./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/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_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/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_f80ee61e-c888-4835-80b1-7ac507371c42/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 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:58:16,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:58:16,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:58:16,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:58:16,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:58:16,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:58:16,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:58:16,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:58:16,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:58:16,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:58:16,683 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:58:16,684 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:58:16,685 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:58:16,685 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:58:16,686 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:58:16,687 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:58:16,687 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:58:16,688 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:58:16,688 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:58:16,689 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:58:16,689 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:58:16,692 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:58:16,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:58:16,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:58:16,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:58:16,695 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:58:16,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:58:16,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:58:16,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:58:16,697 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:58:16,698 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:58:16,699 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:58:16,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:58:16,699 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:58:16,700 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:58:16,700 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:58:16,700 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:58:16,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:58:16,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:58:16,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:58:16,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:58:16,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:58:16,702 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:58:16,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:58:16,703 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:58:16,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:58:16,703 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_f80ee61e-c888-4835-80b1-7ac507371c42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 [2023-11-06 20:58:16,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:58:17,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:58:17,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:58:17,039 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:58:17,040 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:58:17,042 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-11-06 20:58:20,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:58:20,796 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:58:20,797 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-11-06 20:58:20,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data/a5a12b924/a07940860dad4b73a8d86e545cbcc906/FLAG54d56fd1f [2023-11-06 20:58:20,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data/a5a12b924/a07940860dad4b73a8d86e545cbcc906 [2023-11-06 20:58:20,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:58:20,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:58:20,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:58:20,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:58:20,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:58:20,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:20" (1/1) ... [2023-11-06 20:58:20,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3afd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:20, skipping insertion in model container [2023-11-06 20:58:20,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:20" (1/1) ... [2023-11-06 20:58:20,880 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:58:21,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:58:21,188 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 20:58:21,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46338c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:21, skipping insertion in model container [2023-11-06 20:58:21,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:58:21,194 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:58:21,198 INFO L158 Benchmark]: Toolchain (without parser) took 364.74ms. Allocated memory is still 136.3MB. Free memory was 91.1MB in the beginning and 80.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 20:58:21,199 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:58:21,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.53ms. Allocated memory is still 136.3MB. Free memory was 91.1MB in the beginning and 80.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 20:58:21,203 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 136.3MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.53ms. Allocated memory is still 136.3MB. Free memory was 91.1MB in the beginning and 80.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 163]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/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_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/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_f80ee61e-c888-4835-80b1-7ac507371c42/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 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:58:23,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:58:24,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:58:24,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:58:24,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:58:24,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:58:24,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:58:24,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:58:24,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:58:24,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:58:24,123 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:58:24,124 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:58:24,125 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:58:24,126 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:58:24,126 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:58:24,127 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:58:24,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:58:24,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:58:24,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:58:24,131 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:58:24,132 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:58:24,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:58:24,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:58:24,134 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:58:24,135 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:58:24,136 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:58:24,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:58:24,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:58:24,138 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:58:24,138 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:58:24,139 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:58:24,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:58:24,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:58:24,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:58:24,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:58:24,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:58:24,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:58:24,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:58:24,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:58:24,143 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:58:24,144 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:58:24,144 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:58:24,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:58:24,145 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_f80ee61e-c888-4835-80b1-7ac507371c42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 [2023-11-06 20:58:24,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:58:24,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:58:24,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:58:24,706 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:58:24,706 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:58:24,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-11-06 20:58:27,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:58:28,247 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:58:28,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-11-06 20:58:28,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data/e2106d253/bfa46f96387b4a9288b0a72c9a0696e4/FLAG19864e8be [2023-11-06 20:58:28,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/data/e2106d253/bfa46f96387b4a9288b0a72c9a0696e4 [2023-11-06 20:58:28,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:58:28,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:58:28,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:58:28,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:58:28,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:58:28,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:28,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d212662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28, skipping insertion in model container [2023-11-06 20:58:28,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:28,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:58:28,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:58:28,684 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:58:28,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:58:28,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:58:28,772 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:58:28,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:58:28,856 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:58:28,860 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:58:28,869 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:58:28,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28 WrapperNode [2023-11-06 20:58:28,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:58:28,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:58:28,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:58:28,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:58:28,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:28,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:28,990 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 320 [2023-11-06 20:58:28,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:58:28,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:58:28,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:58:28,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:58:29,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:58:29,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:58:29,058 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:58:29,058 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:58:29,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (1/1) ... [2023-11-06 20:58:29,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:58:29,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:58:29,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:58:29,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f80ee61e-c888-4835-80b1-7ac507371c42/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:58:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:58:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:58:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:58:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:58:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 20:58:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 20:58:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 20:58:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 20:58:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 20:58:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 20:58:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 20:58:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 20:58:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:58:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:58:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:58:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:58:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:58:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:58:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:58:29,152 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 20:58:29,308 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:58:29,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:58:30,388 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:58:30,686 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:58:30,686 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 20:58:30,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:30 BoogieIcfgContainer [2023-11-06 20:58:30,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:58:30,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:58:30,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:58:30,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:58:30,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:58:28" (1/3) ... [2023-11-06 20:58:30,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6e70ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:30, skipping insertion in model container [2023-11-06 20:58:30,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:58:28" (2/3) ... [2023-11-06 20:58:30,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6e70ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:58:30, skipping insertion in model container [2023-11-06 20:58:30,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:58:30" (3/3) ... [2023-11-06 20:58:30,705 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2023-11-06 20:58:30,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:58:30,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 20:58:30,725 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:58:30,887 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 20:58:30,939 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:58:30,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 280 transitions, 588 flow [2023-11-06 20:58:30,963 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 280 transitions, 588 flow [2023-11-06 20:58:30,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 280 transitions, 588 flow [2023-11-06 20:58:31,140 INFO L124 PetriNetUnfolderBase]: 19/276 cut-off events. [2023-11-06 20:58:31,141 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 20:58:31,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 276 events. 19/276 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 235 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 221. Up to 2 conditions per place. [2023-11-06 20:58:31,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 3392