./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:36:56,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:36:56,148 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 20:36:56,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:36:56,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:36:56,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:36:56,214 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:36:56,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:36:56,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:36:56,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:36:56,232 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:36:56,233 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:36:56,234 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:36:56,236 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:36:56,236 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:36:56,237 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:36:56,237 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:36:56,238 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:36:56,238 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:36:56,239 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:36:56,239 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:36:56,240 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:36:56,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:36:56,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:36:56,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:36:56,243 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:36:56,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:36:56,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:36:56,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:36:56,245 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:36:56,246 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:36:56,247 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:36:56,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:36:56,247 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:36:56,248 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:36:56,248 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:36:56,248 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:36:56,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:36:56,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:36:56,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:36:56,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:36:56,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:36:56,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:36:56,251 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:36:56,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:36:56,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:36:56,252 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:36:56,253 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:36:56,253 INFO L153 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_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 [2023-11-23 20:36:56,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:36:56,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:36:56,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:36:56,611 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:36:56,611 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:36:56,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-11-23 20:36:59,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:00,278 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:00,279 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-11-23 20:37:00,308 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data/f8878a207/13eb5a135163421b8e1250cb952b327c/FLAG68f06d071 [2023-11-23 20:37:00,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data/f8878a207/13eb5a135163421b8e1250cb952b327c [2023-11-23 20:37:00,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:00,328 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:00,329 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:00,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:00,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:00,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4487dbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:00, skipping insertion in model container [2023-11-23 20:37:00,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:00" (1/1) ... [2023-11-23 20:37:00,449 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:02,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:02,141 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 20:37:02,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@444acd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:02, skipping insertion in model container [2023-11-23 20:37:02,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:02,143 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 20:37:02,145 INFO L158 Benchmark]: Toolchain (without parser) took 1816.31ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 69.0MB in the beginning and 107.1MB in the end (delta: -38.1MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2023-11-23 20:37:02,146 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 119.5MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:37:02,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1813.61ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 69.0MB in the beginning and 107.1MB in the end (delta: -38.1MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2023-11-23 20:37:02,150 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 119.5MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1813.61ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 69.0MB in the beginning and 107.1MB in the end (delta: -38.1MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:37:04,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:37:04,830 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 20:37:04,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:37:04,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:37:04,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:37:04,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:37:04,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:37:04,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:37:04,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:37:04,891 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:37:04,892 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:37:04,892 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:37:04,897 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:37:04,898 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:37:04,898 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:37:04,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:37:04,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:37:04,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:37:04,902 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:37:04,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:37:04,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:37:04,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:37:04,904 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:37:04,904 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:37:04,904 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:37:04,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:37:04,905 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:37:04,906 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:37:04,906 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:37:04,908 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:37:04,908 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:37:04,909 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:37:04,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:37:04,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:37:04,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:37:04,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:37:04,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:04,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:37:04,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:37:04,912 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:37:04,912 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:37:04,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:37:04,913 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:37:04,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:37:04,914 INFO L153 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_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 [2023-11-23 20:37:05,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:37:05,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:37:05,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:37:05,344 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:37:05,345 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:37:05,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-11-23 20:37:08,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:37:08,958 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:37:08,958 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-11-23 20:37:09,000 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data/fab0e9198/9d0a28c774f14f2aa6990368fb35354b/FLAGb20b3cfc2 [2023-11-23 20:37:09,022 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/data/fab0e9198/9d0a28c774f14f2aa6990368fb35354b [2023-11-23 20:37:09,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:37:09,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:37:09,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:09,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:37:09,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:37:09,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:09" (1/1) ... [2023-11-23 20:37:09,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4d3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:09, skipping insertion in model container [2023-11-23 20:37:09,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:37:09" (1/1) ... [2023-11-23 20:37:09,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:10,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:10,772 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 20:37:10,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:37:11,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:11,152 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:37:11,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:37:11,621 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:37:11,629 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:37:11,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11 WrapperNode [2023-11-23 20:37:11,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:37:11,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:11,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:37:11,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:37:11,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,817 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 985 [2023-11-23 20:37:11,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:37:11,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:37:11,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:37:11,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:37:11,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:37:11,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:37:11,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:37:11,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:37:11,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (1/1) ... [2023-11-23 20:37:11,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:37:12,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:37:12,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:37:12,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:37:12,076 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-23 20:37:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-23 20:37:12,077 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-23 20:37:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-11-23 20:37:12,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 20:37:12,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-23 20:37:12,079 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-23 20:37:12,080 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-23 20:37:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:37:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-11-23 20:37:12,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:37:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-23 20:37:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-23 20:37:12,081 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-23 20:37:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 20:37:12,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-23 20:37:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-23 20:37:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-23 20:37:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-23 20:37:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-11-23 20:37:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 20:37:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-23 20:37:12,084 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-23 20:37:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:37:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 20:37:12,085 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:37:12,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 20:37:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-23 20:37:12,086 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-23 20:37:12,086 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-23 20:37:12,087 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-23 20:37:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:37:12,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:37:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-23 20:37:12,088 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-23 20:37:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-11-23 20:37:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:37:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-11-23 20:37:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 20:37:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:37:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:37:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-23 20:37:12,090 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-23 20:37:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:37:12,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 20:37:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-23 20:37:12,091 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-23 20:37:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-23 20:37:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-23 20:37:12,091 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-23 20:37:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-23 20:37:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-11-23 20:37:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:37:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 20:37:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 20:37:12,093 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 20:37:12,093 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-23 20:37:12,093 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-23 20:37:12,094 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-23 20:37:12,094 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-23 20:37:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-23 20:37:12,095 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-23 20:37:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-23 20:37:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-23 20:37:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-23 20:37:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-23 20:37:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-23 20:37:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-11-23 20:37:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-23 20:37:12,097 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-23 20:37:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-23 20:37:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-23 20:37:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-23 20:37:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-23 20:37:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-23 20:37:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-11-23 20:37:12,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-11-23 20:37:12,482 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:37:12,487 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:37:17,367 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:37:17,584 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:37:17,585 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 20:37:17,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:17 BoogieIcfgContainer [2023-11-23 20:37:17,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:37:17,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:37:17,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:37:17,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:37:17,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:37:09" (1/3) ... [2023-11-23 20:37:17,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483836c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:17, skipping insertion in model container [2023-11-23 20:37:17,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:37:11" (2/3) ... [2023-11-23 20:37:17,594 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@483836c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:37:17, skipping insertion in model container [2023-11-23 20:37:17,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:37:17" (3/3) ... [2023-11-23 20:37:17,595 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inb.i [2023-11-23 20:37:17,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:37:17,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-11-23 20:37:17,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:37:17,685 INFO L357 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6561714d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:37:17,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-11-23 20:37:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 293 states have (on average 1.993174061433447) internal successors, (584), 504 states have internal predecessors, (584), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-11-23 20:37:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:37:17,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:17,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:37:17,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 20:37:17,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash 40375456, now seen corresponding path program 1 times [2023-11-23 20:37:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:17,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503503021] [2023-11-23 20:37:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:17,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:17,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:17,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:17,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 20:37:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:18,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:18,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:18,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:18,460 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:18,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503503021] [2023-11-23 20:37:18,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503503021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:18,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:18,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829614727] [2023-11-23 20:37:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:18,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:37:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:37:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:37:18,513 INFO L87 Difference]: Start difference. First operand has 603 states, 293 states have (on average 1.993174061433447) internal successors, (584), 504 states have internal predecessors, (584), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:37:20,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:22,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:24,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:28,731 INFO L93 Difference]: Finished difference Result 1091 states and 1328 transitions. [2023-11-23 20:37:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:37:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 20:37:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:28,773 INFO L225 Difference]: With dead ends: 1091 [2023-11-23 20:37:28,773 INFO L226 Difference]: Without dead ends: 1089 [2023-11-23 20:37:28,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:37:28,781 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 632 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:28,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1970 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1249 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2023-11-23 20:37:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-11-23 20:37:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 883. [2023-11-23 20:37:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 490 states have (on average 1.969387755102041) internal successors, (965), 712 states have internal predecessors, (965), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-23 20:37:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1241 transitions. [2023-11-23 20:37:28,921 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1241 transitions. Word has length 4 [2023-11-23 20:37:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:28,922 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1241 transitions. [2023-11-23 20:37:28,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:37:28,922 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1241 transitions. [2023-11-23 20:37:28,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:37:28,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:28,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 20:37:28,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:29,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:29,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 20:37:29,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash 40375457, now seen corresponding path program 1 times [2023-11-23 20:37:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:29,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615188991] [2023-11-23 20:37:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:29,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:29,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:29,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:29,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 20:37:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:29,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 20:37:29,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:29,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:29,764 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615188991] [2023-11-23 20:37:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615188991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:29,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:29,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:37:29,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927592027] [2023-11-23 20:37:29,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:29,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:37:29,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:37:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:37:29,767 INFO L87 Difference]: Start difference. First operand 883 states and 1241 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:37:31,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:33,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:35,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:39,858 INFO L93 Difference]: Finished difference Result 1004 states and 1322 transitions. [2023-11-23 20:37:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 20:37:39,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 20:37:39,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:39,869 INFO L225 Difference]: With dead ends: 1004 [2023-11-23 20:37:39,869 INFO L226 Difference]: Without dead ends: 1004 [2023-11-23 20:37:39,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:37:39,871 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 245 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:39,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2156 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1002 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2023-11-23 20:37:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-11-23 20:37:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 946. [2023-11-23 20:37:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 521 states have (on average 1.9289827255278311) internal successors, (1005), 744 states have internal predecessors, (1005), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 20:37:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1319 transitions. [2023-11-23 20:37:39,938 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1319 transitions. Word has length 4 [2023-11-23 20:37:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:39,939 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1319 transitions. [2023-11-23 20:37:39,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 20:37:39,939 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1319 transitions. [2023-11-23 20:37:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:37:39,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:39,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:39,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:40,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 20:37:40,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:40,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1266514677, now seen corresponding path program 1 times [2023-11-23 20:37:40,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:40,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209164743] [2023-11-23 20:37:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:40,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:40,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:40,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:40,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 20:37:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:40,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:37:40,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:40,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:40,797 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209164743] [2023-11-23 20:37:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209164743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:40,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 20:37:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853198713] [2023-11-23 20:37:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:40,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:37:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:40,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:37:40,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:40,800 INFO L87 Difference]: Start difference. First operand 946 states and 1319 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:37:42,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:44,775 INFO L93 Difference]: Finished difference Result 1145 states and 1399 transitions. [2023-11-23 20:37:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:37:44,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 20:37:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:44,783 INFO L225 Difference]: With dead ends: 1145 [2023-11-23 20:37:44,784 INFO L226 Difference]: Without dead ends: 1145 [2023-11-23 20:37:44,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:37:44,785 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 609 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:44,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1029 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 20:37:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2023-11-23 20:37:44,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 945. [2023-11-23 20:37:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 521 states have (on average 1.9193857965451055) internal successors, (1000), 743 states have internal predecessors, (1000), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 20:37:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1314 transitions. [2023-11-23 20:37:44,830 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1314 transitions. Word has length 9 [2023-11-23 20:37:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:44,830 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1314 transitions. [2023-11-23 20:37:44,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:37:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1314 transitions. [2023-11-23 20:37:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:37:44,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:44,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:44,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:45,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:45,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 20:37:45,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:45,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1266514676, now seen corresponding path program 1 times [2023-11-23 20:37:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:45,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547560483] [2023-11-23 20:37:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:45,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:45,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:45,041 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:45,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 20:37:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:37:45,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:37:45,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:37:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:37:45,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:37:45,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:37:45,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547560483] [2023-11-23 20:37:45,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547560483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:37:45,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:37:45,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:37:45,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850532627] [2023-11-23 20:37:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:37:45,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 20:37:45,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:37:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 20:37:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:37:45,771 INFO L87 Difference]: Start difference. First operand 945 states and 1314 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:37:47,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:49,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 20:37:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:37:52,279 INFO L93 Difference]: Finished difference Result 1008 states and 1326 transitions. [2023-11-23 20:37:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 20:37:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 20:37:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:37:52,286 INFO L225 Difference]: With dead ends: 1008 [2023-11-23 20:37:52,286 INFO L226 Difference]: Without dead ends: 1008 [2023-11-23 20:37:52,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 20:37:52,288 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 244 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:37:52,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1245 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 509 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2023-11-23 20:37:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-11-23 20:37:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 948. [2023-11-23 20:37:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 524 states have (on average 1.9141221374045803) internal successors, (1003), 746 states have internal predecessors, (1003), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-23 20:37:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1317 transitions. [2023-11-23 20:37:52,339 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1317 transitions. Word has length 9 [2023-11-23 20:37:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:37:52,341 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1317 transitions. [2023-11-23 20:37:52,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 20:37:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1317 transitions. [2023-11-23 20:37:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:37:52,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:37:52,342 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:37:52,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 20:37:52,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:52,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-11-23 20:37:52,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:37:52,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1643938270, now seen corresponding path program 1 times [2023-11-23 20:37:52,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:37:52,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789120830] [2023-11-23 20:37:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:37:52,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 20:37:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:37:52,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 20:37:52,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89142383-2813-40c4-a646-d82d12349ea9/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process