./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:40,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:40,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:14:40,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:40,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:40,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:40,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:40,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:40,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:40,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:40,496 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:40,497 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:40,498 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:40,499 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:14:40,500 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:40,500 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:40,501 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:14:40,502 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:14:40,503 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:40,503 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:14:40,504 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:14:40,505 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:14:40,506 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:14:40,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:14:40,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:40,508 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:40,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:40,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:40,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:40,510 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:14:40,511 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:14:40,511 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:14:40,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:40,512 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:14:40,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:14:40,513 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:40,513 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:40,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:40,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:40,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:40,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:40,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:40,515 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:14:40,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:14:40,516 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:40,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:40,516 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_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee [2023-11-19 04:14:40,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:40,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:40,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:40,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:40,903 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:40,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i [2023-11-19 04:14:44,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:44,926 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:44,926 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i [2023-11-19 04:14:44,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data/4114f1137/81c42611f3cb480b8b35b7d4565618d1/FLAGfd05257ad [2023-11-19 04:14:44,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data/4114f1137/81c42611f3cb480b8b35b7d4565618d1 [2023-11-19 04:14:44,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:44,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:44,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:44,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:44,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:45,000 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:44" (1/1) ... [2023-11-19 04:14:45,002 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115451f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:45, skipping insertion in model container [2023-11-19 04:14:45,002 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:44" (1/1) ... [2023-11-19 04:14:45,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:45,367 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:14:45,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:45,822 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) [2023-11-19 04:14:45,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40cc9bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:45, skipping insertion in model container [2023-11-19 04:14:45,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:45,830 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:14:45,832 INFO L158 Benchmark]: Toolchain (without parser) took 845.27ms. Allocated memory is still 178.3MB. Free memory was 145.8MB in the beginning and 123.4MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 04:14:45,833 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:14:45,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 839.82ms. Allocated memory is still 178.3MB. Free memory was 145.0MB in the beginning and 123.4MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:14:45,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 839.82ms. Allocated memory is still 178.3MB. Free memory was 145.0MB in the beginning and 123.4MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: 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_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:14:48,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:14:49,135 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:14:49,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:14:49,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:14:49,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:14:49,232 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:14:49,233 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:14:49,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:14:49,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:14:49,242 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:14:49,243 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:14:49,243 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:14:49,245 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:14:49,246 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:14:49,247 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:14:49,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:14:49,248 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:14:49,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:14:49,251 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:14:49,251 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:14:49,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:14:49,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:14:49,253 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:14:49,254 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:14:49,254 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:14:49,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:14:49,255 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:14:49,256 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:14:49,256 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:14:49,258 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:14:49,259 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:14:49,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:14:49,260 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:14:49,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:14:49,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:14:49,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:49,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:14:49,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:14:49,263 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:14:49,263 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:14:49,263 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:14:49,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:14:49,264 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_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee [2023-11-19 04:14:49,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:14:49,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:14:49,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:14:49,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:14:49,843 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:14:49,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i [2023-11-19 04:14:53,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:14:53,998 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:14:53,999 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test4-3.i [2023-11-19 04:14:54,033 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data/bd2e57d85/c637ea8f9209439e89998f9db1d37148/FLAG84ddd6cbf [2023-11-19 04:14:54,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/data/bd2e57d85/c637ea8f9209439e89998f9db1d37148 [2023-11-19 04:14:54,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:14:54,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:14:54,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:54,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:14:54,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:14:54,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:54" (1/1) ... [2023-11-19 04:14:54,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19dbcf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:54, skipping insertion in model container [2023-11-19 04:14:54,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:14:54" (1/1) ... [2023-11-19 04:14:54,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:54,565 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:14:55,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:55,197 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:14:55,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:14:55,250 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:14:55,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:55,449 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:14:55,479 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:14:55,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:14:55,683 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:14:55,693 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:14:55,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55 WrapperNode [2023-11-19 04:14:55,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:14:55,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:55,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:14:55,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:14:55,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:55,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:55,905 INFO L138 Inliner]: procedures = 181, calls = 440, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1449 [2023-11-19 04:14:55,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:14:55,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:14:55,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:14:55,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:14:55,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:55,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:55,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:55,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:56,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:56,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:56,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:56,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:56,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:14:56,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:14:56,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:14:56,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:14:56,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (1/1) ... [2023-11-19 04:14:56,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:14:56,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:14:56,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:14:56,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:14:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:14:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:14:56,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:14:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:14:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:14:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:14:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:14:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:14:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:14:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:14:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:14:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:14:56,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:14:56,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:14:56,585 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:14:56,587 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:14:56,593 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 04:15:04,981 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:15:05,013 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:15:05,013 INFO L302 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-19 04:15:05,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:05 BoogieIcfgContainer [2023-11-19 04:15:05,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:15:05,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:15:05,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:15:05,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:15:05,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:14:54" (1/3) ... [2023-11-19 04:15:05,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c1c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:05, skipping insertion in model container [2023-11-19 04:15:05,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:14:55" (2/3) ... [2023-11-19 04:15:05,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437c1c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:15:05, skipping insertion in model container [2023-11-19 04:15:05,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:15:05" (3/3) ... [2023-11-19 04:15:05,044 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test4-3.i [2023-11-19 04:15:05,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:15:05,065 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-19 04:15:05,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:15:05,168 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fabe1d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:15:05,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-19 04:15:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 1643 states, 790 states have (on average 2.267088607594937) internal successors, (1791), 1635 states have internal predecessors, (1791), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:15:05,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:15:05,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:05,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:15:05,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr850ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:05,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1205042, now seen corresponding path program 1 times [2023-11-19 04:15:05,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:05,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961554412] [2023-11-19 04:15:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:05,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:05,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:05,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:15:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:05,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:05,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:05,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:05,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961554412] [2023-11-19 04:15:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961554412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:05,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:05,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:05,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885126136] [2023-11-19 04:15:05,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:05,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:05,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:05,531 INFO L87 Difference]: Start difference. First operand has 1643 states, 790 states have (on average 2.267088607594937) internal successors, (1791), 1635 states have internal predecessors, (1791), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:09,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:09,912 INFO L93 Difference]: Finished difference Result 2004 states and 2099 transitions. [2023-11-19 04:15:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:09,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:15:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:09,949 INFO L225 Difference]: With dead ends: 2004 [2023-11-19 04:15:09,949 INFO L226 Difference]: Without dead ends: 2000 [2023-11-19 04:15:09,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:09,955 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 399 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:09,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2542 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-19 04:15:09,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-11-19 04:15:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1641. [2023-11-19 04:15:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 799 states have (on average 2.146433041301627) internal successors, (1715), 1633 states have internal predecessors, (1715), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:15:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1727 transitions. [2023-11-19 04:15:10,088 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1727 transitions. Word has length 4 [2023-11-19 04:15:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:10,089 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 1727 transitions. [2023-11-19 04:15:10,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1727 transitions. [2023-11-19 04:15:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:15:10,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:10,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:15:10,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 04:15:10,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:10,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:10,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:10,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825422, now seen corresponding path program 1 times [2023-11-19 04:15:10,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:10,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183185399] [2023-11-19 04:15:10,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:10,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:10,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:10,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:10,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:15:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:10,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:10,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:10,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 04:15:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:10,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:10,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183185399] [2023-11-19 04:15:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183185399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:10,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:10,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073859183] [2023-11-19 04:15:10,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:10,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:10,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:10,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:10,595 INFO L87 Difference]: Start difference. First operand 1641 states and 1727 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:14,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:14,170 INFO L93 Difference]: Finished difference Result 1685 states and 1782 transitions. [2023-11-19 04:15:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:14,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:15:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:14,181 INFO L225 Difference]: With dead ends: 1685 [2023-11-19 04:15:14,181 INFO L226 Difference]: Without dead ends: 1685 [2023-11-19 04:15:14,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:14,183 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1150 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:14,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1269 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 04:15:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-11-19 04:15:14,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1628. [2023-11-19 04:15:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 879 states have (on average 2.0011376564277588) internal successors, (1759), 1620 states have internal predecessors, (1759), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:15:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 1771 transitions. [2023-11-19 04:15:14,235 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 1771 transitions. Word has length 6 [2023-11-19 04:15:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:14,235 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 1771 transitions. [2023-11-19 04:15:14,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 1771 transitions. [2023-11-19 04:15:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:15:14,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:14,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:15:14,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:14,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:14,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:14,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825423, now seen corresponding path program 1 times [2023-11-19 04:15:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:14,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658109581] [2023-11-19 04:15:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:14,441 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:14,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:14,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:14,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:15:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:14,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:15:14,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:14,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 04:15:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:14,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:14,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658109581] [2023-11-19 04:15:14,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658109581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:14,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:14,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:15:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530848348] [2023-11-19 04:15:14,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:14,739 INFO L87 Difference]: Start difference. First operand 1628 states and 1771 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:20,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:20,253 INFO L93 Difference]: Finished difference Result 1938 states and 2101 transitions. [2023-11-19 04:15:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:15:20,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:20,266 INFO L225 Difference]: With dead ends: 1938 [2023-11-19 04:15:20,267 INFO L226 Difference]: Without dead ends: 1938 [2023-11-19 04:15:20,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:20,269 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 512 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:20,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2017 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-19 04:15:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2023-11-19 04:15:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1788. [2023-11-19 04:15:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1049 states have (on average 1.9723546234509057) internal successors, (2069), 1780 states have internal predecessors, (2069), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 04:15:20,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2081 transitions. [2023-11-19 04:15:20,328 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2081 transitions. Word has length 6 [2023-11-19 04:15:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:20,329 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2081 transitions. [2023-11-19 04:15:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2081 transitions. [2023-11-19 04:15:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:15:20,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:20,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:20,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:20,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:20,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:20,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1472540985, now seen corresponding path program 1 times [2023-11-19 04:15:20,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698848746] [2023-11-19 04:15:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:20,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:20,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:20,537 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:20,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 04:15:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:20,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:15:20,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:20,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:20,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:20,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698848746] [2023-11-19 04:15:20,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698848746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:20,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:20,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:15:20,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691419804] [2023-11-19 04:15:20,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:20,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:15:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:20,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:15:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:15:20,811 INFO L87 Difference]: Start difference. First operand 1788 states and 2081 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:22,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:22,292 INFO L93 Difference]: Finished difference Result 3031 states and 3524 transitions. [2023-11-19 04:15:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:15:22,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:15:22,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:22,313 INFO L225 Difference]: With dead ends: 3031 [2023-11-19 04:15:22,314 INFO L226 Difference]: Without dead ends: 3031 [2023-11-19 04:15:22,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:22,318 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1186 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 4448 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:22,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 4448 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 04:15:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2023-11-19 04:15:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2342. [2023-11-19 04:15:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 1603 states have (on average 1.9413599500935745) internal successors, (3112), 2331 states have internal predecessors, (3112), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:15:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3130 transitions. [2023-11-19 04:15:22,459 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3130 transitions. Word has length 7 [2023-11-19 04:15:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:22,459 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 3130 transitions. [2023-11-19 04:15:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3130 transitions. [2023-11-19 04:15:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:15:22,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:22,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:22,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-19 04:15:22,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:22,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr647REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:22,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:22,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2067682115, now seen corresponding path program 1 times [2023-11-19 04:15:22,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:22,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612576492] [2023-11-19 04:15:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:22,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:22,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:22,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:22,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 04:15:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:22,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:22,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:22,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:22,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:22,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612576492] [2023-11-19 04:15:22,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612576492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:22,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:22,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250929559] [2023-11-19 04:15:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:22,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:22,995 INFO L87 Difference]: Start difference. First operand 2342 states and 3130 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:23,428 INFO L93 Difference]: Finished difference Result 2627 states and 3267 transitions. [2023-11-19 04:15:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:23,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 04:15:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:23,453 INFO L225 Difference]: With dead ends: 2627 [2023-11-19 04:15:23,453 INFO L226 Difference]: Without dead ends: 2627 [2023-11-19 04:15:23,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:23,466 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 597 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:23,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 3116 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:15:23,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2023-11-19 04:15:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2204. [2023-11-19 04:15:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1465 states have (on average 1.9488054607508531) internal successors, (2855), 2193 states have internal predecessors, (2855), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:15:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2873 transitions. [2023-11-19 04:15:23,550 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2873 transitions. Word has length 9 [2023-11-19 04:15:23,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:23,551 INFO L495 AbstractCegarLoop]: Abstraction has 2204 states and 2873 transitions. [2023-11-19 04:15:23,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2873 transitions. [2023-11-19 04:15:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:15:23,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:23,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:23,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:23,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:23,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr649REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:23,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -95505278, now seen corresponding path program 1 times [2023-11-19 04:15:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813351850] [2023-11-19 04:15:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:23,758 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:23,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:23,759 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:23,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 04:15:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:23,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:15:23,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:24,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:24,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813351850] [2023-11-19 04:15:24,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813351850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:24,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:24,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:15:24,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208809822] [2023-11-19 04:15:24,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:24,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:15:24,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:24,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:15:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:15:24,096 INFO L87 Difference]: Start difference. First operand 2204 states and 2873 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:26,110 INFO L93 Difference]: Finished difference Result 2627 states and 3266 transitions. [2023-11-19 04:15:26,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:15:26,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 04:15:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:26,130 INFO L225 Difference]: With dead ends: 2627 [2023-11-19 04:15:26,131 INFO L226 Difference]: Without dead ends: 2621 [2023-11-19 04:15:26,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:26,132 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 603 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:26,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 4555 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 04:15:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2023-11-19 04:15:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2198. [2023-11-19 04:15:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 1459 states have (on average 1.952021932830706) internal successors, (2848), 2187 states have internal predecessors, (2848), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:15:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 2866 transitions. [2023-11-19 04:15:26,214 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 2866 transitions. Word has length 12 [2023-11-19 04:15:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:26,214 INFO L495 AbstractCegarLoop]: Abstraction has 2198 states and 2866 transitions. [2023-11-19 04:15:26,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 2866 transitions. [2023-11-19 04:15:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:15:26,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:26,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:26,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:26,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:26,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:26,420 INFO L85 PathProgramCache]: Analyzing trace with hash 759655000, now seen corresponding path program 1 times [2023-11-19 04:15:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:26,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672380396] [2023-11-19 04:15:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:26,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:26,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:26,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 04:15:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:26,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:15:26,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:26,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:26,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672380396] [2023-11-19 04:15:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672380396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:26,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41722800] [2023-11-19 04:15:26,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:26,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:15:26,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:26,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:15:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:26,720 INFO L87 Difference]: Start difference. First operand 2198 states and 2866 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:26,790 INFO L93 Difference]: Finished difference Result 2138 states and 2780 transitions. [2023-11-19 04:15:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:15:26,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 04:15:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:26,807 INFO L225 Difference]: With dead ends: 2138 [2023-11-19 04:15:26,807 INFO L226 Difference]: Without dead ends: 2138 [2023-11-19 04:15:26,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:15:26,809 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 81 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:26,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 3002 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:15:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2023-11-19 04:15:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2138. [2023-11-19 04:15:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1423 states have (on average 1.9409697821503864) internal successors, (2762), 2127 states have internal predecessors, (2762), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:15:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 2780 transitions. [2023-11-19 04:15:26,882 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 2780 transitions. Word has length 12 [2023-11-19 04:15:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:26,882 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 2780 transitions. [2023-11-19 04:15:26,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 2780 transitions. [2023-11-19 04:15:26,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 04:15:26,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:26,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:26,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:27,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:27,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash -115989326, now seen corresponding path program 1 times [2023-11-19 04:15:27,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:27,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138203482] [2023-11-19 04:15:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:27,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:27,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:27,092 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:27,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 04:15:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:27,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:15:27,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:27,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:27,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138203482] [2023-11-19 04:15:27,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138203482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:27,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:15:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235834190] [2023-11-19 04:15:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:27,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:15:27,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:27,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:15:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:15:27,428 INFO L87 Difference]: Start difference. First operand 2138 states and 2780 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:15:27,567 INFO L93 Difference]: Finished difference Result 2110 states and 2724 transitions. [2023-11-19 04:15:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:15:27,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 04:15:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:15:27,583 INFO L225 Difference]: With dead ends: 2110 [2023-11-19 04:15:27,584 INFO L226 Difference]: Without dead ends: 2110 [2023-11-19 04:15:27,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:15:27,585 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 62 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 4442 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:15:27,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 4442 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:15:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2023-11-19 04:15:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2108. [2023-11-19 04:15:27,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1407 states have (on average 1.9218194740582801) internal successors, (2704), 2097 states have internal predecessors, (2704), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 04:15:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2722 transitions. [2023-11-19 04:15:27,646 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2722 transitions. Word has length 14 [2023-11-19 04:15:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:15:27,647 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 2722 transitions. [2023-11-19 04:15:27,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:15:27,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2722 transitions. [2023-11-19 04:15:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:15:27,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:15:27,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:15:27,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:15:27,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:27,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 04:15:27,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:15:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 662304, now seen corresponding path program 1 times [2023-11-19 04:15:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:15:27,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932509883] [2023-11-19 04:15:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:15:27,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:15:27,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:15:27,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:15:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a80ba4d2-10fe-4387-adec-0e948a4d6fa4/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 04:15:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:15:28,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:15:28,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:15:28,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 04:15:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:15:28,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:15:28,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:15:28,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932509883] [2023-11-19 04:15:28,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932509883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:15:28,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:15:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:15:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417769962] [2023-11-19 04:15:28,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:15:28,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:15:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:15:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:15:28,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:15:28,269 INFO L87 Difference]: Start difference. First operand 2108 states and 2722 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)