./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/twostage_3-2.i --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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/twostage_3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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 9e65812efd79e833978ab1548160841e061a451f72b6ff490ed9b7c0a593a91c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:59:06,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:59:06,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:59:06,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:59:06,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:59:06,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:59:06,364 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:59:06,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:59:06,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:59:06,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:59:06,368 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:59:06,369 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:59:06,369 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:59:06,374 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:59:06,375 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:59:06,375 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:59:06,376 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:59:06,376 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:59:06,377 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:59:06,377 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:59:06,378 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:59:06,378 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:59:06,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:59:06,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:59:06,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:59:06,380 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:59:06,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:59:06,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:59:06,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:59:06,382 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:59:06,383 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:59:06,384 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:59:06,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:59:06,384 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:59:06,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:59:06,385 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:59:06,385 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:59:06,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:59:06,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:59:06,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:06,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:59:06,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:59:06,386 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:59:06,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:59:06,387 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:59:06,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:59:06,388 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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e65812efd79e833978ab1548160841e061a451f72b6ff490ed9b7c0a593a91c [2023-11-06 20:59:06,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:59:06,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:59:06,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:59:06,700 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:59:06,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:59:06,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread/twostage_3-2.i [2023-11-06 20:59:09,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:59:10,428 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:59:10,428 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/sv-benchmarks/c/pthread/twostage_3-2.i [2023-11-06 20:59:10,448 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data/16cfcb21c/e8a9cf2b8d8940b19f0430b8e9b59e06/FLAG78e17a3a5 [2023-11-06 20:59:10,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data/16cfcb21c/e8a9cf2b8d8940b19f0430b8e9b59e06 [2023-11-06 20:59:10,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:59:10,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:59:10,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:10,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:59:10,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:59:10,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:10" (1/1) ... [2023-11-06 20:59:10,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b882947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:10, skipping insertion in model container [2023-11-06 20:59:10,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:10" (1/1) ... [2023-11-06 20:59:10,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:11,294 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:11,296 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:11,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:11,310 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 20:59:11,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4467fde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:11, skipping insertion in model container [2023-11-06 20:59:11,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:11,311 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:59:11,313 INFO L158 Benchmark]: Toolchain (without parser) took 845.29ms. Allocated memory is still 130.0MB. Free memory was 96.6MB in the beginning and 79.5MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 20:59:11,314 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:59:11,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 840.99ms. Allocated memory is still 130.0MB. Free memory was 96.2MB in the beginning and 79.5MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 20:59:11,316 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 840.99ms. Allocated memory is still 130.0MB. Free memory was 96.2MB in the beginning and 79.5MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1284]: 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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/twostage_3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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 9e65812efd79e833978ab1548160841e061a451f72b6ff490ed9b7c0a593a91c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:59:13,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:59:13,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:59:13,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:59:13,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:59:13,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:59:13,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:59:13,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:59:13,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:59:13,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:59:13,989 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:59:13,990 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:59:13,990 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:59:13,992 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:59:13,992 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:59:13,993 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:59:13,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:59:13,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:59:13,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:59:13,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:59:13,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:59:13,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:59:13,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:59:13,997 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:59:13,998 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:59:13,998 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:59:13,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:59:13,999 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:59:13,999 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:59:14,000 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:59:14,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:59:14,002 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:59:14,002 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:59:14,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:59:14,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:59:14,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:59:14,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:14,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:59:14,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:59:14,005 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:59:14,005 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:59:14,006 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:59:14,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:59:14,006 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_4d11a5ee-0990-492d-894c-ff5abc10eb8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e65812efd79e833978ab1548160841e061a451f72b6ff490ed9b7c0a593a91c [2023-11-06 20:59:14,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:59:14,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:59:14,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:59:14,471 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:59:14,472 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:59:14,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread/twostage_3-2.i [2023-11-06 20:59:17,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:59:18,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:59:18,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/sv-benchmarks/c/pthread/twostage_3-2.i [2023-11-06 20:59:18,225 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data/c2225834e/8430a8b33b7a40488f95671b44ebe15a/FLAG158649e34 [2023-11-06 20:59:18,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/data/c2225834e/8430a8b33b7a40488f95671b44ebe15a [2023-11-06 20:59:18,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:59:18,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:59:18,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:18,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:59:18,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:59:18,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:18" (1/1) ... [2023-11-06 20:59:18,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44975686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:18, skipping insertion in model container [2023-11-06 20:59:18,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:18" (1/1) ... [2023-11-06 20:59:18,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:19,101 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:19,103 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:19,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:19,125 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:59:19,142 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:19,229 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:19,242 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:19,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:19,250 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:59:19,343 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:19,345 WARN L1577 CHandler]: Possible shadowing of function lock [2023-11-06 20:59:19,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:19,475 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:59:19,483 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:59:19,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19 WrapperNode [2023-11-06 20:59:19,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:19,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:19,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:59:19,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:59:19,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,585 INFO L138 Inliner]: procedures = 378, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 196 [2023-11-06 20:59:19,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:19,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:59:19,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:59:19,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:59:19,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,654 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:59:19,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:59:19,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:59:19,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:59:19,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (1/1) ... [2023-11-06 20:59:19,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:19,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:59:19,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d11a5ee-0990-492d-894c-ff5abc10eb8f/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:59:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:59:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2023-11-06 20:59:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2023-11-06 20:59:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2023-11-06 20:59:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2023-11-06 20:59:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-11-06 20:59:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:59:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:59:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:59:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:59:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:59:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-06 20:59:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 20:59:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:59:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:59:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:59:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:59:19,774 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 20:59:20,046 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:59:20,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:59:20,710 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:59:20,721 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:59:20,722 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 20:59:20,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:20 BoogieIcfgContainer [2023-11-06 20:59:20,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:59:20,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:59:20,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:59:20,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:59:20,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:59:18" (1/3) ... [2023-11-06 20:59:20,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f414324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:20, skipping insertion in model container [2023-11-06 20:59:20,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:19" (2/3) ... [2023-11-06 20:59:20,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f414324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:20, skipping insertion in model container [2023-11-06 20:59:20,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:20" (3/3) ... [2023-11-06 20:59:20,733 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3-2.i [2023-11-06 20:59:20,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:59:20,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 20:59:20,754 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:59:20,854 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 20:59:20,895 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:59:20,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 250 transitions, 520 flow [2023-11-06 20:59:20,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 250 transitions, 520 flow [2023-11-06 20:59:20,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 520 flow [2023-11-06 20:59:21,156 INFO L124 PetriNetUnfolderBase]: 41/503 cut-off events. [2023-11-06 20:59:21,156 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 20:59:21,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 503 events. 41/503 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2205 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 275. Up to 8 conditions per place. [2023-11-06 20:59:21,179 INFO L119 LiptonReduction]: Number of co-enabled transitions 8236