./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ --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 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:30,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:30,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:22:30,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:30,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:30,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:30,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:30,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:30,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:30,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:30,983 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:30,983 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:30,984 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:30,986 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:22:30,986 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:30,987 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:30,987 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:22:30,988 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:22:30,988 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:30,989 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:22:30,989 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:22:30,990 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:22:30,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:22:30,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:22:30,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:30,992 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:30,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:30,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:30,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:30,994 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:22:30,996 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:22:30,996 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:22:30,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:30,996 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:22:30,997 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:22:30,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:30,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:30,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:30,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:30,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:30,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:30,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:30,999 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:22:30,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:22:31,000 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:31,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:31,001 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_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2023-11-19 05:22:31,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:31,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:31,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:31,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:31,355 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:31,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-19 05:22:34,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:34,906 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:34,907 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-19 05:22:34,923 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data/0840e8cfd/9ee80ce5122a4c8d978e278ec8812361/FLAGb4f5e200e [2023-11-19 05:22:34,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data/0840e8cfd/9ee80ce5122a4c8d978e278ec8812361 [2023-11-19 05:22:34,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:34,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:34,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:34,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:34,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:34,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:34" (1/1) ... [2023-11-19 05:22:34,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459d708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:34, skipping insertion in model container [2023-11-19 05:22:34,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:34" (1/1) ... [2023-11-19 05:22:35,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:35,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:35,302 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) [2023-11-19 05:22:35,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d4b13ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:35, skipping insertion in model container [2023-11-19 05:22:35,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:35,304 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:22:35,306 INFO L158 Benchmark]: Toolchain (without parser) took 352.95ms. Allocated memory is still 176.2MB. Free memory was 146.1MB in the beginning and 135.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:22:35,307 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:22:35,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.40ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 135.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:22:35,310 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.40ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 135.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 164]: 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_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ --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 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:38,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:38,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 05:22:38,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:38,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:38,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:38,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:38,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:38,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:38,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:38,233 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:38,233 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:38,234 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:38,236 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:38,236 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:38,237 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:38,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:22:38,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:22:38,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:38,240 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:38,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:38,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:38,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:38,242 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:22:38,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:22:38,243 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:22:38,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:38,244 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:22:38,244 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:22:38,245 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:22:38,246 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:22:38,246 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:38,247 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:38,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:38,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:22:38,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:38,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:38,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:38,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:38,249 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:22:38,250 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:38,250 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:38,250 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:38,250 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_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2023-11-19 05:22:38,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:38,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:38,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:38,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:38,650 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:38,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-19 05:22:41,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:42,192 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:42,193 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-19 05:22:42,212 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data/587597761/96b977d32c0d4423b497314035d179c4/FLAG34eaf6fc0 [2023-11-19 05:22:42,234 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/data/587597761/96b977d32c0d4423b497314035d179c4 [2023-11-19 05:22:42,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:42,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:42,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:42,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:42,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:42,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3369170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42, skipping insertion in model container [2023-11-19 05:22:42,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:42,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:42,630 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:22:42,635 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:42,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:42,674 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:42,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:42,730 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:22:42,731 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:22:42,739 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:42,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42 WrapperNode [2023-11-19 05:22:42,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:42,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:42,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:42,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:42,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,844 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 356 [2023-11-19 05:22:42,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:42,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:42,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:42,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:42,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:42,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:42,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:42,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:42,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (1/1) ... [2023-11-19 05:22:42,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:42,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:43,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:43,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08285b1b-ed92-4b05-a2c5-bed12f9d36d7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:22:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:22:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:22:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 05:22:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 05:22:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 05:22:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 05:22:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 05:22:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 05:22:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 05:22:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 05:22:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:22:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:22:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:22:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:22:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:22:43,173 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:22:43,407 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:43,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:44,766 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:45,165 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:45,166 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-19 05:22:45,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:45 BoogieIcfgContainer [2023-11-19 05:22:45,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:45,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:45,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:45,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:45,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:42" (1/3) ... [2023-11-19 05:22:45,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c5984c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:45, skipping insertion in model container [2023-11-19 05:22:45,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:42" (2/3) ... [2023-11-19 05:22:45,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c5984c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:45, skipping insertion in model container [2023-11-19 05:22:45,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:45" (3/3) ... [2023-11-19 05:22:45,202 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-11-19 05:22:45,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:45,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-19 05:22:45,225 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:22:45,349 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 05:22:45,390 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:22:45,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 313 transitions, 654 flow [2023-11-19 05:22:45,408 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 313 transitions, 654 flow [2023-11-19 05:22:45,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 313 transitions, 654 flow [2023-11-19 05:22:45,571 INFO L124 PetriNetUnfolderBase]: 22/309 cut-off events. [2023-11-19 05:22:45,571 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 05:22:45,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 309 events. 22/309 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 318 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 253. Up to 2 conditions per place. [2023-11-19 05:22:45,584 INFO L119 LiptonReduction]: Number of co-enabled transitions 4600