./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:04:29,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:04:29,628 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:04:29,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:04:29,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:04:29,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:04:29,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:04:29,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:04:29,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:04:29,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:04:29,686 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:04:29,687 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:04:29,687 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:04:29,689 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:04:29,689 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:04:29,690 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:04:29,690 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:04:29,691 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:04:29,691 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:04:29,692 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:04:29,692 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:04:29,692 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:04:29,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:04:29,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:04:29,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:04:29,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:04:29,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:04:29,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:04:29,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:04:29,696 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:04:29,697 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:04:29,698 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:04:29,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:04:29,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:04:29,698 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:04:29,699 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:04:29,699 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:04:29,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:04:29,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:04:29,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:04:29,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:04:29,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:04:29,700 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:04:29,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:04:29,701 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:04:29,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:04:29,701 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_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2023-11-06 21:04:30,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:04:30,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:04:30,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:04:30,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:04:30,054 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:04:30,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-06 21:04:33,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:04:33,366 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:04:33,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-06 21:04:33,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data/0349e499a/b00efdd38490437599a15441eeae90ab/FLAG75553118c [2023-11-06 21:04:33,391 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data/0349e499a/b00efdd38490437599a15441eeae90ab [2023-11-06 21:04:33,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:04:33,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:04:33,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:33,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:04:33,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:04:33,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:33" (1/1) ... [2023-11-06 21:04:33,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7601e76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:33, skipping insertion in model container [2023-11-06 21:04:33,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:33" (1/1) ... [2023-11-06 21:04:33,448 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:04:33,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:33,698 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 21:04:33,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4be7d3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:33, skipping insertion in model container [2023-11-06 21:04:33,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:33,700 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:04:33,702 INFO L158 Benchmark]: Toolchain (without parser) took 305.62ms. Allocated memory is still 151.0MB. Free memory was 106.6MB in the beginning and 115.6MB in the end (delta: -9.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:04:33,702 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:04:33,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.32ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 115.6MB in the end (delta: -9.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:04:33,705 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.32ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 115.6MB in the end (delta: -9.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: 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_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:04:36,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:04:36,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 21:04:36,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:04:36,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:04:36,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:04:36,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:04:36,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:04:36,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:04:36,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:04:36,361 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:04:36,361 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:04:36,362 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:04:36,363 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:04:36,364 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:04:36,364 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:04:36,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:04:36,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:04:36,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:04:36,367 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:04:36,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:04:36,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:04:36,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:04:36,369 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:04:36,370 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:04:36,370 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:04:36,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:04:36,371 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:04:36,371 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:04:36,372 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:04:36,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:04:36,374 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:04:36,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:04:36,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:04:36,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:04:36,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:04:36,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:04:36,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:04:36,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:04:36,377 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:04:36,377 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:04:36,378 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:04:36,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:04:36,378 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_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2023-11-06 21:04:36,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:04:36,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:04:36,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:04:36,802 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:04:36,802 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:04:36,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-06 21:04:39,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:04:40,173 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:04:40,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2023-11-06 21:04:40,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data/df4691cda/a49ba103b6bf497588cabe5213db8b0d/FLAGb7cac314c [2023-11-06 21:04:40,469 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/data/df4691cda/a49ba103b6bf497588cabe5213db8b0d [2023-11-06 21:04:40,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:04:40,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:04:40,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:40,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:04:40,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:04:40,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5ec694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40, skipping insertion in model container [2023-11-06 21:04:40,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,520 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:04:40,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:40,810 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:04:40,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:04:40,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:40,867 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:04:40,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:04:40,938 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:04:40,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40 WrapperNode [2023-11-06 21:04:40,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:04:40,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:04:40,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:04:40,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:04:40,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:40,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,014 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 115 [2023-11-06 21:04:41,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:04:41,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:04:41,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:04:41,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:04:41,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:04:41,086 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:04:41,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:04:41,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:04:41,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (1/1) ... [2023-11-06 21:04:41,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:04:41,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:04:41,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:04:41,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d4a3d8f-cbbd-454a-a00e-3c3dbc9605de/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:04:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:04:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:04:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:04:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:04:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:04:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:04:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:04:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:04:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:04:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:04:41,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:04:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:04:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:04:41,184 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:04:41,331 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:04:41,332 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:04:41,873 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:04:41,883 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:04:41,886 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:04:41,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:04:41 BoogieIcfgContainer [2023-11-06 21:04:41,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:04:41,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:04:41,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:04:41,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:04:41,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:04:40" (1/3) ... [2023-11-06 21:04:41,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45324eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:04:41, skipping insertion in model container [2023-11-06 21:04:41,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:04:40" (2/3) ... [2023-11-06 21:04:41,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45324eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:04:41, skipping insertion in model container [2023-11-06 21:04:41,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:04:41" (3/3) ... [2023-11-06 21:04:41,903 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2023-11-06 21:04:41,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:04:41,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-06 21:04:41,924 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:04:42,075 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:04:42,125 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:04:42,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 199 transitions, 412 flow [2023-11-06 21:04:42,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 199 transitions, 412 flow [2023-11-06 21:04:42,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 199 transitions, 412 flow [2023-11-06 21:04:42,295 INFO L124 PetriNetUnfolderBase]: 15/197 cut-off events. [2023-11-06 21:04:42,295 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:04:42,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 197 events. 15/197 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 232 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-11-06 21:04:42,306 INFO L119 LiptonReduction]: Number of co-enabled transitions 1720