./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.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_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/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_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/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_61ef9739-343b-4a93-a84d-e6857fe48015/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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:46,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:46,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:46:46,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:46,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:46,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:46,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:46,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:46,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:46,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:46,361 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:46,361 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:46,362 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:46,363 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:46:46,364 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:46,364 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:46,364 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:46:46,365 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:46:46,365 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:46,366 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:46:46,366 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:46:46,367 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:46:46,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:46:46,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:46:46,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:46,369 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:46:46,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:46:46,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:46:46,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:46,370 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:46:46,372 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:46:46,372 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:46:46,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:46,372 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:46:46,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:46:46,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:46:46,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:46,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:46,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:46,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:46,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:46,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:46,375 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:46:46,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:46:46,376 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:46,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:46,376 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_61ef9739-343b-4a93-a84d-e6857fe48015/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2023-11-19 04:46:46,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:46,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:46,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:46,763 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:46,765 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:46,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-19 04:46:50,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:50,306 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:50,306 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-19 04:46:50,316 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data/2dbcc4797/f19bc55dd7d24832b33edf2c17158eeb/FLAG0a280f8b1 [2023-11-19 04:46:50,332 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data/2dbcc4797/f19bc55dd7d24832b33edf2c17158eeb [2023-11-19 04:46:50,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:50,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:50,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:50,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:50,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:50,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:50" (1/1) ... [2023-11-19 04:46:50,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679de70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:50, skipping insertion in model container [2023-11-19 04:46:50,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:50" (1/1) ... [2023-11-19 04:46:50,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:50,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:50,732 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 04:46:50,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d3626d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:50, skipping insertion in model container [2023-11-19 04:46:50,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:50,735 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:46:50,737 INFO L158 Benchmark]: Toolchain (without parser) took 398.92ms. Allocated memory is still 140.5MB. Free memory was 94.3MB in the beginning and 83.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:46:50,738 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory was 115.0MB in the beginning and 115.0MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:50,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.97ms. Allocated memory is still 140.5MB. Free memory was 94.3MB in the beginning and 83.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:46:50,741 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory was 115.0MB in the beginning and 115.0MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.97ms. Allocated memory is still 140.5MB. Free memory was 94.3MB in the beginning and 83.8MB 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: 157]: 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_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/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_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/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_61ef9739-343b-4a93-a84d-e6857fe48015/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 dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:53,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:53,440 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:46:53,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:53,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:53,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:53,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:53,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:53,510 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:53,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:53,516 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:53,516 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:53,517 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:53,518 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:53,519 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:53,519 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:53,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:46:53,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:46:53,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:53,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:46:53,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:46:53,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:46:53,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:53,524 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:46:53,525 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:46:53,525 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:46:53,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:53,526 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:46:53,526 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:46:53,527 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:46:53,528 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:46:53,529 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:46:53,529 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:53,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:53,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:46:53,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:53,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:53,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:53,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:53,532 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:46:53,532 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:46:53,532 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:53,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:53,533 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_61ef9739-343b-4a93-a84d-e6857fe48015/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbff9cba9b3794b18d55ca52c1abf6279404a7b220f91d79730a04b586f9ee44 [2023-11-19 04:46:53,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:54,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:54,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:54,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:54,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:54,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-19 04:46:57,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:57,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:57,661 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-19 04:46:57,670 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data/b878a981b/7805a9f223ee42d196650d3826c82e2d/FLAGcf57615dd [2023-11-19 04:46:57,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/data/b878a981b/7805a9f223ee42d196650d3826c82e2d [2023-11-19 04:46:57,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:57,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:57,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:57,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:57,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:57,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:57" (1/1) ... [2023-11-19 04:46:57,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77bbd8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:57, skipping insertion in model container [2023-11-19 04:46:57,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:57" (1/1) ... [2023-11-19 04:46:57,732 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:58,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:58,033 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:46:58,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:58,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:58,102 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:58,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:58,175 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:58,175 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:58,183 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:58,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58 WrapperNode [2023-11-19 04:46:58,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:58,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:58,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:58,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:58,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,278 INFO L138 Inliner]: procedures = 29, calls = 77, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 308 [2023-11-19 04:46:58,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:58,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:58,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:58,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:58,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:58,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:58,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:58,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:58,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (1/1) ... [2023-11-19 04:46:58,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:58,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:58,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61ef9739-343b-4a93-a84d-e6857fe48015/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:46:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:46:58,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:46:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:46:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 04:46:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 04:46:58,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 04:46:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 04:46:58,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 04:46:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 04:46:58,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 04:46:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 04:46:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:46:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:46:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:46:58,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:46:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:46:58,465 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 04:46:58,675 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:58,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:59,493 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:59,857 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:59,858 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 04:46:59,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:59 BoogieIcfgContainer [2023-11-19 04:46:59,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:59,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:59,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:59,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:59,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:57" (1/3) ... [2023-11-19 04:46:59,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420456a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:59, skipping insertion in model container [2023-11-19 04:46:59,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:58" (2/3) ... [2023-11-19 04:46:59,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420456a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:59, skipping insertion in model container [2023-11-19 04:46:59,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:59" (3/3) ... [2023-11-19 04:46:59,882 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-11-19 04:46:59,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:59,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 04:46:59,902 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:47:00,031 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 04:47:00,080 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:47:00,102 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 266 transitions, 560 flow [2023-11-19 04:47:00,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 266 transitions, 560 flow [2023-11-19 04:47:00,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 266 transitions, 560 flow [2023-11-19 04:47:00,300 INFO L124 PetriNetUnfolderBase]: 18/262 cut-off events. [2023-11-19 04:47:00,300 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 04:47:00,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 262 events. 18/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 206. Up to 2 conditions per place. [2023-11-19 04:47:00,316 INFO L119 LiptonReduction]: Number of co-enabled transitions 3608 [2023-11-19 04:47:46,281 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 125 DAG size of output: 122 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)