./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/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_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:42:07,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:42:07,241 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:42:07,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:42:07,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:42:07,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:42:07,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:42:07,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:42:07,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:42:07,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:42:07,325 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:42:07,326 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:42:07,327 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:42:07,328 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:42:07,329 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:42:07,329 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:42:07,330 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:42:07,330 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:42:07,330 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:42:07,331 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:42:07,331 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:42:07,332 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:42:07,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:42:07,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:42:07,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:42:07,335 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:42:07,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:42:07,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:42:07,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:42:07,336 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:42:07,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:42:07,338 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:42:07,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:42:07,339 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:42:07,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:42:07,339 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:42:07,346 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:42:07,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:42:07,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:42:07,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:07,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:42:07,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:42:07,348 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:42:07,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:42:07,348 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:42:07,348 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:42:07,348 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_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2023-11-12 00:42:07,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:42:07,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:42:07,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:42:07,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:42:07,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:42:07,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-12 00:42:10,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:42:11,213 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:42:11,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-12 00:42:11,227 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data/c75d9741b/7a0fbdd2d18b4ae39d10dbc2e01f26ac/FLAG390fa5f83 [2023-11-12 00:42:11,251 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data/c75d9741b/7a0fbdd2d18b4ae39d10dbc2e01f26ac [2023-11-12 00:42:11,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:42:11,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:42:11,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:11,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:42:11,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:42:11,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:11" (1/1) ... [2023-11-12 00:42:11,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7524205c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:11, skipping insertion in model container [2023-11-12 00:42:11,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:11" (1/1) ... [2023-11-12 00:42:11,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:42:11,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:11,511 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) [2023-11-12 00:42:11,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1400dee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:11, skipping insertion in model container [2023-11-12 00:42:11,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:11,513 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:42:11,514 INFO L158 Benchmark]: Toolchain (without parser) took 247.08ms. Allocated memory is still 178.3MB. Free memory was 146.6MB in the beginning and 135.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:42:11,515 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:42:11,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.62ms. Allocated memory is still 178.3MB. Free memory was 146.2MB in the beginning and 135.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:42:11,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 125.8MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.62ms. Allocated memory is still 178.3MB. Free memory was 146.2MB in the beginning and 135.7MB in the end (delta: 10.5MB). 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/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_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:42:14,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:42:14,197 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:42:14,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:42:14,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:42:14,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:42:14,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:42:14,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:42:14,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:42:14,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:42:14,267 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:42:14,267 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:42:14,268 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:42:14,270 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:42:14,270 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:42:14,271 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:42:14,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:42:14,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:42:14,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:42:14,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:42:14,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:42:14,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:42:14,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:42:14,276 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:42:14,276 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:42:14,276 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:42:14,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:42:14,277 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:42:14,278 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:42:14,278 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:42:14,279 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:42:14,280 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:42:14,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:42:14,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:42:14,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:42:14,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:42:14,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:14,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:42:14,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:42:14,283 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:42:14,283 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:42:14,283 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:42:14,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:42:14,284 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_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2023-11-12 00:42:14,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:42:14,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:42:14,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:42:14,720 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:42:14,720 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:42:14,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-12 00:42:17,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:42:18,064 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:42:18,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2023-11-12 00:42:18,074 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data/c36937d1b/a9547071fcc34cedbb6343d7cee03f84/FLAG40f915279 [2023-11-12 00:42:18,090 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/data/c36937d1b/a9547071fcc34cedbb6343d7cee03f84 [2023-11-12 00:42:18,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:42:18,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:42:18,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:18,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:42:18,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:42:18,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b687dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18, skipping insertion in model container [2023-11-12 00:42:18,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,150 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:42:18,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:18,425 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:42:18,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:42:18,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:18,501 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:42:18,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:42:18,604 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:18,605 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:42:18,611 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:42:18,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18 WrapperNode [2023-11-12 00:42:18,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:42:18,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:18,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:42:18,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:42:18,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,679 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 356 [2023-11-12 00:42:18,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:42:18,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:42:18,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:42:18,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:42:18,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,728 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:42:18,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:42:18,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:42:18,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:42:18,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (1/1) ... [2023-11-12 00:42:18,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:42:18,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:42:18,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:42:18,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b69d0171-d76b-423a-b5a9-646e58c4e3db/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:42:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:42:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:42:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:42:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:42:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:42:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:42:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:42:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:42:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:42:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:42:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 00:42:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 00:42:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:42:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:42:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:42:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:42:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:42:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:42:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:42:18,830 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:42:19,018 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:42:19,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:42:20,091 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:42:20,484 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:42:20,484 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 00:42:20,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:20 BoogieIcfgContainer [2023-11-12 00:42:20,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:42:20,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:42:20,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:42:20,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:42:20,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:42:18" (1/3) ... [2023-11-12 00:42:20,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a9806c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:20, skipping insertion in model container [2023-11-12 00:42:20,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:42:18" (2/3) ... [2023-11-12 00:42:20,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a9806c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:42:20, skipping insertion in model container [2023-11-12 00:42:20,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:42:20" (3/3) ... [2023-11-12 00:42:20,499 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-11-12 00:42:20,519 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:42:20,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-12 00:42:20,520 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:42:20,671 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 00:42:20,726 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:42:20,750 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 313 transitions, 654 flow [2023-11-12 00:42:20,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 313 transitions, 654 flow [2023-11-12 00:42:20,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 313 transitions, 654 flow [2023-11-12 00:42:20,872 INFO L124 PetriNetUnfolderBase]: 22/309 cut-off events. [2023-11-12 00:42:20,872 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 00:42:20,879 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. [2023-11-12 00:42:20,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 4600