./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/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 32bit --witnessprinter.graph.data.programhash 84717a5c2896f013826b4f3140ab30111b65bd200eaa9dc30a2a86e9a93af713 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 02:45:33,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 02:45:33,186 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-25 02:45:33,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 02:45:33,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 02:45:33,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 02:45:33,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 02:45:33,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 02:45:33,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 02:45:33,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 02:45:33,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 02:45:33,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 02:45:33,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 02:45:33,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 02:45:33,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 02:45:33,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 02:45:33,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 02:45:33,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 02:45:33,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 02:45:33,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 02:45:33,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 02:45:33,232 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 02:45:33,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 02:45:33,233 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 02:45:33,233 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 02:45:33,233 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 02:45:33,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 02:45:33,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:45:33,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 02:45:33,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 02:45:33,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 02:45:33,234 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 02:45:33,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 02:45:33,234 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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84717a5c2896f013826b4f3140ab30111b65bd200eaa9dc30a2a86e9a93af713 [2024-11-25 02:45:33,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 02:45:33,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 02:45:33,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 02:45:33,554 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 02:45:33,554 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 02:45:33,555 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i [2024-11-25 02:45:36,474 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/f6bed5c12/5b8bb572552f4a8b8d8c17bb1ea65264/FLAG0e24543dd [2024-11-25 02:45:36,754 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 02:45:36,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i [2024-11-25 02:45:36,770 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/f6bed5c12/5b8bb572552f4a8b8d8c17bb1ea65264/FLAG0e24543dd [2024-11-25 02:45:36,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/f6bed5c12/5b8bb572552f4a8b8d8c17bb1ea65264 [2024-11-25 02:45:36,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 02:45:36,796 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 02:45:36,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 02:45:36,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 02:45:36,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 02:45:36,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:45:36" (1/1) ... [2024-11-25 02:45:36,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c7d2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:36, skipping insertion in model container [2024-11-25 02:45:36,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:45:36" (1/1) ... [2024-11-25 02:45:36,833 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 02:45:36,982 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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i[916,929] [2024-11-25 02:45:37,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:45:37,033 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 02:45:37,044 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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i[916,929] [2024-11-25 02:45:37,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:45:37,114 INFO L204 MainTranslator]: Completed translation [2024-11-25 02:45:37,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37 WrapperNode [2024-11-25 02:45:37,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 02:45:37,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 02:45:37,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 02:45:37,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 02:45:37,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,182 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2024-11-25 02:45:37,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 02:45:37,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 02:45:37,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 02:45:37,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 02:45:37,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,210 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 02:45:37,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 02:45:37,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 02:45:37,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 02:45:37,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:45:37,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 02:45:37,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 02:45:37,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 02:45:37,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 02:45:37,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-25 02:45:37,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-25 02:45:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 02:45:37,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 02:45:37,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 02:45:37,384 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 02:45:37,386 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 02:45:37,720 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-25 02:45:37,721 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 02:45:37,893 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 02:45:37,893 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-25 02:45:37,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:45:37 BoogieIcfgContainer [2024-11-25 02:45:37,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 02:45:37,895 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 02:45:37,895 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 02:45:37,905 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 02:45:37,905 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:45:37" (1/1) ... [2024-11-25 02:45:37,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 02:45:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 02:45:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 28 states and 41 transitions. [2024-11-25 02:45:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2024-11-25 02:45:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-25 02:45:37,972 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 02:45:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 02:45:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-25 02:45:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:45:38,466 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 02:45:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 02:45:38,617 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2024-11-25 02:45:38,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 02:45:38 ImpRootNode [2024-11-25 02:45:38,712 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 02:45:38,718 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 02:45:38,718 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 02:45:38,719 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 02:45:38,719 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:45:37" (3/4) ... [2024-11-25 02:45:38,722 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-25 02:45:38,723 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 02:45:38,727 INFO L158 Benchmark]: Toolchain (without parser) took 1929.11ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 94.9MB in the end (delta: 24.3MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2024-11-25 02:45:38,727 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:45:38,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.59ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 106.5MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 02:45:38,728 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.48ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 104.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:45:38,729 INFO L158 Benchmark]: Boogie Preprocessor took 46.03ms. Allocated memory is still 142.6MB. Free memory was 104.6MB in the beginning and 103.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 02:45:38,730 INFO L158 Benchmark]: RCFGBuilder took 659.02ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 72.9MB in the end (delta: 30.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-25 02:45:38,731 INFO L158 Benchmark]: CodeCheck took 816.99ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 95.1MB in the end (delta: -22.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:45:38,731 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 21.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 02:45:38,733 INFO L338 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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, ConComCheckerStatistics: No data available - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftRight at line 44. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 2; [L23] signed short int var_1_4 = -64; [L24] signed short int var_1_5 = 256; [L25] unsigned short int var_1_6 = 128; [L26] unsigned short int var_1_7 = 256; [L27] signed long int var_1_8 = 50; [L28] unsigned char var_1_9 = 0; [L29] signed long int var_1_10 = -4; [L30] signed long int var_1_11 = 15; [L31] signed long int var_1_12 = 0; [L32] signed long int var_1_13 = 25; [L33] unsigned short int var_1_14 = 50; [L34] signed short int last_1_var_1_1 = 2; [L35] unsigned short int last_1_var_1_6 = 128; [L36] signed long int last_1_var_1_8 = 50; [L99] isInitial = 1 [L100] FCALL initially() [L102] CALL updateLastVariables() [L90] last_1_var_1_1 = var_1_1 [L91] last_1_var_1_6 = var_1_6 [L92] last_1_var_1_8 = var_1_8 [L102] RET updateLastVariables() [L103] CALL updateVariables() [L69] var_1_4 = __VERIFIER_nondet_short() [L70] CALL assume_abort_if_not(var_1_4 >= -16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=256, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_4 >= -16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=256, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L71] CALL assume_abort_if_not(var_1_4 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=256, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_4 <= 16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=256, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L72] var_1_5 = __VERIFIER_nondet_short() [L73] CALL assume_abort_if_not(var_1_5 >= -16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_5 >= -16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L74] CALL assume_abort_if_not(var_1_5 <= 16383) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_5 <= 16383) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=256, var_1_8=50, var_1_9=0] [L75] var_1_7 = __VERIFIER_nondet_ushort() [L76] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_8=50, var_1_9=0] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_8=50, var_1_9=0] [L77] CALL assume_abort_if_not(var_1_7 <= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=0] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_7 <= 32767) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=0] [L78] var_1_9 = __VERIFIER_nondet_uchar() [L79] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50] [L80] CALL assume_abort_if_not(var_1_9 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_9 <= 1) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-4, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L81] var_1_10 = __VERIFIER_nondet_long() [L82] CALL assume_abort_if_not(var_1_10 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_10 >= -2147483648) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L83] CALL assume_abort_if_not(var_1_10 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_10 <= 2147483647) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L84] CALL assume_abort_if_not(var_1_10 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(var_1_10 != 0) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=0, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L85] var_1_12 = __VERIFIER_nondet_long() [L86] CALL assume_abort_if_not(var_1_12 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=-2147483648, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_12 >= -2147483648) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=-2147483648, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L87] CALL assume_abort_if_not(var_1_12 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=-2147483648, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_12 <= 2147483647) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=15, var_1_12=-2147483648, var_1_13=25, var_1_14=50, var_1_1=2, var_1_4=3, var_1_5=2, var_1_6=128, var_1_7=-44392, var_1_8=50, var_1_9=1] [L103] RET updateVariables() [L104] CALL step() [L40] COND TRUE ! (last_1_var_1_6 <= last_1_var_1_1) [L41] var_1_1 = (var_1_4 + var_1_5) [L43] signed long int stepLocal_0 = 1 * var_1_4; [L44] EXPR var_1_1 >> var_1_5 [L44] COND TRUE (var_1_1 >> var_1_5) > stepLocal_0 [L45] var_1_6 = (((((42286 - var_1_7)) > (0)) ? ((42286 - var_1_7)) : (0))) [L49] var_1_11 = var_1_12 [L50] var_1_13 = var_1_12 [L51] var_1_14 = var_1_7 [L52] signed long int stepLocal_2 = var_1_4 / var_1_10; [L53] unsigned short int stepLocal_1 = var_1_7; [L54] COND TRUE \read(var_1_9) [L55] var_1_8 = ((((var_1_6) < (last_1_var_1_8)) ? (var_1_6) : (last_1_var_1_8))) [L104] RET step() [L105] CALL, EXPR property() [L95] EXPR ((! (last_1_var_1_6 <= last_1_var_1_1)) ? (var_1_1 == ((signed short int) (var_1_4 + var_1_5))) : 1) && (((var_1_1 >> var_1_5) > (1 * var_1_4)) ? (var_1_6 == ((unsigned short int) (((((42286 - var_1_7)) > (0)) ? ((42286 - var_1_7)) : (0))))) : (var_1_6 == ((unsigned short int) var_1_7))) [L95] EXPR var_1_1 >> var_1_5 [L95] EXPR ((! (last_1_var_1_6 <= last_1_var_1_1)) ? (var_1_1 == ((signed short int) (var_1_4 + var_1_5))) : 1) && (((var_1_1 >> var_1_5) > (1 * var_1_4)) ? (var_1_6 == ((unsigned short int) (((((42286 - var_1_7)) > (0)) ? ((42286 - var_1_7)) : (0))))) : (var_1_6 == ((unsigned short int) var_1_7))) [L95-L96] return ((((((! (last_1_var_1_6 <= last_1_var_1_1)) ? (var_1_1 == ((signed short int) (var_1_4 + var_1_5))) : 1) && (((var_1_1 >> var_1_5) > (1 * var_1_4)) ? (var_1_6 == ((unsigned short int) (((((42286 - var_1_7)) > (0)) ? ((42286 - var_1_7)) : (0))))) : (var_1_6 == ((unsigned short int) var_1_7)))) && (var_1_9 ? (var_1_8 == ((signed long int) ((((var_1_6) < (last_1_var_1_8)) ? (var_1_6) : (last_1_var_1_8))))) : ((var_1_14 > (var_1_4 / var_1_10)) ? ((var_1_7 > var_1_6) ? (var_1_8 == ((signed long int) ((((var_1_4) < (100)) ? (var_1_4) : (100))))) : (var_1_8 == ((signed long int) (last_1_var_1_8 - var_1_7)))) : (var_1_8 == ((signed long int) (var_1_6 + var_1_5)))))) && (var_1_11 == ((signed long int) var_1_12))) && (var_1_13 == ((signed long int) var_1_12))) && (var_1_14 == ((unsigned short int) var_1_7)) ; [L105] RET, EXPR property() [L105] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=-2147483648, var_1_12=-2147483648, var_1_13=-2147483648, var_1_14=-44392, var_1_1=5, var_1_4=3, var_1_5=2, var_1_6=21142, var_1_7=-44392, var_1_8=50, var_1_9=1] [L19] reach_error() VAL [isInitial=1, last_1_var_1_1=2, last_1_var_1_6=128, last_1_var_1_8=50, var_1_10=-2, var_1_11=-2147483648, var_1_12=-2147483648, var_1_13=-2147483648, var_1_14=-44392, var_1_1=5, var_1_4=3, var_1_5=2, var_1_6=21142, var_1_7=-44392, var_1_8=50, var_1_9=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.59ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 106.5MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.48ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 104.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.03ms. Allocated memory is still 142.6MB. Free memory was 104.6MB in the beginning and 103.2MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 659.02ms. Allocated memory is still 142.6MB. Free memory was 103.2MB in the beginning and 72.9MB in the end (delta: 30.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 816.99ms. Allocated memory is still 142.6MB. Free memory was 72.9MB in the beginning and 95.1MB in the end (delta: -22.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 94.9MB in the end (delta: 21.0kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-25 02:45:38,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/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 32bit --witnessprinter.graph.data.programhash 84717a5c2896f013826b4f3140ab30111b65bd200eaa9dc30a2a86e9a93af713 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 02:45:41,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 02:45:41,487 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2024-11-25 02:45:41,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 02:45:41,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 02:45:41,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 02:45:41,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 02:45:41,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 02:45:41,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 02:45:41,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 02:45:41,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 02:45:41,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 02:45:41,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 02:45:41,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 02:45:41,558 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 02:45:41,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 02:45:41,558 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-25 02:45:41,558 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-25 02:45:41,559 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-25 02:45:41,559 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 02:45:41,563 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 02:45:41,563 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 02:45:41,563 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 02:45:41,563 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 02:45:41,563 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 02:45:41,563 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 02:45:41,564 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-11-25 02:45:41,564 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-11-25 02:45:41,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 02:45:41,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:45:41,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 02:45:41,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 02:45:41,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 02:45:41,565 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-25 02:45:41,566 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-25 02:45:41,566 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-11-25 02:45:41,566 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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84717a5c2896f013826b4f3140ab30111b65bd200eaa9dc30a2a86e9a93af713 [2024-11-25 02:45:41,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 02:45:41,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 02:45:41,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 02:45:41,866 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 02:45:41,867 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 02:45:41,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i [2024-11-25 02:45:44,824 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/53b83bea2/dcf8e7160bbb4a52ab4b1ba3da2b53a5/FLAGa2f1f3c62 [2024-11-25 02:45:45,073 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 02:45:45,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i [2024-11-25 02:45:45,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/53b83bea2/dcf8e7160bbb4a52ab4b1ba3da2b53a5/FLAGa2f1f3c62 [2024-11-25 02:45:45,120 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/data/53b83bea2/dcf8e7160bbb4a52ab4b1ba3da2b53a5 [2024-11-25 02:45:45,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 02:45:45,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 02:45:45,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 02:45:45,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 02:45:45,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 02:45:45,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5b108d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45, skipping insertion in model container [2024-11-25 02:45:45,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 02:45:45,330 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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i[916,929] [2024-11-25 02:45:45,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:45:45,412 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 02:45:45,423 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_cc00d4ea-8a26-4835-84aa-0f822b752ce7/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-67.i[916,929] [2024-11-25 02:45:45,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 02:45:45,491 INFO L204 MainTranslator]: Completed translation [2024-11-25 02:45:45,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45 WrapperNode [2024-11-25 02:45:45,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 02:45:45,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 02:45:45,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 02:45:45,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 02:45:45,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,551 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2024-11-25 02:45:45,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 02:45:45,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 02:45:45,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 02:45:45,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 02:45:45,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,567 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,579 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 02:45:45,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 02:45:45,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 02:45:45,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 02:45:45,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 02:45:45" (1/1) ... [2024-11-25 02:45:45,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 02:45:45,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 02:45:45,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 02:45:45,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 02:45:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 02:45:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-25 02:45:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-25 02:45:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-25 02:45:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 02:45:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 02:45:45,755 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 02:45:45,758 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 02:45:46,081 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-25 02:45:46,081 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 02:45:46,219 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 02:45:46,219 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-25 02:45:46,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:45:46 BoogieIcfgContainer [2024-11-25 02:45:46,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 02:45:46,220 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 02:45:46,220 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 02:45:46,230 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 02:45:46,230 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 02:45:46" (1/1) ... [2024-11-25 02:45:46,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 02:45:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 02:45:46,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 28 states and 41 transitions. [2024-11-25 02:45:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2024-11-25 02:45:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-25 02:45:46,305 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 02:45:46,306 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-25 02:45:46,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/cvc4 [2024-11-25 02:45:46,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-25 02:45:46,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc00d4ea-8a26-4835-84aa-0f822b752ce7/bin/ukojak-verify-ENZ3QT5qd3/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-25 02:45:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 02:45:46,617 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-25 02:45:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 02:45:46,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-25 02:45:46,719 INFO L279 TraceCheckSpWp]: Computing forward predicates...