./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:04,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:04,938 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-25 00:10:04,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:04,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:04,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:04,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:04,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:04,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:04,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:04,975 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:04,975 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:04,976 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:04,976 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:10:04,977 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:04,978 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:04,978 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:10:04,979 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:10:04,979 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:04,980 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:10:04,981 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:10:04,982 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:10:04,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:10:04,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:10:04,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:04,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:04,985 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:10:04,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:04,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:10:04,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:04,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:04,988 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:10:04,988 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:10:04,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:04,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:04,990 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:10:04,990 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:10:04,990 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:10:04,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:04,991 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:04,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:04,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:04,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:04,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:04,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:04,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:04,993 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:10:04,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:10:04,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:04,994 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:04,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:04,995 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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2023-11-25 00:10:05,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:05,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:05,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:05,339 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:05,339 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:05,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-25 00:10:08,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:08,944 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:08,945 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-25 00:10:08,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data/ecdf89b93/aa9af953ba114c7f91a06f5f1dcce982/FLAGff3f21021 [2023-11-25 00:10:08,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data/ecdf89b93/aa9af953ba114c7f91a06f5f1dcce982 [2023-11-25 00:10:08,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:08,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:09,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:09,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:09,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:09,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:08" (1/1) ... [2023-11-25 00:10:09,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34818e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:09, skipping insertion in model container [2023-11-25 00:10:09,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:08" (1/1) ... [2023-11-25 00:10:09,098 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:09,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:09,740 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 00:10:09,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43804c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:09, skipping insertion in model container [2023-11-25 00:10:09,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:09,742 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-25 00:10:09,744 INFO L158 Benchmark]: Toolchain (without parser) took 743.44ms. Allocated memory is still 190.8MB. Free memory was 148.8MB in the beginning and 131.0MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-25 00:10:09,745 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory was 69.0MB in the beginning and 69.0MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:10:09,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.72ms. Allocated memory is still 190.8MB. Free memory was 148.8MB in the beginning and 131.0MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-25 00:10:09,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 100.7MB. Free memory was 69.0MB in the beginning and 69.0MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.72ms. Allocated memory is still 190.8MB. Free memory was 148.8MB in the beginning and 131.0MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:12,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:12,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-25 00:10:12,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:12,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:12,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:12,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:12,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:12,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:12,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:12,769 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:12,770 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:12,770 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:12,772 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:12,773 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:12,773 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:12,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:10:12,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:10:12,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:12,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:12,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:10:12,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:12,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:10:12,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:12,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:12,780 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:10:12,781 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:10:12,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:12,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:12,782 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:10:12,784 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:10:12,784 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:10:12,784 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:10:12,785 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:10:12,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:12,785 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:12,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:12,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:10:12,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:12,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:12,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:12,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:12,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:12,789 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:10:12,789 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:12,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:12,790 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:12,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:12,790 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_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2023-11-25 00:10:13,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:13,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:13,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:13,336 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:13,336 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:13,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-25 00:10:16,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:17,374 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:17,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-25 00:10:17,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data/c94f029af/2941c2e24fbe411181c0063cdce3a291/FLAGae1cf00e2 [2023-11-25 00:10:17,429 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/data/c94f029af/2941c2e24fbe411181c0063cdce3a291 [2023-11-25 00:10:17,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:17,441 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:17,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:17,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:17,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:17,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:17" (1/1) ... [2023-11-25 00:10:17,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196f8086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:17, skipping insertion in model container [2023-11-25 00:10:17,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:17" (1/1) ... [2023-11-25 00:10:17,543 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:18,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:18,446 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-25 00:10:18,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:18,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:18,595 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:18,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:18,780 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:18,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18 WrapperNode [2023-11-25 00:10:18,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:18,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:18,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:18,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:18,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,894 INFO L138 Inliner]: procedures = 180, calls = 238, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 786 [2023-11-25 00:10:18,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:18,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:18,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:18,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:18,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,984 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:18,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:19,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:10:19,002 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:10:19,002 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:10:19,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:10:19,003 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (1/1) ... [2023-11-25 00:10:19,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:19,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:19,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:10:19,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:10:19,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-25 00:10:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-25 00:10:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:10:19,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:10:19,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:10:19,104 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:10:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:10:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:10:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:10:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:10:19,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:10:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:10:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-25 00:10:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:10:19,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:10:19,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:10:19,382 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:10:19,385 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:10:26,898 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:10:26,950 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:10:26,953 INFO L309 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-25 00:10:26,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:26 BoogieIcfgContainer [2023-11-25 00:10:26,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:10:26,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:10:26,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:10:26,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:10:26,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:17" (1/3) ... [2023-11-25 00:10:26,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c2e894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:26, skipping insertion in model container [2023-11-25 00:10:26,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:18" (2/3) ... [2023-11-25 00:10:26,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c2e894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:10:26, skipping insertion in model container [2023-11-25 00:10:26,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:10:26" (3/3) ... [2023-11-25 00:10:26,966 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2023-11-25 00:10:26,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:10:26,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:10:27,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:10:27,071 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;@5cb81f56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:10:27,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:10:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 140 states have (on average 1.6785714285714286) internal successors, (235), 152 states have internal predecessors, (235), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:10:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:10:27,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:27,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:27,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:27,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash -545432068, now seen corresponding path program 1 times [2023-11-25 00:10:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:27,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730217734] [2023-11-25 00:10:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:27,105 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 00:10:27,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:27,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:27,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:27,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:10:27,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:27,331 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 00:10:27,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:27,332 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:27,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730217734] [2023-11-25 00:10:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730217734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:27,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:10:27,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775983481] [2023-11-25 00:10:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:10:27,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:27,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:10:27,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:10:27,389 INFO L87 Difference]: Start difference. First operand has 158 states, 140 states have (on average 1.6785714285714286) internal successors, (235), 152 states have internal predecessors, (235), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 00:10:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:27,678 INFO L93 Difference]: Finished difference Result 246 states and 329 transitions. [2023-11-25 00:10:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:10:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 10 [2023-11-25 00:10:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:27,696 INFO L225 Difference]: With dead ends: 246 [2023-11-25 00:10:27,696 INFO L226 Difference]: Without dead ends: 245 [2023-11-25 00:10:27,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:10:27,701 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 108 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:27,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 411 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:10:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-25 00:10:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 157. [2023-11-25 00:10:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 140 states have (on average 1.3428571428571427) internal successors, (188), 151 states have internal predecessors, (188), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:10:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2023-11-25 00:10:27,758 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 10 [2023-11-25 00:10:27,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:27,758 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2023-11-25 00:10:27,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 00:10:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2023-11-25 00:10:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-25 00:10:27,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:27,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:27,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:27,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:27,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:27,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash 47747169, now seen corresponding path program 1 times [2023-11-25 00:10:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:27,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131745106] [2023-11-25 00:10:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:27,975 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 00:10:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:27,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:27,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:28,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:10:28,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:28,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:28,551 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:28,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2131745106] [2023-11-25 00:10:28,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2131745106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:28,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:28,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:10:28,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997134332] [2023-11-25 00:10:28,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:28,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:10:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:10:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:10:28,555 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 00:10:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:28,705 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions. [2023-11-25 00:10:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:10:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 65 [2023-11-25 00:10:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:28,708 INFO L225 Difference]: With dead ends: 161 [2023-11-25 00:10:28,708 INFO L226 Difference]: Without dead ends: 161 [2023-11-25 00:10:28,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 00:10:28,710 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 36 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:28,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 516 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:10:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-25 00:10:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2023-11-25 00:10:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.2797202797202798) internal successors, (183), 154 states have internal predecessors, (183), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:10:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 209 transitions. [2023-11-25 00:10:28,727 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 209 transitions. Word has length 65 [2023-11-25 00:10:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:28,727 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 209 transitions. [2023-11-25 00:10:28,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 00:10:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 209 transitions. [2023-11-25 00:10:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-25 00:10:28,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:28,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:28,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:28,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:28,952 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:28,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:28,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1993559723, now seen corresponding path program 1 times [2023-11-25 00:10:28,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:28,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158305131] [2023-11-25 00:10:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:28,955 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 00:10:28,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:28,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:28,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:29,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:10:29,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:29,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:29,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:29,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158305131] [2023-11-25 00:10:29,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158305131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:29,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:29,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:10:29,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111118542] [2023-11-25 00:10:29,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:29,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:10:29,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:10:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:10:29,713 INFO L87 Difference]: Start difference. First operand 160 states and 209 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 00:10:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:30,840 INFO L93 Difference]: Finished difference Result 232 states and 294 transitions. [2023-11-25 00:10:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:10:30,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 65 [2023-11-25 00:10:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:30,850 INFO L225 Difference]: With dead ends: 232 [2023-11-25 00:10:30,851 INFO L226 Difference]: Without dead ends: 232 [2023-11-25 00:10:30,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:10:30,853 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 48 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:30,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 359 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-25 00:10:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-25 00:10:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 202. [2023-11-25 00:10:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 185 states have (on average 1.2378378378378379) internal successors, (229), 196 states have internal predecessors, (229), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:10:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 255 transitions. [2023-11-25 00:10:30,873 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 255 transitions. Word has length 65 [2023-11-25 00:10:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:30,874 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 255 transitions. [2023-11-25 00:10:30,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 00:10:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 255 transitions. [2023-11-25 00:10:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-25 00:10:30,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:30,877 INFO L195 NwaCegarLoop]: trace histogram [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 00:10:30,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:31,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:31,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:31,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -78758650, now seen corresponding path program 1 times [2023-11-25 00:10:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774680418] [2023-11-25 00:10:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:31,087 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 00:10:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:31,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:31,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:31,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:10:31,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:10:31,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:31,688 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:31,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774680418] [2023-11-25 00:10:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774680418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:31,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:10:31,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:10:31,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722072462] [2023-11-25 00:10:31,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:31,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:10:31,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:31,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:10:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:10:31,700 INFO L87 Difference]: Start difference. First operand 202 states and 255 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:10:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:31,790 INFO L93 Difference]: Finished difference Result 204 states and 258 transitions. [2023-11-25 00:10:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:10:31,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 78 [2023-11-25 00:10:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:31,797 INFO L225 Difference]: With dead ends: 204 [2023-11-25 00:10:31,798 INFO L226 Difference]: Without dead ends: 204 [2023-11-25 00:10:31,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 00:10:31,803 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:31,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 584 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:10:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-25 00:10:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-11-25 00:10:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 186 states have (on average 1.2419354838709677) internal successors, (231), 198 states have internal predecessors, (231), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-25 00:10:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 258 transitions. [2023-11-25 00:10:31,828 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 258 transitions. Word has length 78 [2023-11-25 00:10:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:31,829 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 258 transitions. [2023-11-25 00:10:31,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:10:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 258 transitions. [2023-11-25 00:10:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-25 00:10:31,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:31,832 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 00:10:31,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:32,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:32,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1518640872, now seen corresponding path program 1 times [2023-11-25 00:10:32,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:32,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722138683] [2023-11-25 00:10:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:32,042 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 00:10:32,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:32,043 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:32,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:32,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:32,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:10:32,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:32,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:32,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722138683] [2023-11-25 00:10:32,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722138683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:32,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [56688455] [2023-11-25 00:10:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:32,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:32,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:32,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-25 00:10:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:33,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:33,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:10:33,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [56688455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66607030] [2023-11-25 00:10:33,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:33,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:33,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:33,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:33,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:10:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:34,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:10:34,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:10:34,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:10:34,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66607030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:34,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:10:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-11-25 00:10:34,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390951299] [2023-11-25 00:10:34,863 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:10:34,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-25 00:10:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:34,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-25 00:10:34,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:10:34,866 INFO L87 Difference]: Start difference. First operand 204 states and 258 transitions. Second operand has 12 states, 10 states have (on average 20.5) internal successors, (205), 12 states have internal predecessors, (205), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-25 00:10:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:36,065 INFO L93 Difference]: Finished difference Result 445 states and 559 transitions. [2023-11-25 00:10:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-25 00:10:36,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 20.5) internal successors, (205), 12 states have internal predecessors, (205), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-25 00:10:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:36,070 INFO L225 Difference]: With dead ends: 445 [2023-11-25 00:10:36,070 INFO L226 Difference]: Without dead ends: 445 [2023-11-25 00:10:36,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-25 00:10:36,072 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 382 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:36,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1578 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-25 00:10:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-25 00:10:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 444. [2023-11-25 00:10:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 416 states have (on average 1.21875) internal successors, (507), 428 states have internal predecessors, (507), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2023-11-25 00:10:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 555 transitions. [2023-11-25 00:10:36,104 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 555 transitions. Word has length 80 [2023-11-25 00:10:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:36,105 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 555 transitions. [2023-11-25 00:10:36,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 20.5) internal successors, (205), 12 states have internal predecessors, (205), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-25 00:10:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 555 transitions. [2023-11-25 00:10:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-11-25 00:10:36,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:36,112 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 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 00:10:36,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:36,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:36,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:36,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:36,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:36,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1861207851, now seen corresponding path program 1 times [2023-11-25 00:10:36,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:36,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033403824] [2023-11-25 00:10:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:36,731 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 00:10:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:36,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:36,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:38,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:10:38,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 129 proven. 10 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-25 00:10:38,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 112 proven. 26 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-25 00:10:38,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033403824] [2023-11-25 00:10:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033403824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1851296856] [2023-11-25 00:10:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:38,600 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:38,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:38,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:38,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-25 00:10:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:40,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:10:40,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 129 proven. 10 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-25 00:10:40,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 112 proven. 26 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-25 00:10:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1851296856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:40,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751466418] [2023-11-25 00:10:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:40,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:40,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:40,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:40,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-25 00:10:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:42,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:10:42,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 128 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-25 00:10:42,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 128 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-25 00:10:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751466418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:42,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:10:42,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-11-25 00:10:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345570684] [2023-11-25 00:10:42,685 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:10:42,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-25 00:10:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:42,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-25 00:10:42,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-25 00:10:42,690 INFO L87 Difference]: Start difference. First operand 444 states and 555 transitions. Second operand has 20 states, 16 states have (on average 8.375) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-25 00:10:44,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:44,302 INFO L93 Difference]: Finished difference Result 463 states and 595 transitions. [2023-11-25 00:10:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-25 00:10:44,304 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 8.375) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 249 [2023-11-25 00:10:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:44,309 INFO L225 Difference]: With dead ends: 463 [2023-11-25 00:10:44,309 INFO L226 Difference]: Without dead ends: 460 [2023-11-25 00:10:44,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1513 GetRequests, 1470 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-11-25 00:10:44,312 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 33 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:44,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2486 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-25 00:10:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-25 00:10:44,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2023-11-25 00:10:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 428 states have (on average 1.22196261682243) internal successors, (523), 440 states have internal predecessors, (523), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2023-11-25 00:10:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 571 transitions. [2023-11-25 00:10:44,353 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 571 transitions. Word has length 249 [2023-11-25 00:10:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:44,354 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 571 transitions. [2023-11-25 00:10:44,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 8.375) internal successors, (134), 20 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-25 00:10:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 571 transitions. [2023-11-25 00:10:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-25 00:10:44,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:44,360 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 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 00:10:44,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:44,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:44,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:44,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:44,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:44,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash -148825621, now seen corresponding path program 2 times [2023-11-25 00:10:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207449150] [2023-11-25 00:10:44,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:10:44,979 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 00:10:44,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:44,981 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:44,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/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 00:10:46,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:10:46,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:10:46,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-25 00:10:46,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 213 proven. 55 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-25 00:10:46,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 112 proven. 155 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-25 00:10:47,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207449150] [2023-11-25 00:10:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207449150] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:47,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [354345110] [2023-11-25 00:10:47,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:10:47,844 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:47,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:47,846 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:47,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-25 00:10:50,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:10:50,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:10:50,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-25 00:10:50,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 213 proven. 55 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-25 00:10:50,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 112 proven. 155 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-25 00:10:50,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [354345110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012712732] [2023-11-25 00:10:50,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-25 00:10:50,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:50,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:50,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:50,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f40cc43-8ee2-444d-99e0-e9545f4a81e2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-25 00:10:52,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-25 00:10:52,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:10:52,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:10:52,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-25 00:10:53,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-25 00:10:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012712732] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:54,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-25 00:10:54,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-11-25 00:10:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113320039] [2023-11-25 00:10:54,879 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-25 00:10:54,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-25 00:10:54,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:54,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-25 00:10:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-11-25 00:10:54,886 INFO L87 Difference]: Start difference. First operand 456 states and 571 transitions. Second operand has 36 states, 34 states have (on average 17.41176470588235) internal successors, (592), 36 states have internal predecessors, (592), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8)