./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--sis--sis900.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/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--sis--sis900.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8 --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 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:59:36,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:36,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:36,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:36,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:36,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:36,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:36,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:36,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:36,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:36,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:36,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:36,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:36,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:36,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:36,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:36,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:36,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:36,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:36,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:36,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:36,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:36,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:36,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:36,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:36,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:36,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:36,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:36,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:36,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:36,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:36,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:36,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:36,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:36,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:36,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:36,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:36,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:36,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:36,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:36,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:36,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:59:36,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:36,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:36,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:36,962 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:36,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:36,962 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:36,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:59:36,969 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:36,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:36,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:59:36,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:59:36,970 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:36,971 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:59:36,971 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:59:36,971 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:59:36,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:36,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:59:36,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:36,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:36,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:36,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:36,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:36,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:36,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:36,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:36,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:36,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:36,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:36,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:36,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:36,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:36,975 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:59:36,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:59:36,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:36,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:36,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:36,976 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_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf [2021-11-07 01:59:37,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:37,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:37,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:37,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:37,348 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:37,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 01:59:37,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/fd2e43334/1c6245d136664e1ea4c126dbae06f86e/FLAG42762ce81 [2021-11-07 01:59:38,369 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:38,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 01:59:38,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/fd2e43334/1c6245d136664e1ea4c126dbae06f86e/FLAG42762ce81 [2021-11-07 01:59:38,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/fd2e43334/1c6245d136664e1ea4c126dbae06f86e [2021-11-07 01:59:38,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:38,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:38,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:38,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:38,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:38,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:38" (1/1) ... [2021-11-07 01:59:38,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26faa26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:38, skipping insertion in model container [2021-11-07 01:59:38,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:38" (1/1) ... [2021-11-07 01:59:38,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:38,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:39,545 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2021-11-07 01:59:39,546 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2021-11-07 01:59:40,257 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_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2021-11-07 01:59:41,498 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:59:41,499 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:59:41,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:41,702 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) [2021-11-07 01:59:41,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@65dff2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:41, skipping insertion in model container [2021-11-07 01:59:41,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:41,703 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:59:41,706 INFO L168 Benchmark]: Toolchain (without parser) took 2961.42 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 51.5 MB in the beginning and 58.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:41,707 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 61.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:41,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2958.95 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 51.3 MB in the beginning and 58.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:41,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 61.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2958.95 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 51.3 MB in the beginning and 58.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6235]: 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_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/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--sis--sis900.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8 --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 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:59:43,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:43,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:43,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:43,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:43,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:43,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:43,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:43,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:43,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:43,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:43,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:43,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:43,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:43,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:43,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:43,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:43,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:43,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:44,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:44,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:44,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:44,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:44,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:44,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:44,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:44,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:44,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:44,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:44,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:44,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:44,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:44,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:44,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:44,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:44,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:44,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:44,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:44,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:44,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:44,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:44,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:59:44,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:44,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:44,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:44,065 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:44,065 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:44,066 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:44,066 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:44,066 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:44,067 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:44,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:44,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:44,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:44,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:44,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:44,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:44,070 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:59:44,070 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:59:44,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:44,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:44,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:44,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:44,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:59:44,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:44,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:44,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:44,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:44,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:44,074 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:59:44,074 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:44,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:44,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:44,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:44,075 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_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf [2021-11-07 01:59:44,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:44,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:44,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:44,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:44,454 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:44,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 01:59:44,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/c12badfd1/d6e4be5e2b59408b86c3836e69c82535/FLAGc15b440f2 [2021-11-07 01:59:45,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:45,488 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 01:59:45,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/c12badfd1/d6e4be5e2b59408b86c3836e69c82535/FLAGc15b440f2 [2021-11-07 01:59:45,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/data/c12badfd1/d6e4be5e2b59408b86c3836e69c82535 [2021-11-07 01:59:45,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:45,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:45,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:45,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:45,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:45,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:45" (1/1) ... [2021-11-07 01:59:45,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169921d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:45, skipping insertion in model container [2021-11-07 01:59:45,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:45" (1/1) ... [2021-11-07 01:59:45,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:46,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:46,797 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2021-11-07 01:59:46,797 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2021-11-07 01:59:47,157 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_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2021-11-07 01:59:48,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:48,389 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:59:48,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:48,617 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2021-11-07 01:59:48,617 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2021-11-07 01:59:48,642 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_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2021-11-07 01:59:48,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:48,979 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:59:49,142 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2021-11-07 01:59:49,143 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2021-11-07 01:59:49,152 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_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2021-11-07 01:59:49,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:49,603 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:59:49,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49 WrapperNode [2021-11-07 01:59:49,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:49,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:49,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:59:49,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:59:49,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:49,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:50,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:50,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:59:50,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:59:50,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:59:50,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:50,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:51,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:51,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:51,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:51,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:51,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:52,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:59:52,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:59:52,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:59:52,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:59:52,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (1/1) ... [2021-11-07 01:59:52,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:52,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:59:52,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:59:52,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:59:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:59:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:59:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:59:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:59:52,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:59:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 01:59:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:59:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:59:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:59:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:59:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:59:52,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:59:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:59:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:59:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:59:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:59:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:59:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:59:52,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:59:52,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:01:42,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:01:42,651 INFO L299 CfgBuilder]: Removed 7639 assume(true) statements. [2021-11-07 02:01:42,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:42 BoogieIcfgContainer [2021-11-07 02:01:42,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:01:42,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:01:42,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:01:42,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:01:42,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:59:45" (1/3) ... [2021-11-07 02:01:42,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7659458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:42, skipping insertion in model container [2021-11-07 02:01:42,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:49" (2/3) ... [2021-11-07 02:01:42,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7659458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:01:42, skipping insertion in model container [2021-11-07 02:01:42,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:01:42" (3/3) ... [2021-11-07 02:01:42,667 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 02:01:42,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:01:42,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-07 02:01:42,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:01:42,755 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 [2021-11-07 02:01:42,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-07 02:01:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 5954 states, 5936 states have (on average 1.2784703504043127) internal successors, (7589), 5953 states have internal predecessors, (7589), 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) [2021-11-07 02:01:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 02:01:42,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:42,869 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, 1, 1, 1, 1, 1] [2021-11-07 02:01:42,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:01:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 108145079, now seen corresponding path program 1 times [2021-11-07 02:01:42,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:42,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788744069] [2021-11-07 02:01:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:42,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:42,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:42,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:01:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:44,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:01:44,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:44,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:45,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:45,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788744069] [2021-11-07 02:01:45,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788744069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:45,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:45,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:01:45,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802424931] [2021-11-07 02:01:45,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:45,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:45,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:45,114 INFO L87 Difference]: Start difference. First operand has 5954 states, 5936 states have (on average 1.2784703504043127) internal successors, (7589), 5953 states have internal predecessors, (7589), 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 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-11-07 02:01:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:45,502 INFO L93 Difference]: Finished difference Result 11905 states and 15175 transitions. [2021-11-07 02:01:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:01:45,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 41 [2021-11-07 02:01:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:45,563 INFO L225 Difference]: With dead ends: 11905 [2021-11-07 02:01:45,564 INFO L226 Difference]: Without dead ends: 5899 [2021-11-07 02:01:45,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:01:45,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2021-11-07 02:01:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 5899. [2021-11-07 02:01:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5899 states, 5882 states have (on average 1.2589255355321318) internal successors, (7405), 5898 states have internal predecessors, (7405), 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) [2021-11-07 02:01:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5899 states to 5899 states and 7405 transitions. [2021-11-07 02:01:46,051 INFO L78 Accepts]: Start accepts. Automaton has 5899 states and 7405 transitions. Word has length 41 [2021-11-07 02:01:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:46,051 INFO L470 AbstractCegarLoop]: Abstraction has 5899 states and 7405 transitions. [2021-11-07 02:01:46,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-11-07 02:01:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5899 states and 7405 transitions. [2021-11-07 02:01:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 02:01:46,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:46,056 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] [2021-11-07 02:01:46,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:46,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:01:46,276 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:01:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 346404343, now seen corresponding path program 1 times [2021-11-07 02:01:46,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:46,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596076276] [2021-11-07 02:01:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:46,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:46,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:46,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:46,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:01:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:47,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:01:47,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:48,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:48,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:48,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596076276] [2021-11-07 02:01:48,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596076276] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:48,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [26180673] [2021-11-07 02:01:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:48,581 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:01:48,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:01:48,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 02:01:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:49,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:01:49,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:50,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:50,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [26180673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:50,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:01:50,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:01:50,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576223939] [2021-11-07 02:01:50,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:50,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:50,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:01:50,384 INFO L87 Difference]: Start difference. First operand 5899 states and 7405 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 02:01:51,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:51,930 INFO L93 Difference]: Finished difference Result 27513 states and 34398 transitions. [2021-11-07 02:01:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:01:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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 43 [2021-11-07 02:01:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:52,079 INFO L225 Difference]: With dead ends: 27513 [2021-11-07 02:01:52,079 INFO L226 Difference]: Without dead ends: 21651 [2021-11-07 02:01:52,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:01:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21651 states. [2021-11-07 02:01:52,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21651 to 10921. [2021-11-07 02:01:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10921 states, 10904 states have (on average 1.2525678650036685) internal successors, (13658), 10920 states have internal predecessors, (13658), 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) [2021-11-07 02:01:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 13658 transitions. [2021-11-07 02:01:52,674 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 13658 transitions. Word has length 43 [2021-11-07 02:01:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:01:52,675 INFO L470 AbstractCegarLoop]: Abstraction has 10921 states and 13658 transitions. [2021-11-07 02:01:52,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 02:01:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 13658 transitions. [2021-11-07 02:01:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:01:52,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:01:52,680 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] [2021-11-07 02:01:52,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:52,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:01:53,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:53,099 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:01:53,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:01:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 950071488, now seen corresponding path program 1 times [2021-11-07 02:01:53,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:01:53,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101011852] [2021-11-07 02:01:53,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:53,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:01:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:01:53,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:01:53,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:01:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:54,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:01:54,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:54,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:54,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:55,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:55,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101011852] [2021-11-07 02:01:55,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101011852] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:01:55,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1492249227] [2021-11-07 02:01:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:01:55,187 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:01:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:01:55,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:01:55,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 02:01:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:01:56,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:01:56,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:01:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:56,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:01:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:01:56,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1492249227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:56,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:01:56,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:01:56,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97482368] [2021-11-07 02:01:56,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:01:56,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:56,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:01:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:01:56,911 INFO L87 Difference]: Start difference. First operand 10921 states and 13658 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 02:01:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:01:58,922 INFO L93 Difference]: Finished difference Result 52623 states and 65665 transitions. [2021-11-07 02:01:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:01:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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 44 [2021-11-07 02:01:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:01:59,036 INFO L225 Difference]: With dead ends: 52623 [2021-11-07 02:01:59,036 INFO L226 Difference]: Without dead ends: 41739 [2021-11-07 02:01:59,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:01:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41739 states. [2021-11-07 02:02:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41739 to 21571. [2021-11-07 02:02:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21571 states, 21554 states have (on average 1.2517398162754012) internal successors, (26980), 21570 states have internal predecessors, (26980), 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) [2021-11-07 02:02:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21571 states to 21571 states and 26980 transitions. [2021-11-07 02:02:00,299 INFO L78 Accepts]: Start accepts. Automaton has 21571 states and 26980 transitions. Word has length 44 [2021-11-07 02:02:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:00,300 INFO L470 AbstractCegarLoop]: Abstraction has 21571 states and 26980 transitions. [2021-11-07 02:02:00,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-07 02:02:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 21571 states and 26980 transitions. [2021-11-07 02:02:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 02:02:00,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:00,305 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] [2021-11-07 02:02:00,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:00,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:00,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:00,726 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:02:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1811082799, now seen corresponding path program 1 times [2021-11-07 02:02:00,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:00,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273535708] [2021-11-07 02:02:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:00,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:00,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:00,730 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:00,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:02:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:02:02,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:02,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:02,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:02,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273535708] [2021-11-07 02:02:02,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273535708] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:02,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [775982277] [2021-11-07 02:02:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:02,915 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:02,942 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:02,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 02:02:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:04,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:02:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:04,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:02:04,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:02:04,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [775982277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:04,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:02:04,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:02:04,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084967862] [2021-11-07 02:02:04,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:02:04,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:04,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:02:04,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:02:04,551 INFO L87 Difference]: Start difference. First operand 21571 states and 26980 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 02:02:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:07,001 INFO L93 Difference]: Finished difference Result 104473 states and 130388 transitions. [2021-11-07 02:02:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:02:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 45 [2021-11-07 02:02:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:07,242 INFO L225 Difference]: With dead ends: 104473 [2021-11-07 02:02:07,242 INFO L226 Difference]: Without dead ends: 82939 [2021-11-07 02:02:07,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:02:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82939 states. [2021-11-07 02:02:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82939 to 42674. [2021-11-07 02:02:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42674 states, 42657 states have (on average 1.250814637691352) internal successors, (53356), 42673 states have internal predecessors, (53356), 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) [2021-11-07 02:02:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42674 states to 42674 states and 53356 transitions. [2021-11-07 02:02:09,674 INFO L78 Accepts]: Start accepts. Automaton has 42674 states and 53356 transitions. Word has length 45 [2021-11-07 02:02:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:09,674 INFO L470 AbstractCegarLoop]: Abstraction has 42674 states and 53356 transitions. [2021-11-07 02:02:09,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-07 02:02:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 42674 states and 53356 transitions. [2021-11-07 02:02:09,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 02:02:09,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:09,679 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] [2021-11-07 02:02:09,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:09,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:10,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:10,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:02:10,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1507519078, now seen corresponding path program 1 times [2021-11-07 02:02:10,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:10,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291863409] [2021-11-07 02:02:10,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:10,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:10,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:10,096 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:10,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:02:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:11,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:02:11,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:11,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:02:12,200 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:12,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291863409] [2021-11-07 02:02:12,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291863409] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:12,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [657632973] [2021-11-07 02:02:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:12,200 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:12,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:12,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:12,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:02:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:13,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:02:13,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:02:13,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:02:13,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [657632973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:13,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:02:13,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 02:02:13,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362221028] [2021-11-07 02:02:13,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:02:13,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:13,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:02:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:02:13,901 INFO L87 Difference]: Start difference. First operand 42674 states and 53356 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-07 02:02:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:20,026 INFO L93 Difference]: Finished difference Result 207578 states and 259022 transitions. [2021-11-07 02:02:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:02:20,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 46 [2021-11-07 02:02:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:20,454 INFO L225 Difference]: With dead ends: 207578 [2021-11-07 02:02:20,454 INFO L226 Difference]: Without dead ends: 164941 [2021-11-07 02:02:20,551 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:02:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164941 states. [2021-11-07 02:02:25,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164941 to 84485. [2021-11-07 02:02:25,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84485 states, 84468 states have (on average 1.2498224179570963) internal successors, (105570), 84484 states have internal predecessors, (105570), 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) [2021-11-07 02:02:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84485 states to 84485 states and 105570 transitions. [2021-11-07 02:02:25,494 INFO L78 Accepts]: Start accepts. Automaton has 84485 states and 105570 transitions. Word has length 46 [2021-11-07 02:02:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:25,495 INFO L470 AbstractCegarLoop]: Abstraction has 84485 states and 105570 transitions. [2021-11-07 02:02:25,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-07 02:02:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 84485 states and 105570 transitions. [2021-11-07 02:02:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:02:25,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:25,502 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-11-07 02:02:25,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:25,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-07 02:02:25,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:25,921 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:02:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 424248866, now seen corresponding path program 1 times [2021-11-07 02:02:25,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:25,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674411588] [2021-11-07 02:02:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:25,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:25,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:25,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:25,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:02:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:27,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:02:27,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:27,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:02:27,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:02:28,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:02:28,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674411588] [2021-11-07 02:02:28,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674411588] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:02:28,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [730823704] [2021-11-07 02:02:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:28,029 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:02:28,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:02:28,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:02:28,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e2698a-1ec6-4f1e-aaf1-c57e5b05f355/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:02:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:29,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 02:02:29,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:02:29,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:02:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 02:02:29,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [730823704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:02:29,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:02:29,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 02:02:29,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243256907] [2021-11-07 02:02:29,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:02:29,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:02:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:02:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:02:29,970 INFO L87 Difference]: Start difference. First operand 84485 states and 105570 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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)