./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/egcd.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/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_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/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_6909e338-6aeb-4ab5-8536-c5942f694224/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 01ca8c8e30ceefcd4f6e4832a31edd1224d925e8551df750bd60cc922035a838 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:27:00,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:27:00,884 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-19 03:27:00,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:27:00,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:27:00,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:27:00,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:27:00,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:27:00,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:27:00,973 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:27:00,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:27:00,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:27:00,975 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:27:00,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:27:00,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:27:00,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:27:00,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:27:00,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:27:00,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:27:00,981 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:27:00,982 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:27:00,982 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:27:00,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:27:00,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:27:00,986 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:27:00,987 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:27:00,987 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:27:00,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:27:00,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:27:00,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:27:00,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:27:00,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:27:00,992 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:27:00,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:27:00,993 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:27:00,994 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_6909e338-6aeb-4ab5-8536-c5942f694224/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ca8c8e30ceefcd4f6e4832a31edd1224d925e8551df750bd60cc922035a838 [2023-11-19 03:27:01,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:27:01,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:27:01,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:27:01,470 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:27:01,470 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:27:01,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/nla-digbench/egcd.c [2023-11-19 03:27:04,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:27:04,941 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:27:04,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/sv-benchmarks/c/nla-digbench/egcd.c [2023-11-19 03:27:04,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/data/86825877b/da1ba3a4dcbc45ec9f2c5d25baf78766/FLAGa0dd39202 [2023-11-19 03:27:04,967 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/data/86825877b/da1ba3a4dcbc45ec9f2c5d25baf78766 [2023-11-19 03:27:04,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:27:04,971 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:27:04,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:27:04,973 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:27:04,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:27:04,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:27:04" (1/1) ... [2023-11-19 03:27:04,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297ba71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:04, skipping insertion in model container [2023-11-19 03:27:04,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:27:04" (1/1) ... [2023-11-19 03:27:05,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:27:05,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:27:05,223 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:27:05,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:27:05,263 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:27:05,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05 WrapperNode [2023-11-19 03:27:05,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:27:05,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:27:05,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:27:05,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:27:05,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,316 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2023-11-19 03:27:05,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:27:05,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:27:05,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:27:05,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:27:05,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:27:05,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:27:05,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:27:05,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:27:05,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:05,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:27:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:27:05,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:27:05,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6909e338-6aeb-4ab5-8536-c5942f694224/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:27:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:27:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 03:27:05,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 03:27:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:27:05,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:27:05,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:27:05,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 03:27:05,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 03:27:05,508 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:27:05,510 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:27:05,949 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:27:05,992 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:27:05,992 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 03:27:05,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:27:05 BoogieIcfgContainer [2023-11-19 03:27:05,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:27:05,999 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:27:06,000 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:27:06,009 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:27:06,009 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:27:05" (1/1) ... [2023-11-19 03:27:06,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:27:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 132 states and 141 transitions. [2023-11-19 03:27:06,085 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 141 transitions. [2023-11-19 03:27:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:27:06,089 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 132 states and 140 transitions. [2023-11-19 03:27:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 140 transitions. [2023-11-19 03:27:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:27:06,382 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:06,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:06,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 03:27:06,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 134 states and 144 transitions. [2023-11-19 03:27:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2023-11-19 03:27:06,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:27:06,566 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:06,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:06,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 03:27:06,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 135 states and 145 transitions. [2023-11-19 03:27:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2023-11-19 03:27:06,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 03:27:06,714 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:06,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:06,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:06,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 139 states and 152 transitions. [2023-11-19 03:27:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2023-11-19 03:27:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 03:27:06,915 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:06,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:06,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:06,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 140 states and 153 transitions. [2023-11-19 03:27:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2023-11-19 03:27:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 03:27:06,995 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:07,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 03:27:07,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 143 states and 156 transitions. [2023-11-19 03:27:07,155 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2023-11-19 03:27:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 03:27:07,156 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:07,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:07,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 03:27:07,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:07,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 144 states and 157 transitions. [2023-11-19 03:27:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 157 transitions. [2023-11-19 03:27:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 03:27:07,292 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:07,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:07,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 153 states and 170 transitions. [2023-11-19 03:27:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2023-11-19 03:27:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 03:27:07,600 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:07,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:07,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 154 states and 171 transitions. [2023-11-19 03:27:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 171 transitions. [2023-11-19 03:27:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 03:27:07,685 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:07,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:07,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:08,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 165 states and 187 transitions. [2023-11-19 03:27:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2023-11-19 03:27:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 03:27:08,290 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:08,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:08,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:08,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 177 states and 204 transitions. [2023-11-19 03:27:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 204 transitions. [2023-11-19 03:27:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 03:27:09,201 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:09,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:09,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:09,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 180 states and 208 transitions. [2023-11-19 03:27:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 208 transitions. [2023-11-19 03:27:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 03:27:09,631 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:09,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:09,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:27:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 181 states and 209 transitions. [2023-11-19 03:27:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 209 transitions. [2023-11-19 03:27:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 03:27:10,151 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:10,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:10,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 03:27:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 190 states and 223 transitions. [2023-11-19 03:27:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 223 transitions. [2023-11-19 03:27:10,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 03:27:10,866 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:10,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:10,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:10,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 03:27:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:10,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 191 states and 224 transitions. [2023-11-19 03:27:10,965 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 224 transitions. [2023-11-19 03:27:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 03:27:10,967 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:10,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:11,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 03:27:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 209 states and 249 transitions. [2023-11-19 03:27:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 249 transitions. [2023-11-19 03:27:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 03:27:12,343 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:12,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:12,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 03:27:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:13,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 228 states and 275 transitions. [2023-11-19 03:27:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 275 transitions. [2023-11-19 03:27:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 03:27:13,866 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:13,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:13,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 03:27:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 231 states and 279 transitions. [2023-11-19 03:27:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 279 transitions. [2023-11-19 03:27:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 03:27:14,269 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:14,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 03:27:14,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 03:27:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 232 states and 280 transitions. [2023-11-19 03:27:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 280 transitions. [2023-11-19 03:27:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 03:27:14,875 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:14,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:14,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:14,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:14,958 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 03:27:15,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 231 states and 279 transitions. [2023-11-19 03:27:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 279 transitions. [2023-11-19 03:27:15,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 03:27:15,027 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:15,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:15,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:15,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:15,108 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 03:27:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 230 states and 278 transitions. [2023-11-19 03:27:15,271 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 278 transitions. [2023-11-19 03:27:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 03:27:15,271 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:15,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:15,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:15,309 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 03:27:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 229 states and 277 transitions. [2023-11-19 03:27:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 277 transitions. [2023-11-19 03:27:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 03:27:15,334 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:15,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:15,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:15,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:15,366 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 03:27:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:15,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 228 states and 276 transitions. [2023-11-19 03:27:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 276 transitions. [2023-11-19 03:27:15,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 03:27:15,391 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:15,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:15,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 03:27:15,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 03:27:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 254 states and 313 transitions. [2023-11-19 03:27:18,445 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 313 transitions. [2023-11-19 03:27:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 03:27:18,446 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:18,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:18,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 03:27:18,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 03:27:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 280 states and 348 transitions. [2023-11-19 03:27:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 348 transitions. [2023-11-19 03:27:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 03:27:21,819 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:21,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:21,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:22,034 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 03:27:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 295 states and 372 transitions. [2023-11-19 03:27:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 372 transitions. [2023-11-19 03:27:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 03:27:24,689 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:24,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:24,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:24,893 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 03:27:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 310 states and 395 transitions. [2023-11-19 03:27:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 395 transitions. [2023-11-19 03:27:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 03:27:27,852 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:27,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:27,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 03:27:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 323 states and 416 transitions. [2023-11-19 03:27:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 416 transitions. [2023-11-19 03:27:30,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 03:27:30,461 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:30,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:30,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:30,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:30,622 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 03:27:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 327 states and 422 transitions. [2023-11-19 03:27:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 422 transitions. [2023-11-19 03:27:31,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 03:27:31,604 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:31,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:31,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:31,750 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 03:27:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 331 states and 428 transitions. [2023-11-19 03:27:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 428 transitions. [2023-11-19 03:27:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 03:27:32,588 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:32,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:32,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:32,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 03:27:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 345 states and 450 transitions. [2023-11-19 03:27:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 450 transitions. [2023-11-19 03:27:36,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 03:27:36,149 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:36,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:36,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:36,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:36,404 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 03:27:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 360 states and 476 transitions. [2023-11-19 03:27:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 476 transitions. [2023-11-19 03:27:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 03:27:40,427 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:40,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:40,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:40,689 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 03:27:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 375 states and 501 transitions. [2023-11-19 03:27:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 501 transitions. [2023-11-19 03:27:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 03:27:44,498 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:44,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:44,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:44,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 03:27:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 381 states and 512 transitions. [2023-11-19 03:27:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 512 transitions. [2023-11-19 03:27:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 03:27:47,016 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:47,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:47,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:47,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:47,138 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 03:27:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 387 states and 523 transitions. [2023-11-19 03:27:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 523 transitions. [2023-11-19 03:27:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 03:27:49,055 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:49,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 03:27:49,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:49,189 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 03:27:50,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 393 states and 535 transitions. [2023-11-19 03:27:50,834 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 535 transitions. [2023-11-19 03:27:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 03:27:50,834 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:50,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:50,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:50,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:51,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 03:27:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 400 states and 547 transitions. [2023-11-19 03:27:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 547 transitions. [2023-11-19 03:27:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 03:27:54,880 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:54,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 03:27:54,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 03:27:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.