./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3bd5e04188199017a119b2ef3a434e2cfadf1e2e5bbf4182b28eb1a822c186f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:03:48,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:03:48,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:03:48,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:03:48,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:03:48,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:03:48,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:03:48,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:03:48,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:03:48,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:03:48,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:03:48,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:03:48,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:03:48,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:03:48,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:03:48,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:03:48,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:03:48,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:03:48,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:03:48,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:03:48,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:03:48,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:03:48,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:03:48,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:03:48,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:03:48,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:03:48,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:03:48,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:03:48,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:03:48,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:03:48,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:03:48,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:03:48,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:03:48,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:03:48,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:03:48,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:03:48,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:03:48,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:03:48,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:03:48,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:03:48,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:03:48,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-10-17 17:03:48,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:03:48,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:03:48,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:03:48,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:03:48,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:03:48,594 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:03:48,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:03:48,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:03:48,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:03:48,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:03:48,596 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:03:48,596 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:03:48,596 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:03:48,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:03:48,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:03:48,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:03:48,597 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 17:03:48,597 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 17:03:48,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:03:48,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:03:48,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:03:48,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:03:48,599 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 17:03:48,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:03:48,599 INFO L138 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_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3bd5e04188199017a119b2ef3a434e2cfadf1e2e5bbf4182b28eb1a822c186f [2022-10-17 17:03:48,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:03:48,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:03:48,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:03:48,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:03:48,934 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:03:48,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/memsafety/lockfree-3.1.i [2022-10-17 17:03:49,009 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/data/496fecfef/e1ae9b8bd24d4bdd9d3424c17f6424e0/FLAGd875cd6a7 [2022-10-17 17:03:49,548 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:03:49,549 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/sv-benchmarks/c/memsafety/lockfree-3.1.i [2022-10-17 17:03:49,573 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/data/496fecfef/e1ae9b8bd24d4bdd9d3424c17f6424e0/FLAGd875cd6a7 [2022-10-17 17:03:49,884 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/data/496fecfef/e1ae9b8bd24d4bdd9d3424c17f6424e0 [2022-10-17 17:03:49,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:03:49,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:03:49,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:03:49,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:03:49,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:03:49,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:03:49" (1/1) ... [2022-10-17 17:03:49,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a6fa69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:49, skipping insertion in model container [2022-10-17 17:03:49,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:03:49" (1/1) ... [2022-10-17 17:03:49,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:03:49,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:03:50,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:03:50,358 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:03:50,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:03:50,440 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:03:50,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50 WrapperNode [2022-10-17 17:03:50,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:03:50,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:03:50,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:03:50,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:03:50,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,501 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2022-10-17 17:03:50,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:03:50,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:03:50,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:03:50,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:03:50,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,555 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:03:50,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:03:50,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:03:50,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:03:50,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:50" (1/1) ... [2022-10-17 17:03:50,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:03:50,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 17:03:50,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 17:03:50,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69bd2241-6993-44cd-a752-04d6865831b8/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 17:03:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:03:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:03:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:03:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:03:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:03:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:03:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:03:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:03:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:03:50,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:03:50,758 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:03:50,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:03:51,188 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:03:51,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:03:51,297 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:03:51,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:03:51 BoogieIcfgContainer [2022-10-17 17:03:51,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:03:51,317 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 17:03:51,317 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 17:03:51,334 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 17:03:51,334 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:03:51" (1/1) ... [2022-10-17 17:03:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:03:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 49 states and 61 transitions. [2022-10-17 17:03:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2022-10-17 17:03:51,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:03:51,405 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:51,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 49 states and 60 transitions. [2022-10-17 17:03:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2022-10-17 17:03:51,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:03:51,617 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:51,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 53 states and 68 transitions. [2022-10-17 17:03:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-10-17 17:03:51,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:03:51,792 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:51,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 56 states and 74 transitions. [2022-10-17 17:03:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2022-10-17 17:03:51,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:03:51,993 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:51,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 55 states and 73 transitions. [2022-10-17 17:03:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2022-10-17 17:03:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:03:52,161 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:52,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:52,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 54 states and 72 transitions. [2022-10-17 17:03:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2022-10-17 17:03:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:03:52,428 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:52,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 59 states and 84 transitions. [2022-10-17 17:03:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2022-10-17 17:03:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:03:52,708 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:52,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 58 states and 83 transitions. [2022-10-17 17:03:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 83 transitions. [2022-10-17 17:03:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:03:52,757 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:52,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 57 states and 82 transitions. [2022-10-17 17:03:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2022-10-17 17:03:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:03:53,140 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 61 states and 92 transitions. [2022-10-17 17:03:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 92 transitions. [2022-10-17 17:03:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:03:53,605 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 61 states and 91 transitions. [2022-10-17 17:03:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2022-10-17 17:03:53,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:03:53,805 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:03:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 64 states and 100 transitions. [2022-10-17 17:03:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 100 transitions. [2022-10-17 17:03:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:03:54,088 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:03:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 67 states and 109 transitions. [2022-10-17 17:03:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 109 transitions. [2022-10-17 17:03:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:03:54,360 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:54,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:03:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 71 states and 120 transitions. [2022-10-17 17:03:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 120 transitions. [2022-10-17 17:03:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:03:54,786 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:55,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:55,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 76 states and 133 transitions. [2022-10-17 17:03:55,871 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 133 transitions. [2022-10-17 17:03:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:03:55,872 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:55,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:03:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 78 states and 139 transitions. [2022-10-17 17:03:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 139 transitions. [2022-10-17 17:03:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:03:56,108 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 85 states and 162 transitions. [2022-10-17 17:03:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 162 transitions. [2022-10-17 17:03:57,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:03:57,326 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 92 states and 189 transitions. [2022-10-17 17:03:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 189 transitions. [2022-10-17 17:03:58,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:03:58,559 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 99 states and 218 transitions. [2022-10-17 17:04:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 218 transitions. [2022-10-17 17:04:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:04:00,472 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 101 states and 225 transitions. [2022-10-17 17:04:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 225 transitions. [2022-10-17 17:04:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:04:01,088 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:01,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 103 states and 229 transitions. [2022-10-17 17:04:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 229 transitions. [2022-10-17 17:04:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:04:01,416 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:04:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:03,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 109 states and 246 transitions. [2022-10-17 17:04:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 246 transitions. [2022-10-17 17:04:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:04:03,024 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:04:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:03,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 112 states and 253 transitions. [2022-10-17 17:04:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 253 transitions. [2022-10-17 17:04:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:04:03,697 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:03,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 115 states and 261 transitions. [2022-10-17 17:04:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 261 transitions. [2022-10-17 17:04:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:04:03,775 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:03,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 119 states and 269 transitions. [2022-10-17 17:04:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 269 transitions. [2022-10-17 17:04:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:04:04,074 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:04,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 128 states and 305 transitions. [2022-10-17 17:04:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 305 transitions. [2022-10-17 17:04:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:04:05,558 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 136 states and 338 transitions. [2022-10-17 17:04:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 338 transitions. [2022-10-17 17:04:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:04:07,433 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 139 states and 348 transitions. [2022-10-17 17:04:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 348 transitions. [2022-10-17 17:04:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:04:08,339 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:08,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 142 states and 355 transitions. [2022-10-17 17:04:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2022-10-17 17:04:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:04:09,154 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 17:04:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 143 states and 358 transitions. [2022-10-17 17:04:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 358 transitions. [2022-10-17 17:04:09,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:04:09,598 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:04:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 147 states and 381 transitions. [2022-10-17 17:04:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 381 transitions. [2022-10-17 17:04:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:04:10,692 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:04:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 150 states and 387 transitions. [2022-10-17 17:04:11,405 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 387 transitions. [2022-10-17 17:04:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:04:11,406 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:11,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:04:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 151 states and 390 transitions. [2022-10-17 17:04:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 390 transitions. [2022-10-17 17:04:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:04:11,824 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:11,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 17:04:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 154 states and 395 transitions. [2022-10-17 17:04:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 395 transitions. [2022-10-17 17:04:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:04:12,929 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:12,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:12,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 156 states and 399 transitions. [2022-10-17 17:04:12,994 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 399 transitions. [2022-10-17 17:04:12,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:04:12,995 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:12,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 158 states and 401 transitions. [2022-10-17 17:04:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 401 transitions. [2022-10-17 17:04:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:04:13,060 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 17:04:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 160 states and 403 transitions. [2022-10-17 17:04:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 403 transitions. [2022-10-17 17:04:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:04:13,808 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:13,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:04:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 162 states and 410 transitions. [2022-10-17 17:04:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 410 transitions. [2022-10-17 17:04:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:04:16,030 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:04:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 163 states and 428 transitions. [2022-10-17 17:04:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 428 transitions. [2022-10-17 17:04:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:04:17,020 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 166 states and 434 transitions. [2022-10-17 17:04:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 434 transitions. [2022-10-17 17:04:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:04:18,404 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:18,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 167 states and 437 transitions. [2022-10-17 17:04:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 437 transitions. [2022-10-17 17:04:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:04:18,986 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:19,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:19,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 169 states and 439 transitions. [2022-10-17 17:04:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 439 transitions. [2022-10-17 17:04:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:04:19,464 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 17:04:20,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 171 states and 441 transitions. [2022-10-17 17:04:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 441 transitions. [2022-10-17 17:04:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 17:04:20,430 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:20,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.