./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.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_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/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_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/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_ca95ba32-2c77-4619-a2e5-933d2b629e49/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 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 --- 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 16:37:44,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:37:44,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:37:44,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:37:44,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:37:44,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:37:44,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:37:44,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:37:44,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:37:44,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:37:44,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:37:44,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:37:44,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:37:44,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:37:44,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:37:44,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:37:44,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:37:44,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:37:44,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:37:44,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:37:44,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:37:44,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:37:44,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:37:44,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:37:44,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:37:44,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:37:44,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:37:44,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:37:44,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:37:44,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:37:44,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:37:44,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:37:44,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:37:44,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:37:44,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:37:44,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:37:44,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:37:44,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:37:44,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:37:44,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:37:44,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:37:44,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:37:44,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:37:44,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:37:44,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:37:44,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:37:44,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:37:44,259 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:37:44,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:37:44,260 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:37:44,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:37:44,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:37:44,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:37:44,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:37:44,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:37:44,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:37:44,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:37:44,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:37:44,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:37:44,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:37:44,263 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:37:44,263 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:37:44,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:37:44,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:37:44,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:37:44,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:37:44,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:37:44,265 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:37:44,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:37:44,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:37:44,267 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_ca95ba32-2c77-4619-a2e5-933d2b629e49/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 [2022-10-17 16:37:44,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:37:44,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:37:44,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:37:44,619 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:37:44,620 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:37:44,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2022-10-17 16:37:44,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/data/e4934f7dd/fbd0d0a4bd8249039a3d6a743932b31e/FLAG3788d548b [2022-10-17 16:37:45,774 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:37:45,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2022-10-17 16:37:45,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/data/e4934f7dd/fbd0d0a4bd8249039a3d6a743932b31e/FLAG3788d548b [2022-10-17 16:37:46,047 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/data/e4934f7dd/fbd0d0a4bd8249039a3d6a743932b31e [2022-10-17 16:37:46,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:37:46,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:37:46,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:37:46,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:37:46,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:37:46,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:37:46" (1/1) ... [2022-10-17 16:37:46,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b061a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:46, skipping insertion in model container [2022-10-17 16:37:46,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:37:46" (1/1) ... [2022-10-17 16:37:46,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:37:46,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:37:48,835 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_ca95ba32-2c77-4619-a2e5-933d2b629e49/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2022-10-17 16:37:48,866 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_ca95ba32-2c77-4619-a2e5-933d2b629e49/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2022-10-17 16:37:49,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:37:49,082 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:37:50,262 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_ca95ba32-2c77-4619-a2e5-933d2b629e49/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2022-10-17 16:37:50,271 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_ca95ba32-2c77-4619-a2e5-933d2b629e49/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2022-10-17 16:37:50,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:37:50,445 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:37:50,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50 WrapperNode [2022-10-17 16:37:50,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:37:50,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:37:50,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:37:50,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:37:50,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:50,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,039 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2022-10-17 16:37:51,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:37:51,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:37:51,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:37:51,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:37:51,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:37:51,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:37:51,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:37:51,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:37:51,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:50" (1/1) ... [2022-10-17 16:37:51,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:37:51,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:37:51,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:37:51,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca95ba32-2c77-4619-a2e5-933d2b629e49/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:37:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:37:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 16:37:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 16:37:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 16:37:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 16:37:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 16:37:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 16:37:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-10-17 16:37:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-10-17 16:37:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 16:37:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 16:37:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 16:37:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 16:37:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 16:37:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 16:37:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:37:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:37:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:37:51,833 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:37:51,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:38:00,372 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:38:02,536 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:38:02,536 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-10-17 16:38:02,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:38:02 BoogieIcfgContainer [2022-10-17 16:38:02,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:38:02,543 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:38:02,543 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:38:02,553 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:38:02,553 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:38:02" (1/1) ... [2022-10-17 16:38:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:38:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 1738 states and 3413 transitions. [2022-10-17 16:38:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3413 transitions. [2022-10-17 16:38:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:02,695 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:02,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:03,124 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 16:38:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 1748 states and 3431 transitions. [2022-10-17 16:38:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 3431 transitions. [2022-10-17 16:38:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:03,291 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:03,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:03,428 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 16:38:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 1749 states and 3431 transitions. [2022-10-17 16:38:03,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 3431 transitions. [2022-10-17 16:38:03,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:03,490 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:03,634 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 16:38:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 1750 states and 3431 transitions. [2022-10-17 16:38:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 3431 transitions. [2022-10-17 16:38:03,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:03,670 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:03,784 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 16:38:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 1751 states and 3431 transitions. [2022-10-17 16:38:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 3431 transitions. [2022-10-17 16:38:03,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:03,825 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:03,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:03,956 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 16:38:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3456 states to 1757 states and 3442 transitions. [2022-10-17 16:38:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 3442 transitions. [2022-10-17 16:38:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:04,118 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:04,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:04,190 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 16:38:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3456 states to 1758 states and 3442 transitions. [2022-10-17 16:38:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 3442 transitions. [2022-10-17 16:38:04,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:04,218 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:04,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:04,301 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 16:38:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 1760 states and 3447 transitions. [2022-10-17 16:38:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 3447 transitions. [2022-10-17 16:38:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-17 16:38:04,495 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:04,591 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 16:38:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 1768 states and 3462 transitions. [2022-10-17 16:38:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 3462 transitions. [2022-10-17 16:38:04,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 16:38:04,652 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:04,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:38:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 1784 states and 3495 transitions. [2022-10-17 16:38:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 3495 transitions. [2022-10-17 16:38:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 16:38:05,872 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:05,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:06,022 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 16:38:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 1792 states and 3512 transitions. [2022-10-17 16:38:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 3512 transitions. [2022-10-17 16:38:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 16:38:07,075 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:07,142 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 16:38:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 1793 states and 3513 transitions. [2022-10-17 16:38:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 3513 transitions. [2022-10-17 16:38:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 16:38:07,243 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:07,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:07,309 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 16:38:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 1794 states and 3514 transitions. [2022-10-17 16:38:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 3514 transitions. [2022-10-17 16:38:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 16:38:07,420 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:07,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 16:38:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 1812 states and 3554 transitions. [2022-10-17 16:38:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3554 transitions. [2022-10-17 16:38:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 16:38:10,004 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:10,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 16:38:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:10,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 1820 states and 3572 transitions. [2022-10-17 16:38:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 3572 transitions. [2022-10-17 16:38:10,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 16:38:10,983 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:11,051 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 16:38:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 1811 states and 3554 transitions. [2022-10-17 16:38:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 3554 transitions. [2022-10-17 16:38:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 16:38:11,091 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 16:38:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 1812 states and 3555 transitions. [2022-10-17 16:38:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3555 transitions. [2022-10-17 16:38:11,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 16:38:11,303 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 16:38:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:38:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 1813 states and 3556 transitions. [2022-10-17 16:38:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 3556 transitions. [2022-10-17 16:38:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 16:38:11,508 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:38:11,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:38:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:38:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.