./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.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_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/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_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/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_173dab60-5a54-4761-83f4-8bb7208e0144/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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:59:00,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:59:01,102 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:59:01,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:59:01,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:59:01,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:59:01,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:59:01,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:59:01,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:59:01,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:59:01,173 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:59:01,173 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:59:01,174 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:59:01,175 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:59:01,176 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:59:01,176 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:59:01,177 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:59:01,177 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:59:01,178 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:59:01,178 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:59:01,179 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:59:01,179 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:59:01,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:59:01,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:59:01,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:59:01,182 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:59:01,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:59:01,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:59:01,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:59:01,183 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:59:01,193 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:59:01,193 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:59:01,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:59:01,194 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:59:01,194 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:59:01,194 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:59:01,194 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:59:01,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:59:01,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:59:01,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:01,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:59:01,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:59:01,196 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:59:01,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:59:01,197 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:59:01,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:59:01,197 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_173dab60-5a54-4761-83f4-8bb7208e0144/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2023-11-06 20:59:01,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:59:01,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:59:01,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:59:01,568 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:59:01,569 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:59:01,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 20:59:04,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:59:04,955 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:59:04,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 20:59:04,967 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data/ba4a4c554/ec096d7c1cb44c31baed83e01c355238/FLAG107c422f4 [2023-11-06 20:59:04,983 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data/ba4a4c554/ec096d7c1cb44c31baed83e01c355238 [2023-11-06 20:59:04,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:59:04,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:59:04,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:04,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:59:04,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:59:05,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:04" (1/1) ... [2023-11-06 20:59:05,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0aaea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:05, skipping insertion in model container [2023-11-06 20:59:05,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:04" (1/1) ... [2023-11-06 20:59:05,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:05,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:05,278 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 20:59:05,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@76970707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:05, skipping insertion in model container [2023-11-06 20:59:05,279 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:05,279 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:59:05,281 INFO L158 Benchmark]: Toolchain (without parser) took 289.69ms. Allocated memory is still 161.5MB. Free memory was 130.8MB in the beginning and 119.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,282 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 101.7MB in the beginning and 101.6MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:59:05,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.51ms. Allocated memory is still 161.5MB. Free memory was 130.8MB in the beginning and 119.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 20:59:05,284 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 101.7MB in the beginning and 101.6MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.51ms. Allocated memory is still 161.5MB. Free memory was 130.8MB in the beginning and 119.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 159]: 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_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/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_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/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_173dab60-5a54-4761-83f4-8bb7208e0144/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 c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:59:07,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:59:07,780 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:59:07,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:59:07,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:59:07,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:59:07,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:59:07,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:59:07,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:59:07,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:59:07,839 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:59:07,840 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:59:07,840 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:59:07,842 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:59:07,842 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:59:07,843 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:59:07,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:59:07,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:59:07,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:59:07,846 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:59:07,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:59:07,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:59:07,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:59:07,848 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:59:07,849 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:59:07,849 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:59:07,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:59:07,850 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:59:07,850 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:59:07,851 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:59:07,852 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:59:07,853 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:59:07,853 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:59:07,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:59:07,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:59:07,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:59:07,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:07,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:59:07,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:59:07,856 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:59:07,856 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:59:07,857 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:59:07,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:59:07,857 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_173dab60-5a54-4761-83f4-8bb7208e0144/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2150e0b957073117139b89f4d79d7a8523050efb20e53a1bf0b405c120dd6a7 [2023-11-06 20:59:08,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:59:08,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:59:08,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:59:08,255 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:59:08,256 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:59:08,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 20:59:11,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:59:11,761 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:59:11,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 20:59:11,772 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data/3b39abb29/3129956d6c0c4fc4942111525fc0d71d/FLAGba3a17044 [2023-11-06 20:59:11,793 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/data/3b39abb29/3129956d6c0c4fc4942111525fc0d71d [2023-11-06 20:59:11,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:59:11,801 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:59:11,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:11,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:59:11,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:59:11,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:11" (1/1) ... [2023-11-06 20:59:11,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dba4bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:11, skipping insertion in model container [2023-11-06 20:59:11,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:59:11" (1/1) ... [2023-11-06 20:59:11,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:12,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:12,161 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:59:12,172 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:59:12,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:12,226 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:59:12,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:59:12,305 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:59:12,305 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:59:12,315 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:59:12,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12 WrapperNode [2023-11-06 20:59:12,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:59:12,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:12,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:59:12,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:59:12,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,407 INFO L138 Inliner]: procedures = 28, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 316 [2023-11-06 20:59:12,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:59:12,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:59:12,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:59:12,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:59:12,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:59:12,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:59:12,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:59:12,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:59:12,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (1/1) ... [2023-11-06 20:59:12,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:59:12,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:59:12,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:59:12,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_173dab60-5a54-4761-83f4-8bb7208e0144/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:59:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:59:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:59:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:59:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:59:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 20:59:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 20:59:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 20:59:12,588 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 20:59:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 20:59:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 20:59:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 20:59:12,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 20:59:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:59:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:59:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:59:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:59:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:59:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:59:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:59:12,594 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:59:12,740 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:59:12,742 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:59:13,640 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:59:13,903 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:59:13,904 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 20:59:13,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:13 BoogieIcfgContainer [2023-11-06 20:59:13,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:59:13,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:59:13,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:59:13,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:59:13,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:59:11" (1/3) ... [2023-11-06 20:59:13,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f232c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:13, skipping insertion in model container [2023-11-06 20:59:13,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:59:12" (2/3) ... [2023-11-06 20:59:13,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f232c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:59:13, skipping insertion in model container [2023-11-06 20:59:13,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:59:13" (3/3) ... [2023-11-06 20:59:13,917 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-11-06 20:59:13,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:59:13,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 20:59:13,938 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:59:14,097 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 20:59:14,147 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:59:14,162 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 278 transitions, 584 flow [2023-11-06 20:59:14,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 278 transitions, 584 flow [2023-11-06 20:59:14,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 278 transitions, 584 flow [2023-11-06 20:59:14,317 INFO L124 PetriNetUnfolderBase]: 19/274 cut-off events. [2023-11-06 20:59:14,317 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 20:59:14,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 274 events. 19/274 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 214 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 219. Up to 2 conditions per place. [2023-11-06 20:59:14,343 INFO L119 LiptonReduction]: Number of co-enabled transitions 3160