 16:37:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 16:37:49,588 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 16:37:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2022-10-17 16:37:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2022-10-17 16:37:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 16:37:50,156 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-17 16:37:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2022-10-17 16:37:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2022-10-17 16:37:50,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 16:37:50,818 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-17 16:37:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 38 states and 70 transitions. [2022-10-17 16:37:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2022-10-17 16:37:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-17 16:37:51,440 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:51,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:51,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:37:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:51,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:37:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:51,614 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2022-10-17 16:37:51,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:37:51 ImpRootNode [2022-10-17 16:37:51,649 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:37:51,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:37:51,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:37:51,649 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:37:51,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:37:48" (3/4) ... [2022-10-17 16:37:51,652 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:37:51,704 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:37:51,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:37:51,721 INFO L158 Benchmark]: Toolchain (without parser) took 3971.27ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 57.8MB in the beginning and 35.3MB in the end (delta: 22.5MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2022-10-17 16:37:51,722 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:37:51,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.66ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 57.6MB in the beginning and 83.3MB in the end (delta: -25.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 16:37:51,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.96ms. Allocated memory is still 107.0MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:37:51,725 INFO L158 Benchmark]: Boogie Preprocessor took 28.44ms. Allocated memory is still 107.0MB. Free memory was 81.9MB in the beginning and 80.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:37:51,726 INFO L158 Benchmark]: RCFGBuilder took 336.84ms. Allocated memory is still 107.0MB. Free memory was 80.9MB in the beginning and 71.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 16:37:51,727 INFO L158 Benchmark]: CodeCheck took 3215.74ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 37.4MB in the end (delta: 34.3MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2022-10-17 16:37:51,732 INFO L158 Benchmark]: Witness Printer took 71.05ms. Allocated memory is still 107.0MB. Free memory was 37.4MB in the beginning and 35.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:37:51,738 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 551 IncrementalHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 97 mSDtfsCounter, 551 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1074 GetRequests, 1016 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 50/100 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 5; VAL [input=5] [L13] CALL, EXPR id(input) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [id(input)=5, input=5] [L13] int result = id(input); [L14] COND TRUE result == 5 VAL [input=5, result=5] [L15] reach_error() VAL [input=5, result=5] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.66ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 57.6MB in the beginning and 83.3MB in the end (delta: -25.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.96ms. Allocated memory is still 107.0MB. Free memory was 83.3MB in the beginning and 81.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.44ms. Allocated memory is still 107.0MB. Free memory was 81.9MB in the beginning and 80.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.84ms. Allocated memory is still 107.0MB. Free memory was 80.9MB in the beginning and 71.7MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 3215.74ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 37.4MB in the end (delta: 34.3MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * Witness Printer took 71.05ms. Allocated memory is still 107.0MB. Free memory was 37.4MB in the beginning and 35.3MB 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! [2022-10-17 16:37:51,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e67183a-e9f4-4e70-8a74-5f051f6a059d/bin/ukojak-92XMlrwhuB/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