./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/config/KojakReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm --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 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 20:17:21,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 20:17:21,751 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/config/svcomp-Overflow-32bit-Kojak_Default.epf [2024-11-13 20:17:21,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 20:17:21,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-13 20:17:21,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 20:17:21,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 20:17:21,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-13 20:17:21,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 20:17:21,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 20:17:21,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 20:17:21,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 20:17:21,791 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 20:17:21,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 20:17:21,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 20:17:21,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 20:17:21,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 20:17:21,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 20:17:21,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 20:17:21,794 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 20:17:21,794 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 20:17:21,794 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 20:17:21,795 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 20:17:21,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 20:17:21,795 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 20:17:21,795 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-13 20:17:21,795 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-13 20:17:21,795 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-13 20:17:21,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 20:17:21,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:17:21,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 20:17:21,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 20:17:21,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 20:17:21,796 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-13 20:17:21,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 20:17:21,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm 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 -> 494d69f416dd1b0b56dc0371ee72744b83dbc298da37778d271d6f779b4cdcdc [2024-11-13 20:17:22,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 20:17:22,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 20:17:22,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 20:17:22,208 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 20:17:22,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 20:17:22,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/../../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c Unable to find full path for "g++" [2024-11-13 20:17:24,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 20:17:24,415 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 20:17:24,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd-ll.c [2024-11-13 20:17:24,424 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/data/dfb3765f9/506eb77f2dd14114afe30e14c8b07b1f/FLAG9f378a4c1 [2024-11-13 20:17:24,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/data/dfb3765f9/506eb77f2dd14114afe30e14c8b07b1f [2024-11-13 20:17:24,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 20:17:24,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 20:17:24,450 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 20:17:24,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 20:17:24,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 20:17:24,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444c6d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24, skipping insertion in model container [2024-11-13 20:17:24,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,479 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 20:17:24,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:17:24,690 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 20:17:24,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 20:17:24,751 INFO L204 MainTranslator]: Completed translation [2024-11-13 20:17:24,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24 WrapperNode [2024-11-13 20:17:24,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 20:17:24,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 20:17:24,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 20:17:24,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 20:17:24,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,798 INFO L138 Inliner]: procedures = 16, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2024-11-13 20:17:24,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 20:17:24,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 20:17:24,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 20:17:24,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 20:17:24,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 20:17:24,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 20:17:24,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 20:17:24,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 20:17:24,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 08:17:24" (1/1) ... [2024-11-13 20:17:24,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-13 20:17:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/z3 [2024-11-13 20:17:24,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-13 20:17:24,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_003c73f0-efdc-4c85-a414-75f1f469ea13/bin/ukojak-verify-EEHR8qb7sm/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-13 20:17:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 20:17:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_48_0 [2024-11-13 20:17:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_48_0 [2024-11-13 20:17:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 20:17:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 20:17:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 20:17:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 20:17:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 20:17:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 20:17:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 20:17:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 20:17:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 20:17:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 20:17:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 20:17:25,073 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 20:17:25,075 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 20:17:26,264 INFO L? ?]: Removed 165 outVars from TransFormulas that were not future-live. [2024-11-13 20:17:26,265 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 20:17:26,338 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 20:17:26,338 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 20:17:26,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:17:26 BoogieIcfgContainer [2024-11-13 20:17:26,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 20:17:26,339 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-13 20:17:26,340 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-13 20:17:26,353 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-13 20:17:26,353 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 08:17:26" (1/1) ... [2024-11-13 20:17:26,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 20:17:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-13 20:17:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 145 states and 155 transitions. [2024-11-13 20:17:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2024-11-13 20:17:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 20:17:26,425 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-13 20:17:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 20:17:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 20:17:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 20:17:26,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 20:17:26,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 20:17:26,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 20:17:26,958 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 1371 treesize of output 1361 [2024-11-13 20:17:27,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 20:17:27,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 20:17:28,120 INFO L224 Elim1Store]: Index analysis took 120 ms