./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3 --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd8c06ba54c8d75ab2045420726c9cc38baf19bb8d27adf60901b88a40183e6e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 02:16:16,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 02:16:16,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-64bit-Kojak_Default.epf [2024-11-25 02:16:16,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 02:16:16,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 02:16:16,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 02:16:16,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 02:16:16,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 02:16:16,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 02:16:16,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 02:16:16,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 02:16:16,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 02:16:16,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 02:16:16,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 02:16:16,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 02:16:16,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 02:16:16,809 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 02:16:16,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 02:16:16,811 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 02:16:16,811 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 02:16:16,811 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 02:16:16,812 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 02:16:16,812 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 02:16:16,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 02:16:16,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:16:16,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 02:16:16,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 02:16:16,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 02:16:16,812 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 02:16:16,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 02:16:16,813 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_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3 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 -> Kojak 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 -> bd8c06ba54c8d75ab2045420726c9cc38baf19bb8d27adf60901b88a40183e6e [2024-11-25 02:16:17,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 02:16:17,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 02:16:17,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 02:16:17,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 02:16:17,160 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 02:16:17,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2024-11-25 02:16:20,227 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/data/b57ac812a/8027a3afa40242358bec20caf0494b5f/FLAG57d36cef5 [2024-11-25 02:16:20,747 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 02:16:20,748 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2024-11-25 02:16:20,781 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/data/b57ac812a/8027a3afa40242358bec20caf0494b5f/FLAG57d36cef5 [2024-11-25 02:16:20,809 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/data/b57ac812a/8027a3afa40242358bec20caf0494b5f [2024-11-25 02:16:20,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 02:16:20,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 02:16:20,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 02:16:20,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 02:16:20,822 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 02:16:20,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:16:20" (1/1) ... [2024-11-25 02:16:20,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5d2e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:20, skipping insertion in model container [2024-11-25 02:16:20,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:16:20" (1/1) ... [2024-11-25 02:16:20,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 02:16:21,222 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_3174424d-cfe4-4f33-8713-84a89bd15c53/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c[1177,1190] [2024-11-25 02:16:22,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:16:22,160 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 02:16:22,172 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_3174424d-cfe4-4f33-8713-84a89bd15c53/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c[1177,1190] [2024-11-25 02:16:22,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:16:22,885 INFO L204 MainTranslator]: Completed translation [2024-11-25 02:16:22,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22 WrapperNode [2024-11-25 02:16:22,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 02:16:22,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 02:16:22,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 02:16:22,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 02:16:22,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:23,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:25,050 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18871 [2024-11-25 02:16:25,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 02:16:25,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 02:16:25,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 02:16:25,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 02:16:25,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:25,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:25,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:25,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:26,775 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:26,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:26,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:27,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:27,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:27,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 02:16:27,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 02:16:27,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 02:16:27,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 02:16:27,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:16:22" (1/1) ... [2024-11-25 02:16:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:16:27,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 02:16:27,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 02:16:27,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3174424d-cfe4-4f33-8713-84a89bd15c53/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 02:16:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 02:16:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 02:16:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 02:16:27,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 02:16:28,909 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 02:16:28,911 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 02:17:06,534 INFO L? ?]: Removed 10444 outVars from TransFormulas that were not future-live. [2024-11-25 02:17:06,534 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 02:17:50,770 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 02:17:50,770 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-25 02:17:50,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:17:50 BoogieIcfgContainer [2024-11-25 02:17:50,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 02:17:50,771 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 02:17:50,771 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 02:17:50,779 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 02:17:50,779 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:17:50" (1/1) ... [2024-11-25 02:17:50,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 02:17:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 02:17:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2024-11-25 02:17:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2024-11-25 02:17:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-25 02:17:50,838 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 02:17:50,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 02:17:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat