./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e0f8aa0844a5ba41cd0b9424670c4aa0d5aee80dbcd7ed0d8d6a3f6a326ff21f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:35:00,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:35:00,738 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 03:35:00,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:35:00,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:35:00,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:35:00,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:35:00,769 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:35:00,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:35:00,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:35:00,770 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:35:00,770 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:35:00,770 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:35:00,770 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:35:00,770 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:35:00,770 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:35:00,771 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:35:00,771 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:35:00,771 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:35:00,771 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:35:00,771 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:35:00,771 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:35:00,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:35:00,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:35:00,773 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:35:00,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:35:00,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:35:00,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:35:00,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:35:00,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:35:00,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:35:00,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:35:00,774 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:35:00,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:35:00,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:35:00,774 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:35:00,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:35:00,774 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E 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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f8aa0844a5ba41cd0b9424670c4aa0d5aee80dbcd7ed0d8d6a3f6a326ff21f [2024-11-14 03:35:01,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:35:01,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:35:01,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:35:01,070 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:35:01,070 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:35:01,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-back-serstep.c Unable to find full path for "g++" [2024-11-14 03:35:03,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:35:03,986 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:35:03,987 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-back-serstep.c [2024-11-14 03:35:04,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/data/723be9b48/37769f9397904be988c2dd9fc92e4cd3/FLAGac32ca88e [2024-11-14 03:35:04,086 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/data/723be9b48/37769f9397904be988c2dd9fc92e4cd3 [2024-11-14 03:35:04,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:35:04,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:35:04,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:35:04,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:35:04,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:35:04,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:35:04" (1/1) ... [2024-11-14 03:35:04,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c69f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:04, skipping insertion in model container [2024-11-14 03:35:04,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:35:04" (1/1) ... [2024-11-14 03:35:04,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:35:04,529 WARN L250 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_d64eb8e6-37a8-4060-8de4-4873c703441c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-back-serstep.c[1175,1188] [2024-11-14 03:35:05,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:35:05,739 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:35:05,770 WARN L250 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_d64eb8e6-37a8-4060-8de4-4873c703441c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.4.prop1-back-serstep.c[1175,1188] [2024-11-14 03:35:06,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:35:06,485 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:35:06,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06 WrapperNode [2024-11-14 03:35:06,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:35:06,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:35:06,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:35:06,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:35:06,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:06,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:09,924 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27363 [2024-11-14 03:35:09,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:35:09,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:35:09,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:35:09,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:35:09,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:09,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:10,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:10,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:11,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:11,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:11,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:11,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:12,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:35:12,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:35:12,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:35:12,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:35:12,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:35:06" (1/1) ... [2024-11-14 03:35:12,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:35:12,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:35:12,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:35:12,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d64eb8e6-37a8-4060-8de4-4873c703441c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:35:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:35:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:35:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:35:12,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:35:14,153 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:35:14,156 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:37:33,618 INFO L? ?]: Removed 14587 outVars from TransFormulas that were not future-live. [2024-11-14 03:37:33,618 INFO L287 CfgBuilder]: Performing block encoding