./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/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_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f80bfa5d5133b0a22059cd1d412c5ee55e27da1e07175dcd83a431b56441bb30 --- 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 16:44:20,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:44:20,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:44:20,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:44:20,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:44:20,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:44:20,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:44:20,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:44:20,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:44:20,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:44:20,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:44:20,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:44:20,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:44:20,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:44:20,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:44:20,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:44:20,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:44:20,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:44:20,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:44:20,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:44:21,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:44:21,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:44:21,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:44:21,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:44:21,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:44:21,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:44:21,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:44:21,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:44:21,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:44:21,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:44:21,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:44:21,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:44:21,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:44:21,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:44:21,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:44:21,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:44:21,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:44:21,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:44:21,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:44:21,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:44:21,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:44:21,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:44:21,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:44:21,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:44:21,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:44:21,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:44:21,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:44:21,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:44:21,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:44:21,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:44:21,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:44:21,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:44:21,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:44:21,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:44:21,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:44:21,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:44:21,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:44:21,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:44:21,070 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:44:21,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:44:21,070 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:44:21,071 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:44:21,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:44:21,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:44:21,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:44:21,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:44:21,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:44:21,073 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:44:21,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:44:21,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:44:21,074 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_cad135a1-3539-444c-957a-f52ba77a7bc4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f80bfa5d5133b0a22059cd1d412c5ee55e27da1e07175dcd83a431b56441bb30 [2022-10-17 16:44:21,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:44:21,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:44:21,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:44:21,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:44:21,484 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:44:21,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-10-17 16:44:21,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/data/765e360ff/da6d2a210db34f548bbd17fcfc697c5c/FLAGbe1798126 [2022-10-17 16:44:22,347 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:44:22,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-10-17 16:44:22,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/data/765e360ff/da6d2a210db34f548bbd17fcfc697c5c/FLAGbe1798126 [2022-10-17 16:44:22,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/data/765e360ff/da6d2a210db34f548bbd17fcfc697c5c [2022-10-17 16:44:22,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:44:22,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:44:22,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:44:22,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:44:22,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:44:22,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:44:22" (1/1) ... [2022-10-17 16:44:22,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a05fc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:22, skipping insertion in model container [2022-10-17 16:44:22,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:44:22" (1/1) ... [2022-10-17 16:44:22,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:44:22,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:44:23,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2022-10-17 16:44:23,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:44:23,254 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:44:23,385 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2022-10-17 16:44:23,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:44:23,484 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:44:23,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23 WrapperNode [2022-10-17 16:44:23,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:44:23,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:44:23,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:44:23,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:44:23,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,601 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1264 [2022-10-17 16:44:23,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:44:23,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:44:23,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:44:23,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:44:23,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:44:23,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:44:23,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:44:23,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:44:23,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:44:23" (1/1) ... [2022-10-17 16:44:23,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:44:23,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:44:23,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:44:23,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cad135a1-3539-444c-957a-f52ba77a7bc4/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:44:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:44:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:44:23,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:44:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:44:23,992 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:44:23,994 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:44:25,621 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:44:26,000 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:44:26,001 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 16:44:26,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:44:26 BoogieIcfgContainer [2022-10-17 16:44:26,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:44:26,005 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:44:26,006 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:44:26,017 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:44:26,017 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:44:26" (1/1) ... [2022-10-17 16:44:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:44:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 236 states and 418 transitions. [2022-10-17 16:44:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 418 transitions. [2022-10-17 16:44:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-17 16:44:26,107 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:26,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:27,869 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 16:44:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 247 states and 445 transitions. [2022-10-17 16:44:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 445 transitions. [2022-10-17 16:44:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 16:44:28,082 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:28,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:28,300 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 16:44:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 249 states and 449 transitions. [2022-10-17 16:44:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 449 transitions. [2022-10-17 16:44:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 16:44:28,635 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:28,816 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 16:44:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 256 states and 466 transitions. [2022-10-17 16:44:29,370 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 466 transitions. [2022-10-17 16:44:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 16:44:29,375 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:29,548 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 16:44:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 267 states and 493 transitions. [2022-10-17 16:44:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 493 transitions. [2022-10-17 16:44:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 16:44:30,427 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:30,563 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 16:44:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 269 states and 495 transitions. [2022-10-17 16:44:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 495 transitions. [2022-10-17 16:44:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 16:44:30,635 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:30,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:30,755 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 16:44:30,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 270 states and 496 transitions. [2022-10-17 16:44:30,812 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 496 transitions. [2022-10-17 16:44:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 16:44:30,814 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:30,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:30,956 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 16:44:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 270 states and 494 transitions. [2022-10-17 16:44:31,009 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 494 transitions. [2022-10-17 16:44:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:31,011 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:31,972 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 16:44:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 274 states and 500 transitions. [2022-10-17 16:44:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 500 transitions. [2022-10-17 16:44:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:32,117 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:32,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:32,483 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 16:44:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 277 states and 507 transitions. [2022-10-17 16:44:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 507 transitions. [2022-10-17 16:44:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:35,718 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:35,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:35,944 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 16:44:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 321 states and 600 transitions. [2022-10-17 16:44:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 600 transitions. [2022-10-17 16:44:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:36,768 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:36,912 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 16:44:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:36,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 319 states and 594 transitions. [2022-10-17 16:44:36,964 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 594 transitions. [2022-10-17 16:44:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:36,965 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:37,201 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 16:44:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 363 states and 686 transitions. [2022-10-17 16:44:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 686 transitions. [2022-10-17 16:44:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:38,448 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:38,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:38,564 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 16:44:38,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 361 states and 679 transitions. [2022-10-17 16:44:38,628 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 679 transitions. [2022-10-17 16:44:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:38,629 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:38,748 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 16:44:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 405 states and 770 transitions. [2022-10-17 16:44:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 770 transitions. [2022-10-17 16:44:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:39,601 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:39,736 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 16:44:39,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 403 states and 764 transitions. [2022-10-17 16:44:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 764 transitions. [2022-10-17 16:44:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:39,803 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:40,056 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 16:44:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 446 states and 854 transitions. [2022-10-17 16:44:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 854 transitions. [2022-10-17 16:44:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:41,753 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:41,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:41,883 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 16:44:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 445 states and 849 transitions. [2022-10-17 16:44:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 849 transitions. [2022-10-17 16:44:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:41,950 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:41,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:43,009 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 16:44:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 456 states and 874 transitions. [2022-10-17 16:44:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 874 transitions. [2022-10-17 16:44:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-17 16:44:48,659 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:48,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:48,871 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 16:44:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 456 states and 873 transitions. [2022-10-17 16:44:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 873 transitions. [2022-10-17 16:44:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-10-17 16:44:49,966 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.