./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/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_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- 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 16:43:48,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:43:48,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:43:48,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:43:48,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:43:48,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:43:48,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:43:48,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:43:48,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:43:48,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:43:48,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:43:48,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:43:48,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:43:48,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:43:48,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:43:48,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:43:48,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:43:48,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:43:48,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:43:48,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:43:48,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:43:48,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:43:48,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:43:48,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:43:48,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:43:48,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:43:48,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:43:48,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:43:48,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:43:48,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:43:48,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:43:48,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:43:48,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:43:48,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:43:48,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:43:48,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:43:48,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:43:48,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:43:48,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:43:48,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:43:48,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:43:48,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-10-17 16:43:48,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:43:48,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:43:48,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:43:48,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:43:48,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:43:48,188 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:43:48,189 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 16:43:48,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:43:48,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:43:48,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:43:48,191 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 16:43:48,191 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 16:43:48,192 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 16:43:48,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:43:48,192 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:43:48,192 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:43:48,193 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:43:48,193 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:43:48,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:43:48,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:43:48,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:43:48,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:43:48,195 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:43:48,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:43:48,196 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_916ad270-924c-4693-bbda-40ba05dbd847/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2022-10-17 16:43:48,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:43:48,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:43:48,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:43:48,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:43:48,526 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:43:48,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-10-17 16:43:48,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/data/632a19e71/aed7dd944b724db1a01b592016b49ca6/FLAG075dfb6cd [2022-10-17 16:43:49,237 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:43:49,237 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-10-17 16:43:49,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/data/632a19e71/aed7dd944b724db1a01b592016b49ca6/FLAG075dfb6cd [2022-10-17 16:43:49,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/data/632a19e71/aed7dd944b724db1a01b592016b49ca6 [2022-10-17 16:43:49,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:43:49,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:43:49,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:43:49,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:43:49,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:43:49,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:43:49" (1/1) ... [2022-10-17 16:43:49,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfe4f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:49, skipping insertion in model container [2022-10-17 16:43:49,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:43:49" (1/1) ... [2022-10-17 16:43:49,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:43:49,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:43:49,970 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_916ad270-924c-4693-bbda-40ba05dbd847/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-10-17 16:43:50,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:43:50,058 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:43:50,092 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_916ad270-924c-4693-bbda-40ba05dbd847/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-10-17 16:43:50,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:43:50,180 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:43:50,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50 WrapperNode [2022-10-17 16:43:50,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:43:50,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:43:50,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:43:50,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:43:50,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,282 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 33, calls inlined = 51, statements flattened = 551 [2022-10-17 16:43:50,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:43:50,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:43:50,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:43:50,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:43:50,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:43:50,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:43:50,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:43:50,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:43:50,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:43:50" (1/1) ... [2022-10-17 16:43:50,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:43:50,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:43:50,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:43:50,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916ad270-924c-4693-bbda-40ba05dbd847/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:43:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 16:43:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 16:43:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 16:43:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:43:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:43:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 16:43:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:43:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 16:43:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:43:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:43:50,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:43:50,739 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:43:50,743 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:43:51,762 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:43:51,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:43:51,876 INFO L300 CfgBuilder]: Removed 76 assume(true) statements. [2022-10-17 16:43:51,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:43:51 BoogieIcfgContainer [2022-10-17 16:43:51,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:43:51,882 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:43:51,882 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:43:51,893 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:43:51,893 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:43:51" (1/1) ... [2022-10-17 16:43:51,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:43:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:51,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 328 states and 442 transitions. [2022-10-17 16:43:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 442 transitions. [2022-10-17 16:43:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 16:43:51,998 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:51,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:52,210 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 16:43:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 327 states and 440 transitions. [2022-10-17 16:43:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 440 transitions. [2022-10-17 16:43:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 16:43:52,262 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:52,468 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 16:43:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 326 states and 439 transitions. [2022-10-17 16:43:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 439 transitions. [2022-10-17 16:43:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 16:43:52,548 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:52,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:52,842 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 16:43:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:53,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 329 states and 445 transitions. [2022-10-17 16:43:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 445 transitions. [2022-10-17 16:43:53,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 16:43:53,097 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:53,331 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 16:43:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 332 states and 450 transitions. [2022-10-17 16:43:53,860 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 450 transitions. [2022-10-17 16:43:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 16:43:53,860 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:53,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:54,125 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 16:43:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 336 states and 458 transitions. [2022-10-17 16:43:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 458 transitions. [2022-10-17 16:43:54,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 16:43:54,967 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:54,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:55,428 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 16:43:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 340 states and 466 transitions. [2022-10-17 16:43:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 466 transitions. [2022-10-17 16:43:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 16:43:56,736 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:56,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:56,934 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 16:43:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 342 states and 471 transitions. [2022-10-17 16:43:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 471 transitions. [2022-10-17 16:43:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 16:43:57,627 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:58,013 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 16:43:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 345 states and 478 transitions. [2022-10-17 16:43:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 478 transitions. [2022-10-17 16:43:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 16:43:59,614 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:59,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:43:59,642 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 16:43:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:43:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 344 states and 477 transitions. [2022-10-17 16:43:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 477 transitions. [2022-10-17 16:43:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 16:43:59,660 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:43:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:43:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:00,041 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 16:44:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 345 states and 479 transitions. [2022-10-17 16:44:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 479 transitions. [2022-10-17 16:44:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 16:44:00,591 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:00,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:01,002 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 16:44:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 348 states and 485 transitions. [2022-10-17 16:44:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 485 transitions. [2022-10-17 16:44:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 16:44:02,489 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:02,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:02,641 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 16:44:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 351 states and 490 transitions. [2022-10-17 16:44:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 490 transitions. [2022-10-17 16:44:04,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:44:04,469 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:04,500 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 16:44:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:06,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 356 states and 498 transitions. [2022-10-17 16:44:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 498 transitions. [2022-10-17 16:44:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:44:06,527 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:06,967 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 16:44:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 361 states and 509 transitions. [2022-10-17 16:44:09,605 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 509 transitions. [2022-10-17 16:44:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:44:09,606 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:09,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:09,643 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 16:44:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 360 states and 508 transitions. [2022-10-17 16:44:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 508 transitions. [2022-10-17 16:44:09,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:44:09,668 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:09,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:10,089 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 16:44:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 361 states and 509 transitions. [2022-10-17 16:44:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 509 transitions. [2022-10-17 16:44:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 16:44:10,316 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:10,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:10,345 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 16:44:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 361 states and 505 transitions. [2022-10-17 16:44:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 505 transitions. [2022-10-17 16:44:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 16:44:10,358 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:10,581 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 16:44:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 373 states and 524 transitions. [2022-10-17 16:44:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 524 transitions. [2022-10-17 16:44:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 16:44:13,522 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:44:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:44:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 385 states and 546 transitions. [2022-10-17 16:44:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 546 transitions. [2022-10-17 16:44:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 16:44:20,104 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:44:20,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:44:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:44:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.