./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/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_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/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_c312893f-4645-431b-8d02-26f01f7d5e7b/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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:01:25,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:01:25,865 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 21:01:25,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:01:25,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:01:25,909 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:01:25,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:01:25,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:01:25,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:01:25,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:01:25,917 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:01:25,918 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:01:25,918 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:01:25,920 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 21:01:25,920 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:01:25,921 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:01:25,921 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 21:01:25,922 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 21:01:25,922 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:01:25,924 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 21:01:25,924 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 21:01:25,925 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 21:01:25,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:01:25,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:01:25,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:01:25,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:01:25,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:01:25,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:01:25,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:01:25,929 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:01:25,930 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:01:25,931 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:01:25,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:01:25,931 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:01:25,931 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:01:25,932 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:01:25,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:01:25,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:01:25,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:01:25,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:01:25,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:01:25,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:01:25,934 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 21:01:25,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:01:25,935 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:01:25,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:01:25,935 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_c312893f-4645-431b-8d02-26f01f7d5e7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2023-11-06 21:01:26,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:01:26,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:01:26,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:01:26,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:01:26,305 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:01:26,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 21:01:29,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:01:29,676 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:01:29,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 21:01:29,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data/f12f74b2d/239056eaa6eb43fd857dd0a3934ab780/FLAG328fec101 [2023-11-06 21:01:29,701 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data/f12f74b2d/239056eaa6eb43fd857dd0a3934ab780 [2023-11-06 21:01:29,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:01:29,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:01:29,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:01:29,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:01:29,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:01:29,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:01:29" (1/1) ... [2023-11-06 21:01:29,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ee4afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:29, skipping insertion in model container [2023-11-06 21:01:29,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:01:29" (1/1) ... [2023-11-06 21:01:29,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:01:29,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:01:29,933 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 21:01:29,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@505cf39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:29, skipping insertion in model container [2023-11-06 21:01:29,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:01:29,934 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:01:29,937 INFO L158 Benchmark]: Toolchain (without parser) took 230.37ms. Allocated memory is still 159.4MB. Free memory was 125.9MB in the beginning and 115.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:01:29,938 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:01:29,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.83ms. Allocated memory is still 159.4MB. Free memory was 125.3MB in the beginning and 115.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:01:29,941 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 66.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.83ms. Allocated memory is still 159.4MB. Free memory was 125.3MB in the beginning and 115.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 99]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/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_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/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_c312893f-4645-431b-8d02-26f01f7d5e7b/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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:01:32,285 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:01:32,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 21:01:32,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:01:32,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:01:32,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:01:32,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:01:32,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:01:32,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:01:32,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:01:32,497 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 21:01:32,498 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 21:01:32,498 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 21:01:32,500 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 21:01:32,501 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 21:01:32,501 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 21:01:32,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:01:32,502 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:01:32,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:01:32,504 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:01:32,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:01:32,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:01:32,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:01:32,506 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:01:32,506 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:01:32,507 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:01:32,507 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:01:32,508 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:01:32,508 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:01:32,509 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:01:32,510 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:01:32,510 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:01:32,511 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:01:32,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:01:32,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:01:32,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:01:32,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:01:32,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:01:32,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:01:32,514 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 21:01:32,514 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:01:32,515 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 21:01:32,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:01:32,515 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_c312893f-4645-431b-8d02-26f01f7d5e7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2023-11-06 21:01:32,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:01:32,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:01:32,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:01:32,978 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:01:32,978 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:01:32,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 21:01:36,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:01:36,519 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:01:36,520 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2023-11-06 21:01:36,528 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data/dea44b338/d45aa94c3ad543068cf3e83838af8e55/FLAGffd238270 [2023-11-06 21:01:36,543 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/data/dea44b338/d45aa94c3ad543068cf3e83838af8e55 [2023-11-06 21:01:36,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:01:36,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:01:36,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:01:36,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:01:36,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:01:36,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:36,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65809617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36, skipping insertion in model container [2023-11-06 21:01:36,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:36,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:01:36,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:01:36,826 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:01:36,831 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:01:36,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:01:36,855 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:01:36,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:01:36,900 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:01:36,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36 WrapperNode [2023-11-06 21:01:36,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:01:36,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:01:36,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:01:36,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:01:36,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:36,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,031 INFO L138 Inliner]: procedures = 27, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 104 [2023-11-06 21:01:37,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:01:37,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:01:37,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:01:37,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:01:37,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:01:37,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:01:37,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:01:37,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:01:37,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (1/1) ... [2023-11-06 21:01:37,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:01:37,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 21:01:37,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:01:37,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:01:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:01:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:01:37,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:01:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:01:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:01:37,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:01:37,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:01:37,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:01:37,214 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:01:37,215 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:01:37,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:01:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:01:37,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:01:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:01:37,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:01:37,219 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 21:01:37,388 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:01:37,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:01:37,907 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:01:37,917 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:01:37,917 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:01:37,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:01:37 BoogieIcfgContainer [2023-11-06 21:01:37,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:01:37,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:01:37,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:01:37,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:01:37,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:01:36" (1/3) ... [2023-11-06 21:01:37,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6209860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:01:37, skipping insertion in model container [2023-11-06 21:01:37,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:01:36" (2/3) ... [2023-11-06 21:01:37,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6209860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:01:37, skipping insertion in model container [2023-11-06 21:01:37,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:01:37" (3/3) ... [2023-11-06 21:01:37,929 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-11-06 21:01:37,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:01:37,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-06 21:01:37,949 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:01:38,145 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:01:38,206 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 21:01:38,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 187 transitions, 395 flow [2023-11-06 21:01:38,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 187 transitions, 395 flow [2023-11-06 21:01:38,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 395 flow [2023-11-06 21:01:38,351 INFO L124 PetriNetUnfolderBase]: 12/184 cut-off events. [2023-11-06 21:01:38,352 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:01:38,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 12/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-06 21:01:38,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 2970 [2023-11-06 21:02:02,297 INFO L134 LiptonReduction]: Checked pairs total: 3526 [2023-11-06 21:02:02,297 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-11-06 21:02:02,306 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 119 flow [2023-11-06 21:02:02,412 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:02:02,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:02:02,443 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d99f0c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 21:02:02,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 21:02:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:02:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-06 21:02:02,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:02:02,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-06 21:02:02,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-11-06 21:02:02,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:02:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash 22107, now seen corresponding path program 1 times [2023-11-06 21:02:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 21:02:02,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250288766] [2023-11-06 21:02:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:02:02,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:02:02,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 21:02:02,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 21:02:02,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c312893f-4645-431b-8d02-26f01f7d5e7b/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 21:02:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:02:02,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:02:02,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:02:02,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 21:02:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 21:02:02,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 21:02:02,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:02,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 21:02:02,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,803 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 21:02:02,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 21:02:02,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:02,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,840 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 21:02:02,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,852 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:02,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 21:02:02,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 21:02:02,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:02,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 21:02:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,954 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:02,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 21:02:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,970 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 21:02:02,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:02,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:03,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:03,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:03,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 21:02:03,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:03,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 21:02:03,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:02:03,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 21:02:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:02:03,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:02:03,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 21:02:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250288766] [2023-11-06 21:02:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250288766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:02:03,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:02:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:02:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444582246] [2023-11-06 21:02:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:02:03,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:02:03,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 21:02:03,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:02:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:02:03,091 INFO L87 Difference]: Start difference. First operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)