./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/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_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/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_6e660cd5-19bd-4b26-89b4-c38e3d779036/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:17:14,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:17:15,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:17:15,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:17:15,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:17:15,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:17:15,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:17:15,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:17:15,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:17:15,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:17:15,115 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:17:15,115 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:17:15,116 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:17:15,117 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:17:15,118 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:17:15,118 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:17:15,119 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:17:15,120 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:17:15,121 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:17:15,121 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:17:15,122 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:17:15,122 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:17:15,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:17:15,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:17:15,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:17:15,125 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:17:15,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:17:15,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:17:15,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:17:15,127 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:17:15,128 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:17:15,129 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:17:15,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:17:15,129 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:17:15,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:17:15,130 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:17:15,130 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:17:15,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:17:15,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:17:15,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:17:15,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:17:15,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:17:15,132 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:17:15,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:17:15,133 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:17:15,133 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:17:15,134 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_6e660cd5-19bd-4b26-89b4-c38e3d779036/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2023-11-19 05:17:15,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:17:15,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:17:15,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:17:15,523 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:17:15,524 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:17:15,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-19 05:17:18,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:17:18,966 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:17:18,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-19 05:17:18,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data/88c7d26a2/6e88fe21db1a4af59eff9f5d6274a6aa/FLAG913339202 [2023-11-19 05:17:19,316 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data/88c7d26a2/6e88fe21db1a4af59eff9f5d6274a6aa [2023-11-19 05:17:19,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:17:19,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:17:19,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:19,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:17:19,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:17:19,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:19" (1/1) ... [2023-11-19 05:17:19,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d4fc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:19, skipping insertion in model container [2023-11-19 05:17:19,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:19" (1/1) ... [2023-11-19 05:17:19,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:17:19,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:19,709 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 05:17:19,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31b9cf9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:19, skipping insertion in model container [2023-11-19 05:17:19,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:19,711 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:17:19,713 INFO L158 Benchmark]: Toolchain (without parser) took 391.29ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 88.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:17:19,713 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:17:19,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.37ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 88.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:17:19,716 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.37ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 88.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 215]: 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_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/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_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/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_6e660cd5-19bd-4b26-89b4-c38e3d779036/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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:17:22,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:17:22,460 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 05:17:22,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:17:22,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:17:22,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:17:22,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:17:22,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:17:22,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:17:22,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:17:22,529 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:17:22,530 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:17:22,530 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:17:22,532 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:17:22,533 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:17:22,533 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:17:22,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:17:22,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:17:22,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:17:22,537 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:17:22,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:17:22,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:17:22,539 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:17:22,539 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:17:22,540 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:17:22,540 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:17:22,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:17:22,541 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:17:22,542 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:17:22,542 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:17:22,544 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:17:22,544 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:17:22,545 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:17:22,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:17:22,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:17:22,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:17:22,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:17:22,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:17:22,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:17:22,548 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:17:22,548 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:17:22,549 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:17:22,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:17:22,549 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_6e660cd5-19bd-4b26-89b4-c38e3d779036/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2023-11-19 05:17:23,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:17:23,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:17:23,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:17:23,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:17:23,063 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:17:23,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-19 05:17:26,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:17:26,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:17:26,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2023-11-19 05:17:26,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data/5462ce3ca/7573722b0cd54801abc4c2d6a6311e7d/FLAG3322d2e3c [2023-11-19 05:17:26,647 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/data/5462ce3ca/7573722b0cd54801abc4c2d6a6311e7d [2023-11-19 05:17:26,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:17:26,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:17:26,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:26,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:17:26,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:17:26,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:26" (1/1) ... [2023-11-19 05:17:26,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318e5277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:26, skipping insertion in model container [2023-11-19 05:17:26,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:26" (1/1) ... [2023-11-19 05:17:26,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:17:26,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:26,974 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:17:26,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:17:27,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:27,025 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:17:27,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:27,088 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:27,088 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:17:27,097 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:17:27,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27 WrapperNode [2023-11-19 05:17:27,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:27,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:17:27,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:17:27,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:17:27,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,230 INFO L138 Inliner]: procedures = 28, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 469 [2023-11-19 05:17:27,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:17:27,232 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:17:27,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:17:27,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:17:27,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:17:27,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:17:27,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:17:27,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:17:27,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (1/1) ... [2023-11-19 05:17:27,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:17:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:27,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:17:27,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e660cd5-19bd-4b26-89b4-c38e3d779036/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:17:27,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:17:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:17:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:17:27,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:17:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 05:17:27,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 05:17:27,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 05:17:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 05:17:27,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 05:17:27,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 05:17:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 05:17:27,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 05:17:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:17:27,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:17:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:17:27,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:17:27,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:17:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:17:27,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:17:27,452 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:17:27,613 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:17:27,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:17:29,050 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:17:29,538 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:17:29,539 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-19 05:17:29,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:17:29 BoogieIcfgContainer [2023-11-19 05:17:29,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:17:29,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:17:29,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:17:29,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:17:29,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:17:26" (1/3) ... [2023-11-19 05:17:29,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f12d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:17:29, skipping insertion in model container [2023-11-19 05:17:29,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:27" (2/3) ... [2023-11-19 05:17:29,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f12d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:17:29, skipping insertion in model container [2023-11-19 05:17:29,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:17:29" (3/3) ... [2023-11-19 05:17:29,564 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2023-11-19 05:17:29,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:17:29,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-11-19 05:17:29,589 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:17:29,784 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 05:17:29,826 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:17:29,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 415 transitions, 858 flow [2023-11-19 05:17:29,845 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 415 transitions, 858 flow [2023-11-19 05:17:29,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 415 transitions, 858 flow [2023-11-19 05:17:30,036 INFO L124 PetriNetUnfolderBase]: 37/411 cut-off events. [2023-11-19 05:17:30,036 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 05:17:30,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 411 events. 37/411 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 480 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 348. Up to 8 conditions per place. [2023-11-19 05:17:30,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 10736