./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 56632fc3bb2b6db322c5e40eff8fe15b1c7affe1d35304d711252a046867d952 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:51:40,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:51:41,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-19 02:51:41,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:51:41,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:51:41,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:51:41,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 02:51:41,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 02:51:41,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:51:41,117 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:51:41,117 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:51:41,118 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 02:51:41,118 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 02:51:41,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:51:41,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 02:51:41,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:51:41,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 02:51:41,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:51:41,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 02:51:41,123 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 02:51:41,124 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:51:41,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 02:51:41,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 02:51:41,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:51:41,125 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:51:41,126 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:51:41,126 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:51:41,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:51:41,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:51:41,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:51:41,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:51:41,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 02:51:41,129 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:51:41,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:51:41,130 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 02:51:41,130 INFO L153 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_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56632fc3bb2b6db322c5e40eff8fe15b1c7affe1d35304d711252a046867d952 [2023-11-19 02:51:41,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:51:41,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:51:41,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:51:41,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:51:41,449 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:51:41,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c [2023-11-19 02:51:44,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:51:44,862 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:51:44,863 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd.c [2023-11-19 02:51:44,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/data/b3a514884/3b0b085eee9f4490b4f163add92d515b/FLAG88d6fec5d [2023-11-19 02:51:44,889 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/data/b3a514884/3b0b085eee9f4490b4f163add92d515b [2023-11-19 02:51:44,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:51:44,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:51:44,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:51:44,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:51:44,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:51:44,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:44" (1/1) ... [2023-11-19 02:51:44,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419c39c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:44, skipping insertion in model container [2023-11-19 02:51:44,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:44" (1/1) ... [2023-11-19 02:51:44,933 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:51:45,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:51:45,165 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:51:45,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:51:45,207 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:51:45,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45 WrapperNode [2023-11-19 02:51:45,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:51:45,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:51:45,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:51:45,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:51:45,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,259 INFO L138 Inliner]: procedures = 16, calls = 114, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 151 [2023-11-19 02:51:45,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:51:45,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:51:45,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:51:45,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:51:45,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:51:45,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:51:45,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:51:45,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:51:45,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:45" (1/1) ... [2023-11-19 02:51:45,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:51:45,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:51:45,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:51:45,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2665ce93-5510-469b-8c1a-ae7eb8fb45bb/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:51:45,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 02:51:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2023-11-19 02:51:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2023-11-19 02:51:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 02:51:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 02:51:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 02:51:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:51:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 02:51:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:51:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:51:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 02:51:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 02:51:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 02:51:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:51:45,531 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:51:45,534 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:51:46,137 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:51:46,176 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:51:46,176 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 02:51:46,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:46 BoogieIcfgContainer [2023-11-19 02:51:46,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:51:46,183 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:51:46,183 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:51:46,194 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:51:46,194 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:46" (1/1) ... [2023-11-19 02:51:46,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:51:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:51:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 145 states and 155 transitions. [2023-11-19 02:51:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2023-11-19 02:51:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 02:51:46,271 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:51:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:51:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:51:46,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 02:51:46,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 02:51:46,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 02:51:46,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 469 treesize of output 469 [2023-11-19 02:51:48,069 INFO L190 IndexEqualityManager]: detected not equals via solver