./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:05:12,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:05:12,465 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:05:12,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:05:12,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:05:12,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:05:12,502 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:05:12,503 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:05:12,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:05:12,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:05:12,505 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:05:12,506 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:05:12,506 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:05:12,507 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:05:12,508 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:05:12,508 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:05:12,509 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:05:12,510 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:05:12,510 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:05:12,511 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:05:12,511 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:05:12,512 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:05:12,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:05:12,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:05:12,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:05:12,515 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:05:12,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:05:12,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:05:12,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:05:12,516 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:05:12,517 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:05:12,517 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:05:12,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:05:12,518 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:05:12,518 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:05:12,519 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:05:12,519 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:05:12,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:05:12,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:05:12,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:05:12,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:05:12,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:05:12,521 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:05:12,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:05:12,522 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:05:12,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:05:12,522 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_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2023-11-06 21:05:12,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:05:12,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:05:12,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:05:12,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:05:12,910 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:05:12,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-06 21:05:16,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:05:16,271 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:05:16,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-06 21:05:16,281 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data/a9c14e2c5/6bcee2c55d004d4a8f24afe6d1bebd49/FLAG8a73a1807 [2023-11-06 21:05:16,304 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data/a9c14e2c5/6bcee2c55d004d4a8f24afe6d1bebd49 [2023-11-06 21:05:16,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:05:16,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:05:16,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:05:16,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:05:16,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:05:16,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:05:16" (1/1) ... [2023-11-06 21:05:16,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc720fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:16, skipping insertion in model container [2023-11-06 21:05:16,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:05:16" (1/1) ... [2023-11-06 21:05:16,374 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:05:16,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:05:16,676 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) [2023-11-06 21:05:16,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b446ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:16, skipping insertion in model container [2023-11-06 21:05:16,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:05:16,677 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:05:16,680 INFO L158 Benchmark]: Toolchain (without parser) took 361.58ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 71.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:05:16,681 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory was 92.5MB in the beginning and 92.5MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:05:16,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.25ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 71.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:05:16,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory was 92.5MB in the beginning and 92.5MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.25ms. Allocated memory is still 127.9MB. Free memory was 82.3MB in the beginning and 71.8MB 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: 160]: 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_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:05:19,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:05:19,351 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 21:05:19,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:05:19,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:05:19,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:05:19,401 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:05:19,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:05:19,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:05:19,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:05:19,405 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:05:19,405 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:05:19,406 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:05:19,406 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:05:19,407 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:05:19,408 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:05:19,408 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:05:19,409 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:05:19,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:05:19,410 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:05:19,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:05:19,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:05:19,412 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:05:19,412 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:05:19,413 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:05:19,413 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:05:19,414 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:05:19,414 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:05:19,415 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:05:19,415 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:05:19,416 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:05:19,416 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:05:19,416 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:05:19,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:05:19,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:05:19,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:05:19,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:05:19,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:05:19,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:05:19,420 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:05:19,420 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:05:19,421 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:05:19,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:05:19,422 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_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2023-11-06 21:05:19,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:05:19,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:05:19,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:05:19,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:05:19,901 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:05:19,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-06 21:05:23,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:05:23,356 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:05:23,358 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-06 21:05:23,368 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data/8acb711d9/6aed1a8edc4f464eb0ae475707843757/FLAG4312eddd6 [2023-11-06 21:05:23,390 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/data/8acb711d9/6aed1a8edc4f464eb0ae475707843757 [2023-11-06 21:05:23,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:05:23,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:05:23,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:05:23,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:05:23,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:05:23,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:23,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa92ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23, skipping insertion in model container [2023-11-06 21:05:23,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:23,466 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:05:23,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:05:23,797 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:05:23,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:05:23,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:05:23,873 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:05:23,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:05:23,957 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:05:23,958 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:05:23,966 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:05:23,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23 WrapperNode [2023-11-06 21:05:23,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:05:23,969 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:05:23,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:05:23,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:05:23,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,083 INFO L138 Inliner]: procedures = 29, calls = 84, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 348 [2023-11-06 21:05:24,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:05:24,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:05:24,099 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:05:24,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:05:24,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:05:24,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:05:24,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:05:24,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:05:24,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (1/1) ... [2023-11-06 21:05:24,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:05:24,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:05:24,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:05:24,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef92da66-834a-495b-8a6c-c1fda118c68b/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:05:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:05:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:05:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:05:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:05:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:05:24,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:05:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:05:24,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:05:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:05:24,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:05:24,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 21:05:24,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 21:05:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:05:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:05:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:05:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:05:24,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:05:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:05:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:05:24,315 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:05:24,491 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:05:24,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:05:25,393 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:05:25,773 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:05:25,773 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-06 21:05:25,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:05:25 BoogieIcfgContainer [2023-11-06 21:05:25,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:05:25,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:05:25,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:05:25,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:05:25,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:05:23" (1/3) ... [2023-11-06 21:05:25,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1503c2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:05:25, skipping insertion in model container [2023-11-06 21:05:25,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:05:23" (2/3) ... [2023-11-06 21:05:25,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1503c2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:05:25, skipping insertion in model container [2023-11-06 21:05:25,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:05:25" (3/3) ... [2023-11-06 21:05:25,790 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-11-06 21:05:25,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:05:25,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-06 21:05:25,810 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:05:25,956 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 21:05:26,006 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:05:26,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 307 transitions, 642 flow [2023-11-06 21:05:26,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 307 transitions, 642 flow [2023-11-06 21:05:26,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 307 transitions, 642 flow [2023-11-06 21:05:26,207 INFO L124 PetriNetUnfolderBase]: 22/303 cut-off events. [2023-11-06 21:05:26,207 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 21:05:26,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 303 events. 22/303 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 248. Up to 2 conditions per place. [2023-11-06 21:05:26,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 3860