./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-coreutils/instrumented_interval_tail_comb.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-coreutils/instrumented_interval_tail_comb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 60b3c577fa65970bc54a66f3c47d776002fb71c3b88171fe0d06c29869c37698 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:50:47,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:50:48,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:50:48,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:50:48,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:50:48,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:50:48,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:50:48,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:50:48,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:50:48,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:50:48,126 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:50:48,127 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:50:48,128 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:50:48,130 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:50:48,130 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:50:48,131 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:50:48,131 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:50:48,132 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:50:48,133 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:50:48,133 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:50:48,134 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:50:48,134 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:50:48,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:50:48,136 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:50:48,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:50:48,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:50:48,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:50:48,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:50:48,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:50:48,139 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:50:48,141 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:50:48,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:50:48,141 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:50:48,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:50:48,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:50:48,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:50:48,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:50:48,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:50:48,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:50:48,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:50:48,144 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:50:48,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:50:48,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:50:48,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:50:48,145 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:50:48,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:50:48,146 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_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b3c577fa65970bc54a66f3c47d776002fb71c3b88171fe0d06c29869c37698 [2023-11-24 23:50:48,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:50:48,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:50:48,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:50:48,542 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:50:48,542 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:50:48,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/goblint-coreutils/instrumented_interval_tail_comb.i [2023-11-24 23:50:52,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:50:54,695 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:50:54,696 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/sv-benchmarks/c/goblint-coreutils/instrumented_interval_tail_comb.i [2023-11-24 23:50:54,927 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data/88a4c2ee7/f151a2edec184bd38d45db11acca7d9c/FLAGc66cddf3a [2023-11-24 23:50:54,947 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data/88a4c2ee7/f151a2edec184bd38d45db11acca7d9c [2023-11-24 23:50:54,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:50:54,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:50:54,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:50:54,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:50:54,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:50:54,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:54" (1/1) ... [2023-11-24 23:50:54,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10950b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:50:54, skipping insertion in model container [2023-11-24 23:50:54,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:50:54" (1/1) ... [2023-11-24 23:50:55,804 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:28,561 WARN L638 FunctionHandler]: implicit declaration of function __builtin___memcpy_chk [2023-11-24 23:51:28,563 WARN L638 FunctionHandler]: implicit declaration of function __builtin___memmove_chk [2023-11-24 23:51:28,564 WARN L638 FunctionHandler]: implicit declaration of function __builtin___mempcpy_chk [2023-11-24 23:51:28,565 WARN L638 FunctionHandler]: implicit declaration of function __builtin___memset_chk [2023-11-24 23:51:28,567 WARN L638 FunctionHandler]: implicit declaration of function __builtin___strcpy_chk [2023-11-24 23:51:28,568 WARN L638 FunctionHandler]: implicit declaration of function __builtin___stpcpy_chk [2023-11-24 23:51:28,569 WARN L638 FunctionHandler]: implicit declaration of function __builtin___strncpy_chk [2023-11-24 23:51:28,572 WARN L638 FunctionHandler]: implicit declaration of function __builtin___strcat_chk [2023-11-24 23:51:28,574 WARN L638 FunctionHandler]: implicit declaration of function __builtin___strncat_chk [2023-11-24 23:51:28,655 WARN L638 FunctionHandler]: implicit declaration of function __builtin___vsnprintf_chk [2023-11-24 23:51:28,844 WARN L638 FunctionHandler]: implicit declaration of function __builtin_strspn [2023-11-24 23:51:29,595 WARN L638 FunctionHandler]: implicit declaration of function __builtin_strcspn [2023-11-24 23:51:30,102 ERROR L324 MainTranslator]: Unsupported Syntax: The second argument of the pthread_mutex_init is not a null pointer. This means that non-default attributes are used. We support only the default attributes. [2023-11-24 23:51:30,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b72deb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:30, skipping insertion in model container [2023-11-24 23:51:30,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:30,114 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:51:30,122 INFO L158 Benchmark]: Toolchain (without parser) took 35157.88ms. Allocated memory was 218.1MB in the beginning and 364.9MB in the end (delta: 146.8MB). Free memory was 112.0MB in the beginning and 218.4MB in the end (delta: -106.4MB). Peak memory consumption was 207.1MB. Max. memory is 16.1GB. [2023-11-24 23:51:30,123 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 148.9MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:51:30,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 35151.96ms. Allocated memory was 218.1MB in the beginning and 364.9MB in the end (delta: 146.8MB). Free memory was 112.0MB in the beginning and 218.4MB in the end (delta: -106.4MB). Peak memory consumption was 207.1MB. Max. memory is 16.1GB. [2023-11-24 23:51:30,125 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 148.9MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 35151.96ms. Allocated memory was 218.1MB in the beginning and 364.9MB in the end (delta: 146.8MB). Free memory was 112.0MB in the beginning and 218.4MB in the end (delta: -106.4MB). Peak memory consumption was 207.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 36411]: Unsupported Syntax The second argument of the pthread_mutex_init is not a null pointer. This means that non-default attributes are used. We support only the default attributes. 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_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-coreutils/instrumented_interval_tail_comb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 60b3c577fa65970bc54a66f3c47d776002fb71c3b88171fe0d06c29869c37698 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:32,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:33,077 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-24 23:51:33,083 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:33,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:33,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:33,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:33,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:33,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:33,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:33,125 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:33,126 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:33,126 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:33,132 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:33,132 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:33,133 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:33,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:33,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:51:33,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:33,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:51:33,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:33,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:51:33,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:51:33,137 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:51:33,138 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:51:33,138 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:51:33,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:51:33,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:51:33,139 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:33,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:33,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:51:33,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:33,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:33,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:33,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:33,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:33,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:51:33,142 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:51:33,142 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:51:33,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:33,142 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:51:33,143 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:33,143 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:33,143 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_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b3c577fa65970bc54a66f3c47d776002fb71c3b88171fe0d06c29869c37698 [2023-11-24 23:51:33,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:33,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:33,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:33,574 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:33,574 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:33,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/goblint-coreutils/instrumented_interval_tail_comb.i [2023-11-24 23:51:37,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:39,251 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:39,252 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/sv-benchmarks/c/goblint-coreutils/instrumented_interval_tail_comb.i [2023-11-24 23:51:39,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data/1bac8b795/6a72e08c4e854ebe837449c5a1fd8827/FLAG19963d2fe [2023-11-24 23:51:39,586 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af668b14-444d-4a0e-b337-d804ab72b08e/bin/utaipan-verify-SwPr7d2a91/data/1bac8b795/6a72e08c4e854ebe837449c5a1fd8827 [2023-11-24 23:51:39,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:39,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:39,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:39,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:39,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:39,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:39" (1/1) ... [2023-11-24 23:51:39,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24838809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:39, skipping insertion in model container [2023-11-24 23:51:39,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:39" (1/1) ... [2023-11-24 23:51:40,498 INFO L177 MainTranslator]: Built tables and reachable declarations