./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:57:58,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:57:58,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 04:57:58,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:57:58,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:57:58,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:57:58,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:57:58,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:57:58,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:57:58,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:57:58,231 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:57:58,232 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:57:58,233 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:57:58,234 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:57:58,235 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:57:58,235 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:57:58,236 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:57:58,237 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:57:58,238 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:57:58,238 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:57:58,239 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:57:58,240 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:57:58,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:57:58,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:57:58,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:57:58,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:57:58,244 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:57:58,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:57:58,246 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:57:58,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:57:58,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:57:58,248 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:57:58,249 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:57:58,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:57:58,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:57:58,251 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:57:58,252 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:57:58,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:57:58,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:57:58,254 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:57:58,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:57:58,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:57:58,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:58,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:57:58,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:57:58,261 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:57:58,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:57:58,261 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:57:58,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:57:58,262 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_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 [2023-11-19 04:57:58,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:57:58,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:57:58,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:57:58,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:57:58,632 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:57:58,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i [2023-11-19 04:58:02,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:58:02,910 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:58:02,916 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i [2023-11-19 04:58:02,950 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data/f3aee92ed/679e066f07c041198d17e9fee9e1b393/FLAG96b185bf3 [2023-11-19 04:58:02,975 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data/f3aee92ed/679e066f07c041198d17e9fee9e1b393 [2023-11-19 04:58:02,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:58:02,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:58:02,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:02,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:58:02,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:58:02,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:02" (1/1) ... [2023-11-19 04:58:02,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551bd830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:02, skipping insertion in model container [2023-11-19 04:58:02,999 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:02" (1/1) ... [2023-11-19 04:58:03,096 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:03,462 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:58:03,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:04,005 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 04:58:04,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62616af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:04, skipping insertion in model container [2023-11-19 04:58:04,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:04,007 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:58:04,010 INFO L158 Benchmark]: Toolchain (without parser) took 1020.32ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 100.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:58:04,011 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 157.3MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:58:04,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1017.17ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 100.8MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:58:04,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 157.3MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1017.17ms. Allocated memory is still 157.3MB. Free memory was 121.1MB in the beginning and 100.8MB in the end (delta: 20.3MB). 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:58:07,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:58:07,333 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 04:58:07,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:58:07,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:58:07,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:58:07,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:58:07,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:58:07,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:58:07,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:58:07,445 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:58:07,446 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:58:07,446 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:58:07,448 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:58:07,449 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:58:07,449 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:58:07,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:58:07,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:58:07,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:58:07,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:58:07,454 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:58:07,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:58:07,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:58:07,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:58:07,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:58:07,457 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:58:07,457 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:58:07,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:58:07,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:58:07,459 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:58:07,461 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:58:07,461 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:58:07,461 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:58:07,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:58:07,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:58:07,462 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:58:07,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:58:07,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:58:07,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:58:07,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:07,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:58:07,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:58:07,466 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:58:07,466 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:58:07,467 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:58:07,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:58:07,467 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_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67d7a8078c463999fbe6676df51bd105d1b2c9209543e9e47ea1846fac277ca0 [2023-11-19 04:58:08,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:58:08,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:58:08,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:58:08,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:58:08,064 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:58:08,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i [2023-11-19 04:58:11,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:58:12,438 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:58:12,446 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test4-1.i [2023-11-19 04:58:12,484 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data/fa0f911d5/e508e91db7e74719a0c39d50871d2226/FLAG07402fdff [2023-11-19 04:58:12,507 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/data/fa0f911d5/e508e91db7e74719a0c39d50871d2226 [2023-11-19 04:58:12,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:58:12,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:58:12,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:12,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:58:12,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:58:12,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:12" (1/1) ... [2023-11-19 04:58:12,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d707d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:12, skipping insertion in model container [2023-11-19 04:58:12,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:12" (1/1) ... [2023-11-19 04:58:12,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:13,077 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:58:13,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:13,511 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:58:13,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:13,542 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:58:13,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:13,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:58:13,664 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:58:13,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:13,878 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:58:13,887 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:58:13,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13 WrapperNode [2023-11-19 04:58:13,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:13,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:13,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:58:13,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:58:13,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:13,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,034 INFO L138 Inliner]: procedures = 181, calls = 341, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1123 [2023-11-19 04:58:14,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:14,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:58:14,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:58:14,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:58:14,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:58:14,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:58:14,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:58:14,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:58:14,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (1/1) ... [2023-11-19 04:58:14,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:14,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:14,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:58:14,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:58:14,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:58:14,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:58:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:58:14,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:58:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:58:14,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:58:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:58:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:58:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:58:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:58:14,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:58:14,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:58:14,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:58:14,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:58:14,612 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:58:14,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:58:28,938 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:58:28,952 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:58:28,952 INFO L302 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-19 04:58:28,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:28 BoogieIcfgContainer [2023-11-19 04:58:28,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:58:28,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:58:28,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:58:28,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:58:28,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:58:12" (1/3) ... [2023-11-19 04:58:28,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412734f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:28, skipping insertion in model container [2023-11-19 04:58:28,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:13" (2/3) ... [2023-11-19 04:58:28,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412734f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:28, skipping insertion in model container [2023-11-19 04:58:28,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:28" (3/3) ... [2023-11-19 04:58:28,971 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test4-1.i [2023-11-19 04:58:28,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:58:28,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:58:29,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:58:29,068 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;@6590410e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:58:29,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:58:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 187 states have (on average 1.6524064171122994) internal successors, (309), 189 states have internal predecessors, (309), 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 04:58:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:58:29,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:29,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:58:29,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:58:29,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1172639, now seen corresponding path program 1 times [2023-11-19 04:58:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:29,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729655659] [2023-11-19 04:58:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:29,129 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 04:58:29,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:29,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:29,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:29,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:58:29,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:29,463 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 04:58:29,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:29,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729655659] [2023-11-19 04:58:29,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729655659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:29,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:29,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:58:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838438038] [2023-11-19 04:58:29,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:29,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:29,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:29,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:29,533 INFO L87 Difference]: Start difference. First operand has 197 states, 187 states have (on average 1.6524064171122994) internal successors, (309), 189 states have internal predecessors, (309), 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 04:58:31,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:33,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:34,932 INFO L93 Difference]: Finished difference Result 209 states and 267 transitions. [2023-11-19 04:58:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:34,941 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 04:58:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:34,955 INFO L225 Difference]: With dead ends: 209 [2023-11-19 04:58:34,956 INFO L226 Difference]: Without dead ends: 205 [2023-11-19 04:58:34,957 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 04:58:34,962 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 17 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:34,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 482 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 04:58:34,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-19 04:58:35,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2023-11-19 04:58:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 193 states have (on average 1.2797927461139897) internal successors, (247), 194 states have internal predecessors, (247), 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 04:58:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 259 transitions. [2023-11-19 04:58:35,062 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 259 transitions. Word has length 4 [2023-11-19 04:58:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:35,062 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 259 transitions. [2023-11-19 04:58:35,063 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 04:58:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 259 transitions. [2023-11-19 04:58:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:58:35,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:35,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:35,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:35,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:35,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:58:35,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash 310602656, now seen corresponding path program 1 times [2023-11-19 04:58:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:35,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516919159] [2023-11-19 04:58:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:35,270 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 04:58:35,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:35,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:35,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:35,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:58:35,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:35,618 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 04:58:35,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:35,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:35,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516919159] [2023-11-19 04:58:35,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516919159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:35,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:35,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:58:35,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96880731] [2023-11-19 04:58:35,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:35,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:58:35,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:35,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:58:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:58:35,630 INFO L87 Difference]: Start difference. First operand 202 states and 259 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 04:58:38,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:41,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:42,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:45,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:58:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:46,773 INFO L93 Difference]: Finished difference Result 321 states and 413 transitions. [2023-11-19 04:58:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:58:46,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-11-19 04:58:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:46,779 INFO L225 Difference]: With dead ends: 321 [2023-11-19 04:58:46,780 INFO L226 Difference]: Without dead ends: 319 [2023-11-19 04:58:46,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:58:46,781 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 166 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:46,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 661 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 3 Unknown, 0 Unchecked, 11.1s Time] [2023-11-19 04:58:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-19 04:58:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-11-19 04:58:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 307 states have (on average 1.280130293159609) internal successors, (393), 308 states have internal predecessors, (393), 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 04:58:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 411 transitions. [2023-11-19 04:58:46,807 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 411 transitions. Word has length 11 [2023-11-19 04:58:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:46,808 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 411 transitions. [2023-11-19 04:58:46,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 04:58:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 411 transitions. [2023-11-19 04:58:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 04:58:46,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:46,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:46,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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)] Ended with exit code 0 [2023-11-19 04:58:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:47,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:58:47,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1638652318, now seen corresponding path program 1 times [2023-11-19 04:58:47,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:47,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595803922] [2023-11-19 04:58:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:47,023 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 04:58:47,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:47,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:47,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:47,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:58:47,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:58:47,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:47,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595803922] [2023-11-19 04:58:47,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595803922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:47,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:58:47,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715022248] [2023-11-19 04:58:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:47,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:58:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:58:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:58:47,867 INFO L87 Difference]: Start difference. First operand 319 states and 411 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:58:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:48,015 INFO L93 Difference]: Finished difference Result 327 states and 403 transitions. [2023-11-19 04:58:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:58:48,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2023-11-19 04:58:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:48,018 INFO L225 Difference]: With dead ends: 327 [2023-11-19 04:58:48,018 INFO L226 Difference]: Without dead ends: 327 [2023-11-19 04:58:48,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 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 04:58:48,020 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 43 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:48,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 628 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-19 04:58:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2023-11-19 04:58:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 313 states have (on average 1.2236421725239617) internal successors, (383), 314 states have internal predecessors, (383), 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 04:58:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 401 transitions. [2023-11-19 04:58:48,042 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 401 transitions. Word has length 129 [2023-11-19 04:58:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:48,042 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 401 transitions. [2023-11-19 04:58:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:58:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 401 transitions. [2023-11-19 04:58:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 04:58:48,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:48,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:48,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:48,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:48,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:58:48,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1782265456, now seen corresponding path program 1 times [2023-11-19 04:58:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:48,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055773536] [2023-11-19 04:58:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:48,260 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 04:58:48,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:48,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:48,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:48,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:58:48,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:58:49,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:49,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055773536] [2023-11-19 04:58:49,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055773536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:49,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:49,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:58:49,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094119205] [2023-11-19 04:58:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:49,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:58:49,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:58:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:58:49,112 INFO L87 Difference]: Start difference. First operand 325 states and 401 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:58:49,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:49,217 INFO L93 Difference]: Finished difference Result 313 states and 381 transitions. [2023-11-19 04:58:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:58:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2023-11-19 04:58:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:49,220 INFO L225 Difference]: With dead ends: 313 [2023-11-19 04:58:49,220 INFO L226 Difference]: Without dead ends: 313 [2023-11-19 04:58:49,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:58:49,222 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 6 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:49,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 835 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-19 04:58:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-11-19 04:58:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 301 states have (on average 1.2059800664451827) internal successors, (363), 302 states have internal predecessors, (363), 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 04:58:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 381 transitions. [2023-11-19 04:58:49,238 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 381 transitions. Word has length 129 [2023-11-19 04:58:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:49,239 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 381 transitions. [2023-11-19 04:58:49,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:58:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 381 transitions. [2023-11-19 04:58:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-19 04:58:49,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:49,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:49,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:49,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:49,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:58:49,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash 93349718, now seen corresponding path program 1 times [2023-11-19 04:58:49,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:49,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219452047] [2023-11-19 04:58:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:49,456 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 04:58:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:49,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:49,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:50,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:58:50,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:58:50,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:50,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:50,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219452047] [2023-11-19 04:58:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219452047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:50,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:50,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:58:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700142556] [2023-11-19 04:58:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:50,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:50,800 INFO L87 Difference]: Start difference. First operand 313 states and 381 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:58:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:51,642 INFO L93 Difference]: Finished difference Result 311 states and 378 transitions. [2023-11-19 04:58:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:51,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2023-11-19 04:58:51,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:51,652 INFO L225 Difference]: With dead ends: 311 [2023-11-19 04:58:51,652 INFO L226 Difference]: Without dead ends: 311 [2023-11-19 04:58:51,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 04:58:51,653 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 7 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:51,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 448 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 04:58:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-19 04:58:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-11-19 04:58:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 299 states have (on average 1.2040133779264215) internal successors, (360), 300 states have internal predecessors, (360), 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 04:58:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 378 transitions. [2023-11-19 04:58:51,670 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 378 transitions. Word has length 129 [2023-11-19 04:58:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:51,671 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 378 transitions. [2023-11-19 04:58:51,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 04:58:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 378 transitions. [2023-11-19 04:58:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-19 04:58:51,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:51,676 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:51,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:51,889 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:58:51,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash -166389882, now seen corresponding path program 1 times [2023-11-19 04:58:51,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:51,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967050648] [2023-11-19 04:58:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:51,891 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 04:58:51,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:51,893 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:51,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:52,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:58:52,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:58:53,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:53,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:53,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967050648] [2023-11-19 04:58:53,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967050648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:53,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:53,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:58:53,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975303900] [2023-11-19 04:58:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:53,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:58:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:53,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:58:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:58:53,037 INFO L87 Difference]: Start difference. First operand 311 states and 378 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:58:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:53,160 INFO L93 Difference]: Finished difference Result 314 states and 384 transitions. [2023-11-19 04:58:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:58:53,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 144 [2023-11-19 04:58:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:53,167 INFO L225 Difference]: With dead ends: 314 [2023-11-19 04:58:53,167 INFO L226 Difference]: Without dead ends: 314 [2023-11-19 04:58:53,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 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 04:58:53,170 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 2 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:53,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 680 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:53,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-11-19 04:58:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2023-11-19 04:58:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 301 states have (on average 1.2059800664451827) internal successors, (363), 303 states have internal predecessors, (363), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:58:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 384 transitions. [2023-11-19 04:58:53,197 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 384 transitions. Word has length 144 [2023-11-19 04:58:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:53,200 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 384 transitions. [2023-11-19 04:58:53,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:58:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 384 transitions. [2023-11-19 04:58:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-19 04:58:53,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:53,206 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:53,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:53,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:53,421 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:58:53,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1701915906, now seen corresponding path program 1 times [2023-11-19 04:58:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:53,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170998389] [2023-11-19 04:58:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:53,431 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 04:58:53,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:53,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:53,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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 04:58:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:54,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:58:54,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:58:54,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:58:54,837 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:54,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170998389] [2023-11-19 04:58:54,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170998389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:54,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [535882571] [2023-11-19 04:58:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:54,839 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:58:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:58:54,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:58:54,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-19 04:58:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:56,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:58:56,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:58:56,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [535882571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:56,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:58:56,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-19 04:58:56,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789072775] [2023-11-19 04:58:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:56,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:56,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:56,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:58:56,258 INFO L87 Difference]: Start difference. First operand 314 states and 384 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:58:56,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:56,421 INFO L93 Difference]: Finished difference Result 356 states and 426 transitions. [2023-11-19 04:58:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:56,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 148 [2023-11-19 04:58:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:56,434 INFO L225 Difference]: With dead ends: 356 [2023-11-19 04:58:56,438 INFO L226 Difference]: Without dead ends: 356 [2023-11-19 04:58:56,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:58:56,441 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 5 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:56,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 411 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:58:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-19 04:58:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2023-11-19 04:58:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 341 states have (on average 1.1818181818181819) internal successors, (403), 343 states have internal predecessors, (403), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 04:58:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 424 transitions. [2023-11-19 04:58:56,463 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 424 transitions. Word has length 148 [2023-11-19 04:58:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:56,466 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 424 transitions. [2023-11-19 04:58:56,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:58:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 424 transitions. [2023-11-19 04:58:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-19 04:58:56,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:56,469 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:58:56,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:56,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e97b89b-6936-4b59-a9ed-6e8d39888f13/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