./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6a7b66d62d8261743d542694624b328b551f76289ee08b3039b7ca01c3c317e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:02:54,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:02:55,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-19 04:02:55,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:02:55,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 04:02:55,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:02:55,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:02:55,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:02:55,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:02:55,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:02:55,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:02:55,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:02:55,180 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:02:55,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:02:55,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:02:55,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:02:55,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:02:55,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:02:55,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:02:55,184 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:02:55,184 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:02:55,185 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:02:55,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:02:55,186 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:02:55,186 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:02:55,187 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:02:55,187 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:02:55,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:02:55,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:55,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:02:55,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:02:55,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:02:55,190 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 04:02:55,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:02:55,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:02:55,191 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_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a7b66d62d8261743d542694624b328b551f76289ee08b3039b7ca01c3c317e [2023-11-19 04:02:55,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:02:55,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:02:55,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:02:55,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:02:55,576 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:02:55,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c [2023-11-19 04:02:58,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:02:59,161 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:02:59,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c [2023-11-19 04:02:59,174 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/data/f3bdc5ad3/72c8d81adb8747489c6e64ec59cc8ca7/FLAG985107c8f [2023-11-19 04:02:59,202 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/data/f3bdc5ad3/72c8d81adb8747489c6e64ec59cc8ca7 [2023-11-19 04:02:59,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:02:59,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:02:59,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:59,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:02:59,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:02:59,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259e4aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59, skipping insertion in model container [2023-11-19 04:02:59,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,260 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:02:59,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:59,532 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:02:59,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:59,574 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:02:59,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59 WrapperNode [2023-11-19 04:02:59,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:59,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:59,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:02:59,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:02:59,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,627 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-11-19 04:02:59,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:59,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:02:59,628 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:02:59,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:02:59,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:02:59,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:02:59,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:02:59,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:02:59,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:59" (1/1) ... [2023-11-19 04:02:59,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:02:59,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:02:59,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bedf4f95-5c75-454e-88be-426edcea229b/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:02:59,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:02:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:02:59,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:02:59,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:02:59,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:02:59,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:02:59,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:02:59,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:02:59,837 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:02:59,840 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:03:00,334 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:03:00,393 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:03:00,394 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:03:00,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:03:00 BoogieIcfgContainer [2023-11-19 04:03:00,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:03:00,401 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:03:00,402 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:03:00,411 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:03:00,411 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:03:00" (1/1) ... [2023-11-19 04:03:00,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:03:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:00,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 104 states and 112 transitions. [2023-11-19 04:03:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2023-11-19 04:03:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:03:00,499 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:00,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:00,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:03:00,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:03:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 106 states and 117 transitions. [2023-11-19 04:03:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2023-11-19 04:03:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:03:01,020 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:01,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:01,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 04:03:01,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 109 states and 125 transitions. [2023-11-19 04:03:01,646 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2023-11-19 04:03:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:03:01,647 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:01,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:01,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 04:03:01,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:03:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 113 states and 134 transitions. [2023-11-19 04:03:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2023-11-19 04:03:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:03:02,069 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:02,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:03:02,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 118 states and 144 transitions. [2023-11-19 04:03:02,971 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2023-11-19 04:03:02,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 04:03:02,972 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:03,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:03:03,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:04,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 124 states and 156 transitions. [2023-11-19 04:03:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 156 transitions. [2023-11-19 04:03:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:03:04,056 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:04,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:03:04,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 131 states and 170 transitions. [2023-11-19 04:03:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 170 transitions. [2023-11-19 04:03:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 04:03:05,704 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:05,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:05,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:03:05,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:03:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 139 states and 186 transitions. [2023-11-19 04:03:07,659 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2023-11-19 04:03:07,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:03:07,660 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:07,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:07,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 04:03:07,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 148 states and 203 transitions. [2023-11-19 04:03:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 203 transitions. [2023-11-19 04:03:09,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 04:03:09,816 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:09,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:09,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:03:09,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 151 states and 208 transitions. [2023-11-19 04:03:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 208 transitions. [2023-11-19 04:03:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:03:10,197 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:10,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:03:10,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 150 states and 207 transitions. [2023-11-19 04:03:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 207 transitions. [2023-11-19 04:03:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:03:10,499 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:10,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:10,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:03:10,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 159 states and 225 transitions. [2023-11-19 04:03:12,831 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 225 transitions. [2023-11-19 04:03:12,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:03:12,832 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:12,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:03:12,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 158 states and 224 transitions. [2023-11-19 04:03:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 224 transitions. [2023-11-19 04:03:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:03:13,039 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:13,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:13,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:03:13,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 169 states and 246 transitions. [2023-11-19 04:03:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 246 transitions. [2023-11-19 04:03:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:03:27,249 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:27,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:27,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:03:27,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 172 states and 250 transitions. [2023-11-19 04:03:27,418 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 250 transitions. [2023-11-19 04:03:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:03:27,426 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:27,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:03:27,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 171 states and 249 transitions. [2023-11-19 04:03:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 249 transitions. [2023-11-19 04:03:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:03:27,772 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:27,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:27,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:03:27,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 174 states and 253 transitions. [2023-11-19 04:03:28,614 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 253 transitions. [2023-11-19 04:03:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 04:03:28,615 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:28,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:03:28,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 185 states and 275 transitions. [2023-11-19 04:03:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 275 transitions. [2023-11-19 04:03:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:03:34,770 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:34,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:34,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:03:34,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:03:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 190 states and 285 transitions. [2023-11-19 04:03:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 285 transitions. [2023-11-19 04:03:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 04:03:50,628 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:50,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:03:50,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:03:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:03:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 193 states and 289 transitions. [2023-11-19 04:03:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 289 transitions. [2023-11-19 04:03:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 04:03:50,814 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:03:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:03:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:03:50,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:03:50,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:03:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.