./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9 --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 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:52:37,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:52:37,282 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-12-03 03:52:37,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 03:52:37,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 03:52:37,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:52:37,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 03:52:37,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 03:52:37,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:52:37,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:52:37,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:52:37,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 03:52:37,311 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 03:52:37,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 03:52:37,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 03:52:37,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:52:37,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 03:52:37,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:52:37,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 03:52:37,315 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 03:52:37,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 03:52:37,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:52:37,316 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:52:37,317 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:52:37,317 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:52:37,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:52:37,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:52:37,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:52:37,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:52:37,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 03:52:37,320 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 03:52:37,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 03:52:37,321 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 03:52:37,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a [2023-12-03 03:52:37,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:52:37,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:52:37,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:52:37,588 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:52:37,589 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:52:37,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2023-12-03 03:52:40,398 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:52:40,559 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:52:40,560 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2023-12-03 03:52:40,568 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data/0efb175b0/788c15d07f1b453685c53782940a8df2/FLAG4987e6938 [2023-12-03 03:52:40,580 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data/0efb175b0/788c15d07f1b453685c53782940a8df2 [2023-12-03 03:52:40,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:52:40,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:52:40,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:52:40,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:52:40,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:52:40,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b6dbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40, skipping insertion in model container [2023-12-03 03:52:40,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:52:40,760 WARN L240 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_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i[915,928] [2023-12-03 03:52:40,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:52:40,808 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:52:40,820 WARN L240 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_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i[915,928] [2023-12-03 03:52:40,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:52:40,856 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:52:40,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40 WrapperNode [2023-12-03 03:52:40,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:52:40,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:52:40,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:52:40,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:52:40,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,900 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 115 [2023-12-03 03:52:40,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:52:40,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:52:40,901 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:52:40,901 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:52:40,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:52:40,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:52:40,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:52:40,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:52:40,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:40" (1/1) ... [2023-12-03 03:52:40,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:52:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:52:40,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:52:40,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:52:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:52:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-03 03:52:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-03 03:52:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 03:52:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:52:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:52:41,077 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:52:41,079 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:52:41,304 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:52:41,491 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:52:41,491 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 03:52:41,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:52:41 BoogieIcfgContainer [2023-12-03 03:52:41,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:52:41,494 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:52:41,494 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:52:41,504 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:52:41,505 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:52:41" (1/1) ... [2023-12-03 03:52:41,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:52:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:52:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 44 transitions. [2023-12-03 03:52:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2023-12-03 03:52:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-03 03:52:41,579 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:52:41,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:52:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:52:41,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 03:52:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:52:42,024 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-03 03:52:42,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 03:52:42 ImpRootNode [2023-12-03 03:52:42,079 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 03:52:42,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 03:52:42,080 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 03:52:42,080 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 03:52:42,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:52:41" (3/4) ... [2023-12-03 03:52:42,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 03:52:42,084 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 03:52:42,085 INFO L158 Benchmark]: Toolchain (without parser) took 1502.38ms. Allocated memory was 190.8MB in the beginning and 308.3MB in the end (delta: 117.4MB). Free memory was 148.5MB in the beginning and 271.0MB in the end (delta: -122.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:52:42,086 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 190.8MB. Free memory was 154.3MB in the beginning and 154.2MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:52:42,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.31ms. Allocated memory is still 190.8MB. Free memory was 148.1MB in the beginning and 136.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-03 03:52:42,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.66ms. Allocated memory is still 190.8MB. Free memory was 136.3MB in the beginning and 134.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 03:52:42,088 INFO L158 Benchmark]: Boogie Preprocessor took 24.08ms. Allocated memory is still 190.8MB. Free memory was 134.2MB in the beginning and 132.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:52:42,088 INFO L158 Benchmark]: RCFGBuilder took 567.37ms. Allocated memory is still 190.8MB. Free memory was 132.8MB in the beginning and 98.2MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-12-03 03:52:42,089 INFO L158 Benchmark]: CodeCheck took 585.49ms. Allocated memory was 190.8MB in the beginning and 308.3MB in the end (delta: 117.4MB). Free memory was 98.2MB in the beginning and 271.0MB in the end (delta: -172.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:52:42,090 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 308.3MB. Free memory is still 271.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:52:42,093 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 53 NumberOfCodeBlocks, 53 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 - 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 someBinaryFLOATComparisonOperation at line 93, overapproximation of shiftRight at line 52. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned long int var_1_1 = 1; [L23] unsigned char var_1_2 = 0; [L24] unsigned long int var_1_3 = 3164414017; [L25] unsigned long int var_1_4 = 128; [L26] signed char var_1_5 = -128; [L27] signed char var_1_6 = 10; [L28] signed char var_1_7 = 50; [L29] float var_1_8 = 5.1; [L30] float var_1_9 = 63.75; [L31] signed char var_1_10 = 100; [L32] signed long int var_1_12 = 5; [L33] signed char last_1_var_1_10 = 100; [L97] isInitial = 1 [L98] FCALL initially() [L99] COND TRUE 1 [L100] CALL updateLastVariables() [L90] last_1_var_1_10 = var_1_10 [L100] RET updateLastVariables() [L101] CALL updateVariables() [L67] var_1_2 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L69] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=3164414017, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L70] var_1_3 = __VERIFIER_nondet_ulong() [L71] CALL assume_abort_if_not(var_1_3 >= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_3 >= 2147483647) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L72] CALL assume_abort_if_not(var_1_3 <= 4294967294) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_3 <= 4294967294) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=128, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L73] var_1_4 = __VERIFIER_nondet_ulong() [L74] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L75] CALL assume_abort_if_not(var_1_4 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_4 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=10, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L76] var_1_6 = __VERIFIER_nondet_char() [L77] CALL assume_abort_if_not(var_1_6 >= -126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_6 >= -126) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L78] CALL assume_abort_if_not(var_1_6 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_6 <= 126) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=50, var_1_8=51/10, var_1_9=255/4] [L79] var_1_7 = __VERIFIER_nondet_char() [L80] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10, var_1_9=255/4] [L81] CALL assume_abort_if_not(var_1_7 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10, var_1_9=255/4] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_7 <= 126) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10, var_1_9=255/4] [L82] var_1_9 = __VERIFIER_nondet_float() [L83] CALL assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not((var_1_9 >= -922337.2036854765600e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854765600e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=5, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L84] var_1_12 = __VERIFIER_nondet_long() [L85] CALL assume_abort_if_not(var_1_12 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not(var_1_12 >= -2147483648) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L86] CALL assume_abort_if_not(var_1_12 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(var_1_12 <= 2147483647) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L87] CALL assume_abort_if_not(var_1_12 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(var_1_12 != 0) VAL [isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=1, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-128, var_1_6=5, var_1_7=0, var_1_8=51/10] [L101] RET updateVariables() [L102] CALL step() [L37] COND TRUE \read(var_1_2) [L38] var_1_1 = ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))) [L40] signed long int stepLocal_1 = -8; [L41] unsigned long int stepLocal_0 = var_1_1; [L42] COND FALSE !(stepLocal_1 < var_1_4) [L49] var_1_5 = -2 [L51] unsigned long int stepLocal_3 = var_1_1; [L52] EXPR var_1_4 >> var_1_3 [L52] unsigned long int stepLocal_2 = var_1_4 >> var_1_3; [L53] COND FALSE !(var_1_6 >= stepLocal_2) [L58] COND FALSE !((var_1_1 + (var_1_6 / var_1_12)) < var_1_1) [L102] RET step() [L103] CALL, EXPR property() [L93] EXPR ((var_1_2 ? (var_1_1 == ((unsigned long int) ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))))) : 1) && ((-8 < var_1_4) ? ((var_1_4 != var_1_1) ? (var_1_5 == ((signed char) (((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))) - var_1_7))) : (var_1_5 == ((signed char) var_1_6))) : (var_1_5 == ((signed char) -2)))) && ((var_1_6 >= (var_1_4 >> var_1_3)) ? ((var_1_6 != var_1_1) ? (var_1_8 == ((float) var_1_9)) : 1) : 1) [L93] EXPR var_1_4 >> var_1_3 [L93] EXPR ((var_1_2 ? (var_1_1 == ((unsigned long int) ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))))) : 1) && ((-8 < var_1_4) ? ((var_1_4 != var_1_1) ? (var_1_5 == ((signed char) (((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))) - var_1_7))) : (var_1_5 == ((signed char) var_1_6))) : (var_1_5 == ((signed char) -2)))) && ((var_1_6 >= (var_1_4 >> var_1_3)) ? ((var_1_6 != var_1_1) ? (var_1_8 == ((float) var_1_9)) : 1) : 1) [L93-L94] return (((var_1_2 ? (var_1_1 == ((unsigned long int) ((((var_1_3 - var_1_4) < 0 ) ? -(var_1_3 - var_1_4) : (var_1_3 - var_1_4))))) : 1) && ((-8 < var_1_4) ? ((var_1_4 != var_1_1) ? (var_1_5 == ((signed char) (((((var_1_6) < 0 ) ? -(var_1_6) : (var_1_6))) - var_1_7))) : (var_1_5 == ((signed char) var_1_6))) : (var_1_5 == ((signed char) -2)))) && ((var_1_6 >= (var_1_4 >> var_1_3)) ? ((var_1_6 != var_1_1) ? (var_1_8 == ((float) var_1_9)) : 1) : 1)) && (((var_1_1 + (var_1_6 / var_1_12)) < var_1_1) ? ((var_1_7 >= last_1_var_1_10) ? (var_1_10 == ((signed char) -32)) : (var_1_10 == ((signed char) var_1_7))) : 1) ; [L103] RET, EXPR property() [L103] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=4, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-2, var_1_6=5, var_1_7=0, var_1_8=51/10, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=100, var_1_10=100, var_1_12=2, var_1_1=4, var_1_2=1, var_1_3=2147483651, var_1_4=2147483647, var_1_5=-2, var_1_6=5, var_1_7=0, var_1_8=51/10, var_1_9=0] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 190.8MB. Free memory was 154.3MB in the beginning and 154.2MB in the end (delta: 28.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.31ms. Allocated memory is still 190.8MB. Free memory was 148.1MB in the beginning and 136.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.66ms. Allocated memory is still 190.8MB. Free memory was 136.3MB in the beginning and 134.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.08ms. Allocated memory is still 190.8MB. Free memory was 134.2MB in the beginning and 132.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 567.37ms. Allocated memory is still 190.8MB. Free memory was 132.8MB in the beginning and 98.2MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * CodeCheck took 585.49ms. Allocated memory was 190.8MB in the beginning and 308.3MB in the end (delta: 117.4MB). Free memory was 98.2MB in the beginning and 271.0MB in the end (delta: -172.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 308.3MB. Free memory is still 271.0MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-03 03:52:42,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9 --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 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:52:44,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:52:44,102 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2023-12-03 03:52:44,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:52:44,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 03:52:44,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 03:52:44,137 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:52:44,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:52:44,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:52:44,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 03:52:44,139 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 03:52:44,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 03:52:44,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:52:44,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 03:52:44,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:52:44,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 03:52:44,142 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-03 03:52:44,143 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-03 03:52:44,143 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-03 03:52:44,144 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 03:52:44,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 03:52:44,145 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:52:44,145 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:52:44,146 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:52:44,146 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:52:44,146 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 03:52:44,147 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-03 03:52:44,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:52:44,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:52:44,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:52:44,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:52:44,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 03:52:44,150 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-03 03:52:44,150 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 03:52:44,150 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 03:52:44,151 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-03 03:52:44,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-03 03:52:44,151 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57aa769afed4a061f728787b55a05b2a082848f9dc6ce06d34092eb1dbdd7a2a [2023-12-03 03:52:44,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:52:44,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:52:44,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:52:44,487 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:52:44,487 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:52:44,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2023-12-03 03:52:47,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:52:47,503 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:52:47,503 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i [2023-12-03 03:52:47,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data/a9d3519aa/97847911d26943c9a00978690e90294c/FLAG81129d8fd [2023-12-03 03:52:47,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/data/a9d3519aa/97847911d26943c9a00978690e90294c [2023-12-03 03:52:47,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:52:47,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:52:47,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:52:47,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:52:47,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:52:47,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4497b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47, skipping insertion in model container [2023-12-03 03:52:47,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,556 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:52:47,700 WARN L240 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_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i[915,928] [2023-12-03 03:52:47,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:52:47,749 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:52:47,762 WARN L240 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_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-87.i[915,928] [2023-12-03 03:52:47,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:52:47,803 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:52:47,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47 WrapperNode [2023-12-03 03:52:47,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:52:47,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:52:47,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:52:47,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:52:47,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,849 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-12-03 03:52:47,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:52:47,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:52:47,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:52:47,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:52:47,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:52:47,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:52:47,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:52:47,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:52:47,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:52:47" (1/1) ... [2023-12-03 03:52:47,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:52:47,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:52:47,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:52:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:52:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:52:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-03 03:52:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-03 03:52:47,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-03 03:52:47,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:52:47,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:52:48,043 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:52:48,046 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:52:48,348 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:52:48,496 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:52:48,496 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 03:52:48,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:52:48 BoogieIcfgContainer [2023-12-03 03:52:48,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:52:48,499 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:52:48,499 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:52:48,508 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:52:48,509 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:52:48" (1/1) ... [2023-12-03 03:52:48,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:52:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:52:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 30 states and 44 transitions. [2023-12-03 03:52:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2023-12-03 03:52:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-03 03:52:48,579 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:52:48,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:52:48,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:52:48,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:52:48,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fb3d80f-a6f9-4ebf-aecb-66ea0ebe439d/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-03 03:52:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:52:49,047 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 03:52:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:52:49,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-03 03:52:49,135 INFO L285 TraceCheckSpWp]: Computing forward predicates...