./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:43,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:43,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:43,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:43,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:43,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:43,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:43,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:43,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:43,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:43,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:43,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:43,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:43,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:43,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:43,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:43,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:43,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:43,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:43,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:43,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:43,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:43,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:43,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:43,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:43,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:43,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:43,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:43,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:43,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:43,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:43,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:43,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:43,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:43,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:43,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:43,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:43,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:43,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:43,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:43,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:43,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 03:52:43,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:43,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:43,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:43,268 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:43,269 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:43,269 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:43,269 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:52:43,269 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:43,270 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:43,270 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:52:43,271 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:52:43,271 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:43,272 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:52:43,272 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:52:43,272 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:52:43,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:43,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:52:43,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:43,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:43,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:43,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:43,275 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:43,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:43,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:43,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:43,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:43,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:43,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:43,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:43,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:43,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:43,277 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:52:43,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:52:43,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:43,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:43,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:43,279 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d [2021-11-03 03:52:43,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:43,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:43,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:43,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:43,653 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:43,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-03 03:52:43,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/3b1e5f916/a880b84bb6ee43f083056c4b7c794865/FLAG5a1c2cab1 [2021-11-03 03:52:44,974 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:44,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-03 03:52:45,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/3b1e5f916/a880b84bb6ee43f083056c4b7c794865/FLAG5a1c2cab1 [2021-11-03 03:52:45,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/3b1e5f916/a880b84bb6ee43f083056c4b7c794865 [2021-11-03 03:52:45,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:45,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:45,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:45,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:45,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:45,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:45" (1/1) ... [2021-11-03 03:52:45,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19934df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:45, skipping insertion in model container [2021-11-03 03:52:45,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:45" (1/1) ... [2021-11-03 03:52:45,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:45,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:46,094 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-03 03:52:46,095 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-03 03:52:46,335 WARN L228 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_20c2e067-fbef-4734-b8fe-e2d55088e8f6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-03 03:52:47,297 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:47,811 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:48,984 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:48,985 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:48,993 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:48,995 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:48,999 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:49,001 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:49,268 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 03:52:49,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:49,696 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:52:49,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70ca4f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:49, skipping insertion in model container [2021-11-03 03:52:49,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:49,698 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:52:49,701 INFO L168 Benchmark]: Toolchain (without parser) took 4546.93 ms. Allocated memory was 134.2 MB in the beginning and 197.1 MB in the end (delta: 62.9 MB). Free memory was 80.9 MB in the beginning and 91.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:49,702 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 134.2 MB. Free memory is still 116.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:52:49,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4542.31 ms. Allocated memory was 134.2 MB in the beginning and 197.1 MB in the end (delta: 62.9 MB). Free memory was 80.8 MB in the beginning and 91.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2021-11-03 03:52:49,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 134.2 MB. Free memory is still 116.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 4542.31 ms. Allocated memory was 134.2 MB in the beginning and 197.1 MB in the end (delta: 62.9 MB). Free memory was 80.8 MB in the beginning and 91.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5568]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:52:52,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:52:52,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:52:52,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:52:52,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:52:52,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:52:52,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:52:52,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:52:52,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:52:52,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:52:52,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:52:52,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:52:52,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:52:52,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:52:52,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:52:52,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:52:52,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:52:52,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:52:52,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:52:52,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:52:52,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:52:52,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:52:52,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:52:52,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:52:52,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:52:52,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:52:52,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:52:52,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:52:52,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:52:52,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:52:52,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:52:52,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:52:52,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:52:52,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:52:52,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:52:52,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:52:52,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:52:52,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:52:52,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:52:52,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:52:52,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:52:52,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 03:52:52,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:52:52,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:52:52,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:52:52,671 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:52:52,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:52:52,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:52:52,672 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:52:52,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:52:52,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:52:52,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:52:52,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:52:52,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:52:52,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:52:52,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:52:52,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:52:52,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:52:52,677 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:52:52,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:52:52,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:52:52,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:52:52,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:52:52,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:52:52,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:52:52,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:52:52,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:52:52,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:52:52,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:52:52,680 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:52:52,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:52:52,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:52:52,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:52:52,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:52:52,681 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecea5961d53d2608898d65c83a7bf6d9a36712172eaf67bd828ea354982e0e3d [2021-11-03 03:52:53,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:52:53,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:52:53,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:52:53,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:52:53,110 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:52:53,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-03 03:52:53,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/a1d5d8df1/9d4254e83256496d8a54b6f87bb481cd/FLAGadc6165c2 [2021-11-03 03:52:54,588 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:52:54,589 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-03 03:52:54,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/a1d5d8df1/9d4254e83256496d8a54b6f87bb481cd/FLAGadc6165c2 [2021-11-03 03:52:55,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/data/a1d5d8df1/9d4254e83256496d8a54b6f87bb481cd [2021-11-03 03:52:55,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:52:55,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:52:55,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:52:55,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:52:55,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:52:55,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:55" (1/1) ... [2021-11-03 03:52:55,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6fe847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:55, skipping insertion in model container [2021-11-03 03:52:55,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:55" (1/1) ... [2021-11-03 03:52:55,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:52:55,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:52:56,187 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-03 03:52:56,188 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-03 03:52:56,427 WARN L228 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_20c2e067-fbef-4734-b8fe-e2d55088e8f6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-03 03:52:59,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:52:59,920 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:53:00,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:53:00,161 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-03 03:53:00,161 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-03 03:53:00,167 WARN L228 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_20c2e067-fbef-4734-b8fe-e2d55088e8f6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-03 03:53:00,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:53:00,739 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:53:00,904 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5338] [2021-11-03 03:53:00,904 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5339-5340] [2021-11-03 03:53:00,909 WARN L228 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_20c2e067-fbef-4734-b8fe-e2d55088e8f6/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i[158055,158068] [2021-11-03 03:53:01,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:53:01,744 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:53:01,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01 WrapperNode [2021-11-03 03:53:01,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:53:01,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:53:01,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:53:01,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:53:01,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:01,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:06,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:53:06,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:53:06,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:53:06,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:53:06,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:06,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:07,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:07,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:09,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:09,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:09,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:10,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:53:10,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:53:10,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:53:10,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:53:10,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (1/1) ... [2021-11-03 03:53:10,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:53:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:53:10,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:53:10,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:53:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:53:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 03:53:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:53:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 03:53:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 03:53:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:53:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:53:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 03:53:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 03:53:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 03:53:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 03:53:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:53:10,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:53:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:53:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 03:53:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:53:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 03:53:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 03:53:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 03:53:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:53:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:53:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 03:53:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:53:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 03:53:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:53:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 03:53:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 03:53:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 03:53:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 03:53:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 04:02:50,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:02:50,345 INFO L299 CfgBuilder]: Removed 20027 assume(true) statements. [2021-11-03 04:02:50,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:02:50 BoogieIcfgContainer [2021-11-03 04:02:50,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:02:50,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:02:50,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:02:50,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:02:50,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:55" (1/3) ... [2021-11-03 04:02:50,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321e954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:02:50, skipping insertion in model container [2021-11-03 04:02:50,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:01" (2/3) ... [2021-11-03 04:02:50,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321e954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:02:50, skipping insertion in model container [2021-11-03 04:02:50,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:02:50" (3/3) ... [2021-11-03 04:02:50,396 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--tulip.ko-entry_point.cil.out.i [2021-11-03 04:02:50,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:02:50,404 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-03 04:02:50,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:02:50,597 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:02:50,598 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-03 04:02:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 18345 states, 18337 states have (on average 1.3711075966624857) internal successors, (25142), 18344 states have internal predecessors, (25142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 04:02:51,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:51,361 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:51,362 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 04:02:51,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2025150548, now seen corresponding path program 1 times [2021-11-03 04:02:51,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:51,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22134432] [2021-11-03 04:02:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:51,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:51,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:51,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:03:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:03:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 4970 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:03:30,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:03:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:30,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:03:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:31,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:03:31,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22134432] [2021-11-03 04:03:31,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22134432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:03:31,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:03:31,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:03:31,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392620383] [2021-11-03 04:03:31,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:03:31,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:03:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:03:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:03:31,279 INFO L87 Difference]: Start difference. First operand has 18345 states, 18337 states have (on average 1.3711075966624857) internal successors, (25142), 18344 states have internal predecessors, (25142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:03:33,107 INFO L93 Difference]: Finished difference Result 36639 states and 50221 transitions. [2021-11-03 04:03:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:03:33,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 04:03:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:03:33,282 INFO L225 Difference]: With dead ends: 36639 [2021-11-03 04:03:33,283 INFO L226 Difference]: Without dead ends: 18232 [2021-11-03 04:03:33,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:03:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18232 states. [2021-11-03 04:03:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18232 to 18232. [2021-11-03 04:03:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18232 states, 18225 states have (on average 1.3661454046639232) internal successors, (24898), 18231 states have internal predecessors, (24898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18232 states to 18232 states and 24898 transitions. [2021-11-03 04:03:34,158 INFO L78 Accepts]: Start accepts. Automaton has 18232 states and 24898 transitions. Word has length 36 [2021-11-03 04:03:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:03:34,159 INFO L470 AbstractCegarLoop]: Abstraction has 18232 states and 24898 transitions. [2021-11-03 04:03:34,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 18232 states and 24898 transitions. [2021-11-03 04:03:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:03:34,166 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:03:34,167 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:03:34,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:03:34,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:03:34,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 04:03:34,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:03:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash -23955284, now seen corresponding path program 1 times [2021-11-03 04:03:34,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:03:34,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504238125] [2021-11-03 04:03:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:03:34,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:03:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:03:34,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:03:34,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:04:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:04:13,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 4980 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:04:13,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:04:13,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:04:13,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:04:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:04:14,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:04:14,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504238125] [2021-11-03 04:04:14,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504238125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:04:14,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1107098222] [2021-11-03 04:04:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:04:14,315 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:04:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:04:14,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:04:14,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-03 04:04:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:04:20,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 4980 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:04:20,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:04:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:04:21,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:04:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:04:21,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1107098222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:04:21,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:04:21,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 04:04:21,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355785205] [2021-11-03 04:04:21,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:04:21,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:04:21,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:04:21,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:04:21,507 INFO L87 Difference]: Start difference. First operand 18232 states and 24898 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:04:24,820 INFO L93 Difference]: Finished difference Result 48949 states and 66865 transitions. [2021-11-03 04:04:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:04:24,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-03 04:04:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:04:24,998 INFO L225 Difference]: With dead ends: 48949 [2021-11-03 04:04:24,998 INFO L226 Difference]: Without dead ends: 30749 [2021-11-03 04:04:25,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:04:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30749 states. [2021-11-03 04:04:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30749 to 29800. [2021-11-03 04:04:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29800 states, 29793 states have (on average 1.36673044003625) internal successors, (40719), 29799 states have internal predecessors, (40719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29800 states to 29800 states and 40719 transitions. [2021-11-03 04:04:26,491 INFO L78 Accepts]: Start accepts. Automaton has 29800 states and 40719 transitions. Word has length 38 [2021-11-03 04:04:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:04:26,492 INFO L470 AbstractCegarLoop]: Abstraction has 29800 states and 40719 transitions. [2021-11-03 04:04:26,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 29800 states and 40719 transitions. [2021-11-03 04:04:26,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:04:26,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:04:26,505 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:04:26,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2021-11-03 04:04:26,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:04:26,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:04:26,932 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 04:04:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:04:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash 741688215, now seen corresponding path program 1 times [2021-11-03 04:04:26,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:04:26,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368631281] [2021-11-03 04:04:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:04:26,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:04:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:04:26,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:04:27,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:05:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 5030 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:05:06,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:06,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:07,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:05:07,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368631281] [2021-11-03 04:05:07,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368631281] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:05:07,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [184169823] [2021-11-03 04:05:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:07,616 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:05:07,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:05:07,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:05:07,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-03 04:05:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:14,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 5030 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:05:14,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:05:15,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 04:05:15,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [184169823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:05:15,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:05:15,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 04:05:15,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274257661] [2021-11-03 04:05:15,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:05:15,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:05:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:05:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:05:15,829 INFO L87 Difference]: Start difference. First operand 29800 states and 40719 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:18,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:05:18,743 INFO L93 Difference]: Finished difference Result 31212 states and 42812 transitions. [2021-11-03 04:05:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:05:18,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 04:05:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:05:18,865 INFO L225 Difference]: With dead ends: 31212 [2021-11-03 04:05:18,866 INFO L226 Difference]: Without dead ends: 31202 [2021-11-03 04:05:18,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:05:18,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31202 states. [2021-11-03 04:05:20,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31202 to 29790. [2021-11-03 04:05:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29790 states, 29788 states have (on average 1.3665234322545992) internal successors, (40706), 29789 states have internal predecessors, (40706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29790 states to 29790 states and 40706 transitions. [2021-11-03 04:05:20,179 INFO L78 Accepts]: Start accepts. Automaton has 29790 states and 40706 transitions. Word has length 47 [2021-11-03 04:05:20,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:20,180 INFO L470 AbstractCegarLoop]: Abstraction has 29790 states and 40706 transitions. [2021-11-03 04:05:20,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:05:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 29790 states and 40706 transitions. [2021-11-03 04:05:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:05:20,195 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:20,196 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:20,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:20,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 04:05:20,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:05:20,623 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-03 04:05:20,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash 602167443, now seen corresponding path program 1 times [2021-11-03 04:05:20,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:05:20,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623720053] [2021-11-03 04:05:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:20,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:05:20,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:05:20,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:05:20,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:05:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:06:00,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 5117 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:06:00,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:00,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:06:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:06:01,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:06:01,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623720053] [2021-11-03 04:06:01,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623720053] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:06:01,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [45541026] [2021-11-03 04:06:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:06:01,492 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:06:01,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:06:01,508 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:06:01,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c2e067-fbef-4734-b8fe-e2d55088e8f6/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process