./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91 --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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:09:00,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:09:00,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-25 00:09:00,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:09:00,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:09:00,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:09:00,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:09:00,615 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:09:00,616 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:09:00,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:09:00,621 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:09:00,622 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:09:00,622 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:09:00,624 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:09:00,625 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:09:00,625 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:09:00,625 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:09:00,626 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:09:00,626 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:09:00,627 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:09:00,627 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:09:00,628 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:09:00,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:09:00,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:09:00,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:09:00,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:09:00,631 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:09:00,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:09:00,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:09:00,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:09:00,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:09:00,646 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:09:00,646 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:09:00,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:09:00,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:09:00,647 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:09:00,648 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:09:00,648 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:09:00,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:09:00,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:09:00,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:09:00,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:09:00,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:09:00,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:00,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:09:00,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:09:00,651 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:09:00,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:09:00,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:09:00,651 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:09:00,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:09:00,652 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_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2023-11-25 00:09:00,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:09:00,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:09:00,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:09:00,982 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:09:00,982 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:09:00,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-11-25 00:09:04,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:09:04,554 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:09:04,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-11-25 00:09:04,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data/99e49b08c/cddc03995b724829955480544aff54d9/FLAG21923ff75 [2023-11-25 00:09:04,597 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data/99e49b08c/cddc03995b724829955480544aff54d9 [2023-11-25 00:09:04,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:09:04,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:09:04,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:04,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:09:04,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:09:04,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:04" (1/1) ... [2023-11-25 00:09:04,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a951435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:04, skipping insertion in model container [2023-11-25 00:09:04,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:04" (1/1) ... [2023-11-25 00:09:04,679 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:09:05,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:05,236 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) [2023-11-25 00:09:05,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e921287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:05, skipping insertion in model container [2023-11-25 00:09:05,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:05,238 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-25 00:09:05,240 INFO L158 Benchmark]: Toolchain (without parser) took 636.91ms. Allocated memory is still 132.1MB. Free memory was 97.7MB in the beginning and 78.2MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-25 00:09:05,240 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 132.1MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:09:05,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.24ms. Allocated memory is still 132.1MB. Free memory was 97.7MB in the beginning and 78.2MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-25 00:09:05,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 132.1MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.24ms. Allocated memory is still 132.1MB. Free memory was 97.7MB in the beginning and 78.2MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 739]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91 --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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:09:07,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:09:07,959 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-25 00:09:07,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:09:07,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:09:08,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:09:08,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:09:08,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:09:08,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:09:08,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:09:08,027 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:09:08,027 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:09:08,028 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:09:08,029 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:09:08,030 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:09:08,030 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:09:08,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:09:08,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:09:08,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:09:08,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:09:08,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:09:08,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:09:08,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:09:08,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:09:08,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:09:08,036 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:09:08,036 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:09:08,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:09:08,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:09:08,037 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:09:08,039 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:09:08,039 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:09:08,039 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:09:08,040 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:09:08,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:09:08,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:09:08,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:09:08,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:09:08,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:09:08,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:09:08,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:08,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:09:08,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:09:08,043 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:09:08,044 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:09:08,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:09:08,044 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:09:08,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:09:08,044 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_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2023-11-25 00:09:08,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:09:08,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:09:08,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:09:08,490 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:09:08,491 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:09:08,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-11-25 00:09:11,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:09:12,049 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:09:12,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-1.i [2023-11-25 00:09:12,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data/ff7f58961/acaca24f6a4a410194ca25aef52ce5ea/FLAG172457ec1 [2023-11-25 00:09:12,099 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/data/ff7f58961/acaca24f6a4a410194ca25aef52ce5ea [2023-11-25 00:09:12,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:09:12,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:09:12,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:12,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:09:12,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:09:12,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:12" (1/1) ... [2023-11-25 00:09:12,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9476e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:12, skipping insertion in model container [2023-11-25 00:09:12,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:12" (1/1) ... [2023-11-25 00:09:12,198 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:09:12,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:12,993 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-25 00:09:13,031 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:09:13,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:13,130 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:09:13,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:13,259 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:13,267 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:09:13,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13 WrapperNode [2023-11-25 00:09:13,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:13,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:09:13,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:09:13,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:09:13,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,371 INFO L138 Inliner]: procedures = 180, calls = 282, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1016 [2023-11-25 00:09:13,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:09:13,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:09:13,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:09:13,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:09:13,393 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:09:13,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:09:13,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:09:13,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:09:13,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (1/1) ... [2023-11-25 00:09:13,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:13,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:09:13,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:09:13,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:09:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-25 00:09:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-25 00:09:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:09:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:09:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:09:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:09:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:09:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:09:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:09:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:09:13,886 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:09:13,888 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:09:21,662 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:09:21,723 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:09:21,723 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-25 00:09:21,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:21 BoogieIcfgContainer [2023-11-25 00:09:21,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:09:21,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:09:21,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:09:21,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:09:21,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:09:12" (1/3) ... [2023-11-25 00:09:21,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4f1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:21, skipping insertion in model container [2023-11-25 00:09:21,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:13" (2/3) ... [2023-11-25 00:09:21,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4f1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:21, skipping insertion in model container [2023-11-25 00:09:21,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:21" (3/3) ... [2023-11-25 00:09:21,735 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test3-1.i [2023-11-25 00:09:21,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:09:21,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:09:21,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:09:21,844 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;@5f2a27db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:09:21,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:09:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 188 states have (on average 1.675531914893617) internal successors, (315), 191 states have internal predecessors, (315), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-25 00:09:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-25 00:09:21,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:21,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-25 00:09:21,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:21,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 820925, now seen corresponding path program 1 times [2023-11-25 00:09:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970763262] [2023-11-25 00:09:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:21,915 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 [2023-11-25 00:09:21,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:21,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:21,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:22,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:09:22,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:22,212 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_21| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_21|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_21| (_ bv0 1))))) is different from true [2023-11-25 00:09:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:22,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:22,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:22,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970763262] [2023-11-25 00:09:22,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970763262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:22,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:22,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:09:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031154627] [2023-11-25 00:09:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:22,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:22,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-25 00:09:22,271 INFO L87 Difference]: Start difference. First operand has 198 states, 188 states have (on average 1.675531914893617) internal successors, (315), 191 states have internal predecessors, (315), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-25 00:09:24,574 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 [] [2023-11-25 00:09:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:25,703 INFO L93 Difference]: Finished difference Result 292 states and 383 transitions. [2023-11-25 00:09:25,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:25,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-25 00:09:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:25,718 INFO L225 Difference]: With dead ends: 292 [2023-11-25 00:09:25,718 INFO L226 Difference]: Without dead ends: 290 [2023-11-25 00:09:25,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-25 00:09:25,727 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 120 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:25,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 474 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 1 Unknown, 384 Unchecked, 3.4s Time] [2023-11-25 00:09:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-25 00:09:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 196. [2023-11-25 00:09:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 187 states have (on average 1.2994652406417113) internal successors, (243), 189 states have internal predecessors, (243), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-25 00:09:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 253 transitions. [2023-11-25 00:09:25,807 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 253 transitions. Word has length 3 [2023-11-25 00:09:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:25,808 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 253 transitions. [2023-11-25 00:09:25,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-25 00:09:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 253 transitions. [2023-11-25 00:09:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-25 00:09:25,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:25,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:25,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:26,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:26,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:26,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1036606834, now seen corresponding path program 1 times [2023-11-25 00:09:26,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:26,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326270876] [2023-11-25 00:09:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:26,015 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 [2023-11-25 00:09:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:26,017 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:26,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:26,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:09:26,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:26,469 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_22| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_22|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_22| (_ bv0 1))))) is different from true [2023-11-25 00:09:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:26,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:26,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:26,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326270876] [2023-11-25 00:09:26,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326270876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:26,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:09:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436556630] [2023-11-25 00:09:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:26,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-25 00:09:26,483 INFO L87 Difference]: Start difference. First operand 196 states and 253 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2023-11-25 00:09:28,825 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 [] [2023-11-25 00:09:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:29,457 INFO L93 Difference]: Finished difference Result 291 states and 380 transitions. [2023-11-25 00:09:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2023-11-25 00:09:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:29,461 INFO L225 Difference]: With dead ends: 291 [2023-11-25 00:09:29,461 INFO L226 Difference]: Without dead ends: 289 [2023-11-25 00:09:29,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-25 00:09:29,463 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 112 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:29,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 474 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 1 Unknown, 379 Unchecked, 2.9s Time] [2023-11-25 00:09:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-25 00:09:29,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 265. [2023-11-25 00:09:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 254 states have (on average 1.3070866141732282) internal successors, (332), 256 states have internal predecessors, (332), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-25 00:09:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 346 transitions. [2023-11-25 00:09:29,502 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 346 transitions. Word has length 11 [2023-11-25 00:09:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:29,503 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 346 transitions. [2023-11-25 00:09:29,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2023-11-25 00:09:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 346 transitions. [2023-11-25 00:09:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-25 00:09:29,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:29,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:29,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:29,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:29,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:29,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:29,711 INFO L85 PathProgramCache]: Analyzing trace with hash 825176355, now seen corresponding path program 1 times [2023-11-25 00:09:29,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:29,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416836244] [2023-11-25 00:09:29,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:29,712 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 [2023-11-25 00:09:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:29,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:29,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:29,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:09:29,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:30,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:30,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:30,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416836244] [2023-11-25 00:09:30,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416836244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:30,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:30,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:09:30,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067991797] [2023-11-25 00:09:30,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:30,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:30,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:30,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:30,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:09:30,047 INFO L87 Difference]: Start difference. First operand 265 states and 346 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:32,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:36,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:36,525 INFO L93 Difference]: Finished difference Result 358 states and 464 transitions. [2023-11-25 00:09:36,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:09:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-25 00:09:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:36,530 INFO L225 Difference]: With dead ends: 358 [2023-11-25 00:09:36,531 INFO L226 Difference]: Without dead ends: 356 [2023-11-25 00:09:36,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:36,532 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 152 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:36,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 663 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2023-11-25 00:09:36,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-25 00:09:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2023-11-25 00:09:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 341 states have (on average 1.3049853372434017) internal successors, (445), 344 states have internal predecessors, (445), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-25 00:09:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 459 transitions. [2023-11-25 00:09:36,553 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 459 transitions. Word has length 14 [2023-11-25 00:09:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:36,553 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 459 transitions. [2023-11-25 00:09:36,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 459 transitions. [2023-11-25 00:09:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-25 00:09:36,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:36,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:36,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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)] Ended with exit code 0 [2023-11-25 00:09:36,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:36,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:36,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash -662988973, now seen corresponding path program 1 times [2023-11-25 00:09:36,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:36,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977862532] [2023-11-25 00:09:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:36,761 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 [2023-11-25 00:09:36,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:36,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:36,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:36,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:09:36,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:37,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:37,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:37,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977862532] [2023-11-25 00:09:37,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977862532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:37,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:37,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:09:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670871037] [2023-11-25 00:09:37,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:37,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:37,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:37,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:37,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:09:37,046 INFO L87 Difference]: Start difference. First operand 352 states and 459 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:37,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:37,216 INFO L93 Difference]: Finished difference Result 364 states and 447 transitions. [2023-11-25 00:09:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:37,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-25 00:09:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:37,220 INFO L225 Difference]: With dead ends: 364 [2023-11-25 00:09:37,220 INFO L226 Difference]: Without dead ends: 364 [2023-11-25 00:09:37,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:37,221 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 36 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:37,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 639 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:09:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-25 00:09:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2023-11-25 00:09:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 350 states have (on average 1.2285714285714286) internal successors, (430), 353 states have internal predecessors, (430), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-25 00:09:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 444 transitions. [2023-11-25 00:09:37,278 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 444 transitions. Word has length 50 [2023-11-25 00:09:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:37,279 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 444 transitions. [2023-11-25 00:09:37,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 444 transitions. [2023-11-25 00:09:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-25 00:09:37,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:37,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:37,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-25 00:09:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:37,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:37,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -247812281, now seen corresponding path program 1 times [2023-11-25 00:09:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466632605] [2023-11-25 00:09:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:37,495 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 [2023-11-25 00:09:37,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:37,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:37,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:37,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:09:37,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:37,782 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:09:37,783 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:09:37,784 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:09:37,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-25 00:09:37,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:09:37,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-25 00:09:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:37,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:37,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:37,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466632605] [2023-11-25 00:09:37,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466632605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:37,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:37,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:09:37,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832203376] [2023-11-25 00:09:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:37,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:09:37,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:09:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:37,962 INFO L87 Difference]: Start difference. First operand 361 states and 444 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:42,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:45,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:45,418 INFO L93 Difference]: Finished difference Result 315 states and 391 transitions. [2023-11-25 00:09:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:09:45,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-25 00:09:45,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:45,422 INFO L225 Difference]: With dead ends: 315 [2023-11-25 00:09:45,422 INFO L226 Difference]: Without dead ends: 312 [2023-11-25 00:09:45,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:09:45,423 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 52 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:45,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 823 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2023-11-25 00:09:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-25 00:09:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-11-25 00:09:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 302 states have (on average 1.2450331125827814) internal successors, (376), 305 states have internal predecessors, (376), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:09:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 388 transitions. [2023-11-25 00:09:45,434 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 388 transitions. Word has length 50 [2023-11-25 00:09:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:45,435 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 388 transitions. [2023-11-25 00:09:45,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 388 transitions. [2023-11-25 00:09:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-25 00:09:45,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:45,438 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] [2023-11-25 00:09:45,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:45,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:45,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:45,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1302577977, now seen corresponding path program 1 times [2023-11-25 00:09:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398300081] [2023-11-25 00:09:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:45,646 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 [2023-11-25 00:09:45,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:45,647 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:45,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:46,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:09:46,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:09:46,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:46,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:46,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398300081] [2023-11-25 00:09:46,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398300081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:46,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:46,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:09:46,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914777663] [2023-11-25 00:09:46,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:46,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:46,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:46,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:46,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:09:46,267 INFO L87 Difference]: Start difference. First operand 312 states and 388 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-25 00:09:46,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:46,428 INFO L93 Difference]: Finished difference Result 320 states and 380 transitions. [2023-11-25 00:09:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:46,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 80 [2023-11-25 00:09:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:46,432 INFO L225 Difference]: With dead ends: 320 [2023-11-25 00:09:46,433 INFO L226 Difference]: Without dead ends: 320 [2023-11-25 00:09:46,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:46,434 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 43 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:46,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 603 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:09:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-25 00:09:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 318. [2023-11-25 00:09:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 308 states have (on average 1.1883116883116882) internal successors, (366), 311 states have internal predecessors, (366), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:09:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 378 transitions. [2023-11-25 00:09:46,448 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 378 transitions. Word has length 80 [2023-11-25 00:09:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:46,449 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 378 transitions. [2023-11-25 00:09:46,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2023-11-25 00:09:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 378 transitions. [2023-11-25 00:09:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-25 00:09:46,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:46,451 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] [2023-11-25 00:09:46,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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)] Ended with exit code 0 [2023-11-25 00:09:46,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:46,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:46,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2135273559, now seen corresponding path program 1 times [2023-11-25 00:09:46,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:46,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891780742] [2023-11-25 00:09:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:46,664 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 [2023-11-25 00:09:46,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:46,666 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:46,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:47,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:09:47,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:09:47,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:47,483 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:47,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891780742] [2023-11-25 00:09:47,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891780742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:47,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:47,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:09:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35343961] [2023-11-25 00:09:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:47,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:09:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:09:47,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:47,486 INFO L87 Difference]: Start difference. First operand 318 states and 378 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2023-11-25 00:09:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:47,620 INFO L93 Difference]: Finished difference Result 306 states and 358 transitions. [2023-11-25 00:09:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:47,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 80 [2023-11-25 00:09:47,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:47,624 INFO L225 Difference]: With dead ends: 306 [2023-11-25 00:09:47,624 INFO L226 Difference]: Without dead ends: 306 [2023-11-25 00:09:47,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:47,625 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 6 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:47,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 802 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:09:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-25 00:09:47,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2023-11-25 00:09:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 296 states have (on average 1.1689189189189189) internal successors, (346), 299 states have internal predecessors, (346), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:09:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 358 transitions. [2023-11-25 00:09:47,636 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 358 transitions. Word has length 80 [2023-11-25 00:09:47,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:47,637 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 358 transitions. [2023-11-25 00:09:47,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2023-11-25 00:09:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 358 transitions. [2023-11-25 00:09:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-25 00:09:47,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:47,639 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] [2023-11-25 00:09:47,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:09:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:47,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:47,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -559489583, now seen corresponding path program 1 times [2023-11-25 00:09:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362573014] [2023-11-25 00:09:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:47,848 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 [2023-11-25 00:09:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:47,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:47,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-25 00:09:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:48,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:09:48,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:48,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:48,513 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:48,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362573014] [2023-11-25 00:09:48,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362573014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:48,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:48,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:09:48,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63318480] [2023-11-25 00:09:48,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:48,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:48,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:09:48,515 INFO L87 Difference]: Start difference. First operand 306 states and 358 transitions. Second operand has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:09:48,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:48,603 INFO L93 Difference]: Finished difference Result 308 states and 361 transitions. [2023-11-25 00:09:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2023-11-25 00:09:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:48,608 INFO L225 Difference]: With dead ends: 308 [2023-11-25 00:09:48,608 INFO L226 Difference]: Without dead ends: 308 [2023-11-25 00:09:48,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:48,610 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:48,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 662 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:09:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-25 00:09:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-11-25 00:09:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 297 states have (on average 1.1717171717171717) internal successors, (348), 301 states have internal predecessors, (348), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-25 00:09:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 361 transitions. [2023-11-25 00:09:48,623 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 361 transitions. Word has length 80 [2023-11-25 00:09:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:48,624 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 361 transitions. [2023-11-25 00:09:48,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:09:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 361 transitions. [2023-11-25 00:09:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-25 00:09:48,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:48,626 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-11-25 00:09:48,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-25 00:09:48,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:48,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:48,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:48,836 INFO L85 PathProgramCache]: Analyzing trace with hash 854059343, now seen corresponding path program 1 times [2023-11-25 00:09:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868499388] [2023-11-25 00:09:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:48,837 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 [2023-11-25 00:09:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:48,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:48,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-25 00:09:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:49,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:09:49,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:09:49,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:09:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:09:49,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:49,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868499388] [2023-11-25 00:09:49,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868499388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:09:49,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1897130023] [2023-11-25 00:09:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:49,693 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:09:49,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:09:49,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:09:49,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-25 00:09:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:50,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:09:50,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:09:50,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1897130023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:50,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:09:50,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-25 00:09:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246288155] [2023-11-25 00:09:50,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:50,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:09:50,775 INFO L87 Difference]: Start difference. First operand 308 states and 361 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2023-11-25 00:09:53,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:55,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:59,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:59,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:59,356 INFO L93 Difference]: Finished difference Result 406 states and 481 transitions. [2023-11-25 00:09:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:09:59,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 82 [2023-11-25 00:09:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:59,360 INFO L225 Difference]: With dead ends: 406 [2023-11-25 00:09:59,360 INFO L226 Difference]: Without dead ends: 406 [2023-11-25 00:09:59,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:09:59,361 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 430 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:59,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 379 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-11-25 00:09:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-25 00:09:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 397. [2023-11-25 00:09:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 385 states have (on average 1.1818181818181819) internal successors, (455), 390 states have internal predecessors, (455), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-25 00:09:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 470 transitions. [2023-11-25 00:09:59,375 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 470 transitions. Word has length 82 [2023-11-25 00:09:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:59,376 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 470 transitions. [2023-11-25 00:09:59,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2023-11-25 00:09:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 470 transitions. [2023-11-25 00:09:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-25 00:09:59,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:59,378 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-11-25 00:09:59,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-11-25 00:09:59,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-25 00:09:59,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-25 00:09:59,782 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:59,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:59,782 INFO L85 PathProgramCache]: Analyzing trace with hash -18531290, now seen corresponding path program 1 times [2023-11-25 00:09:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:59,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626795678] [2023-11-25 00:09:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:59,783 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 [2023-11-25 00:09:59,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:59,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-25 00:09:59,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/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 (12)] Waiting until timeout for monitored process [2023-11-25 00:10:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:00,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:00,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:10:00,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:00,553 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:00,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626795678] [2023-11-25 00:10:00,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626795678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:00,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [174194862] [2023-11-25 00:10:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:00,554 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:00,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:00,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:00,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-25 00:10:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:01,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:01,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:10:01,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:01,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [174194862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356654708] [2023-11-25 00:10:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:01,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:01,668 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:01,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_916b01c4-9bda-438f-a8f9-84bac6034c8a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-25 00:10:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:02,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:02,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:02,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:02,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356654708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:02,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:10:02,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-25 00:10:02,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198594253] [2023-11-25 00:10:02,435 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:10:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-25 00:10:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-25 00:10:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:10:02,439 INFO L87 Difference]: Start difference. First operand 397 states and 470 transitions. Second operand has 11 states, 8 states have (on average 11.375) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)