./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ --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 3fb71e8e4e407700549b8952f3afdeeffa0973a11e08bb7f18bca04e4b75e49d --- 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-6b4ec56 [2022-11-20 18:13:23,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:13:23,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:13:23,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:13:23,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:13:23,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:13:23,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:13:23,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:13:23,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:13:23,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:13:23,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:13:23,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:13:23,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:13:23,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:13:23,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:13:23,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:13:23,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:13:23,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:13:23,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:13:23,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:13:23,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:13:23,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:13:23,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:13:23,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:13:23,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:13:23,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:13:23,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:13:23,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:13:23,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:13:23,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:13:23,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:13:23,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:13:23,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:13:23,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:13:23,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:13:23,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:13:23,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:13:23,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:13:23,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:13:23,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:13:23,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:13:23,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-11-20 18:13:23,942 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:13:23,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:13:23,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:13:23,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 18:13:23,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 18:13:23,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 18:13:23,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:13:23,946 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 18:13:23,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:13:23,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 18:13:23,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:13:23,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:13:23,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:13:23,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:13:23,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 18:13:23,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:13:23,949 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:13:23,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:13:23,949 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 18:13:23,949 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 18:13:23,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:13:23,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 18:13:23,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:13:23,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:13:23,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:13:23,951 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 18:13:23,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:13:23,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:13:23,952 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_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fb71e8e4e407700549b8952f3afdeeffa0973a11e08bb7f18bca04e4b75e49d [2022-11-20 18:13:24,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:13:24,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:13:24,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:13:24,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:13:24,288 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:13:24,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-20 18:13:27,364 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:13:27,659 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:13:27,660 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-20 18:13:27,672 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/data/5a397455f/598dc0b65e6c4cde88d7166484a91065/FLAG4c88f4c8e [2022-11-20 18:13:27,697 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/data/5a397455f/598dc0b65e6c4cde88d7166484a91065 [2022-11-20 18:13:27,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:13:27,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:13:27,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:13:27,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:13:27,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:13:27,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:27" (1/1) ... [2022-11-20 18:13:27,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7477182c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:27, skipping insertion in model container [2022-11-20 18:13:27,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:13:27" (1/1) ... [2022-11-20 18:13:27,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:13:27,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:13:28,088 WARN L237 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_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2022-11-20 18:13:28,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:13:28,184 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:13:28,275 WARN L237 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_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10378,10391] [2022-11-20 18:13:28,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:13:28,339 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:13:28,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28 WrapperNode [2022-11-20 18:13:28,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:13:28,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:13:28,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:13:28,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:13:28,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,412 INFO L138 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 830 [2022-11-20 18:13:28,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:13:28,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:13:28,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:13:28,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:13:28,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:13:28,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:13:28,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:13:28,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:13:28,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:13:28" (1/1) ... [2022-11-20 18:13:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 18:13:28,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 18:13:28,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 18:13:28,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c23d9e7f-6a1c-4cf1-9e50-909f0eb4a419/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 18:13:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 18:13:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 18:13:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:13:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:13:28,789 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:13:28,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:13:29,811 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:13:30,072 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:13:30,072 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 18:13:30,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:13:30 BoogieIcfgContainer [2022-11-20 18:13:30,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:13:30,081 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 18:13:30,081 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 18:13:30,091 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 18:13:30,091 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:13:30" (1/1) ... [2022-11-20 18:13:30,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:13:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:30,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 144 states and 252 transitions. [2022-11-20 18:13:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 252 transitions. [2022-11-20 18:13:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 18:13:30,180 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 156 states and 274 transitions. [2022-11-20 18:13:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 274 transitions. [2022-11-20 18:13:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 18:13:31,062 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:31,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 153 states and 268 transitions. [2022-11-20 18:13:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 268 transitions. [2022-11-20 18:13:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 18:13:31,403 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:31,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:31,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 150 states and 262 transitions. [2022-11-20 18:13:31,759 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 262 transitions. [2022-11-20 18:13:31,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 18:13:31,763 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:31,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 151 states and 263 transitions. [2022-11-20 18:13:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 263 transitions. [2022-11-20 18:13:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 18:13:32,007 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:32,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 157 states and 274 transitions. [2022-11-20 18:13:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 274 transitions. [2022-11-20 18:13:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 18:13:32,700 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:32,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 150 states and 261 transitions. [2022-11-20 18:13:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 261 transitions. [2022-11-20 18:13:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 18:13:32,894 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:32,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 147 states and 255 transitions. [2022-11-20 18:13:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 255 transitions. [2022-11-20 18:13:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 18:13:33,138 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:33,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 144 states and 249 transitions. [2022-11-20 18:13:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 249 transitions. [2022-11-20 18:13:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 18:13:33,311 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 154 states and 266 transitions. [2022-11-20 18:13:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 266 transitions. [2022-11-20 18:13:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 18:13:34,322 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:34,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 151 states and 260 transitions. [2022-11-20 18:13:34,513 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 260 transitions. [2022-11-20 18:13:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 18:13:34,514 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:34,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 144 states and 248 transitions. [2022-11-20 18:13:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 248 transitions. [2022-11-20 18:13:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 18:13:34,723 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:34,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 147 states and 253 transitions. [2022-11-20 18:13:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 253 transitions. [2022-11-20 18:13:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 18:13:36,561 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:36,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 144 states and 247 transitions. [2022-11-20 18:13:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 247 transitions. [2022-11-20 18:13:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 18:13:36,777 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:36,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 144 states and 246 transitions. [2022-11-20 18:13:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 246 transitions. [2022-11-20 18:13:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 18:13:39,880 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:39,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 147 states and 251 transitions. [2022-11-20 18:13:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 251 transitions. [2022-11-20 18:13:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 18:13:43,231 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:43,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 144 states and 245 transitions. [2022-11-20 18:13:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 245 transitions. [2022-11-20 18:13:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 18:13:43,395 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:43,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:13:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:13:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:13:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 144 states and 244 transitions. [2022-11-20 18:13:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 244 transitions. [2022-11-20 18:13:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 18:13:47,718 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:13:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:13:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:14:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:16:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:16:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 148 states and 251 transitions. [2022-11-20 18:16:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 251 transitions. [2022-11-20 18:16:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 18:16:24,943 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:16:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:16:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:16:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:19:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:19:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 153 states and 258 transitions. [2022-11-20 18:19:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 258 transitions. [2022-11-20 18:19:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 18:19:30,757 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:19:30,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:19:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:20:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.