./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:58:00,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:58:00,961 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-24 23:58:00,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:58:00,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:58:01,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:58:01,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:58:01,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:58:01,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:58:01,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:58:01,035 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:58:01,036 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:58:01,037 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:58:01,039 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:58:01,039 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:58:01,040 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:58:01,040 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:58:01,041 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:58:01,041 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:58:01,042 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:58:01,042 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:58:01,043 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:58:01,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:58:01,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:58:01,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:58:01,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:58:01,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:58:01,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:58:01,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:58:01,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:58:01,049 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:58:01,050 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:58:01,050 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:58:01,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:58:01,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:58:01,065 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:58:01,065 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:58:01,065 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:58:01,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:58:01,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:58:01,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:58:01,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:58:01,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:58:01,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:01,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:58:01,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:58:01,069 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:58:01,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:58:01,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:58:01,070 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:58:01,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:58:01,070 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_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2023-11-24 23:58:01,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:58:01,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:58:01,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:58:01,441 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:58:01,442 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:58:01,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-24 23:58:04,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:58:04,866 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:58:04,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-24 23:58:04,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data/0cf3bb612/77e0c58c05c043d0a06b4617d9b6b5d1/FLAG70f8f1c18 [2023-11-24 23:58:04,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data/0cf3bb612/77e0c58c05c043d0a06b4617d9b6b5d1 [2023-11-24 23:58:04,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:58:04,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:58:04,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:04,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:58:04,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:58:04,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:04" (1/1) ... [2023-11-24 23:58:04,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19750e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:04, skipping insertion in model container [2023-11-24 23:58:04,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:04" (1/1) ... [2023-11-24 23:58:05,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:58:05,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:05,785 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) [2023-11-24 23:58:05,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@15b8e558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:05, skipping insertion in model container [2023-11-24 23:58:05,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:05,787 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:58:05,789 INFO L158 Benchmark]: Toolchain (without parser) took 861.00ms. Allocated memory is still 155.2MB. Free memory was 119.5MB in the beginning and 99.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:58:05,789 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:58:05,790 INFO L158 Benchmark]: CACSL2BoogieTranslator took 855.62ms. Allocated memory is still 155.2MB. Free memory was 119.5MB in the beginning and 99.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:58:05,792 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 125.8MB. Free memory is still 98.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 855.62ms. Allocated memory is still 155.2MB. Free memory was 119.5MB in the beginning and 99.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:58:08,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:58:08,479 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-24 23:58:08,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:58:08,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:58:08,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:58:08,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:58:08,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:58:08,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:58:08,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:58:08,548 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:58:08,549 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:58:08,549 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:58:08,551 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:58:08,552 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:58:08,552 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:58:08,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:58:08,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:58:08,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:58:08,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:58:08,556 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:58:08,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:58:08,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:58:08,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:58:08,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:58:08,559 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:58:08,559 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:58:08,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:58:08,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:58:08,561 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:58:08,562 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:58:08,563 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:58:08,563 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:58:08,563 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:58:08,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:58:08,564 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:58:08,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:58:08,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:58:08,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:58:08,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:58:08,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:08,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:58:08,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:58:08,572 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:58:08,573 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:58:08,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:58:08,573 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:58:08,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:58:08,574 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_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2023-11-24 23:58:09,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:58:09,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:58:09,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:58:09,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:58:09,080 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:58:09,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-24 23:58:12,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:58:12,735 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:58:12,735 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2023-11-24 23:58:12,757 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data/8288b8415/fc6c60f5e8894fff88c843d99cf4d970/FLAG173d94677 [2023-11-24 23:58:12,773 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/data/8288b8415/fc6c60f5e8894fff88c843d99cf4d970 [2023-11-24 23:58:12,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:58:12,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:58:12,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:12,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:58:12,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:58:12,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:12" (1/1) ... [2023-11-24 23:58:12,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7076e458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:12, skipping insertion in model container [2023-11-24 23:58:12,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:12" (1/1) ... [2023-11-24 23:58:12,859 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:58:13,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:13,714 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:58:13,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:58:13,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:13,894 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:58:14,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:14,101 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:58:14,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14 WrapperNode [2023-11-24 23:58:14,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:14,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:14,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:58:14,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:58:14,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,274 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1161 [2023-11-24 23:58:14,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:14,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:58:14,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:58:14,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:58:14,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,397 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:58:14,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:58:14,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:58:14,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:58:14,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:14,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:58:14,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:58:14,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:58:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:58:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:58:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:58:14,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:58:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:58:14,525 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:58:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:58:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:58:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:58:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:58:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:58:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:58:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:58:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:58:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:58:14,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:58:14,754 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:58:14,757 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:58:26,816 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:58:26,891 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:58:26,891 INFO L309 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-24 23:58:26,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:26 BoogieIcfgContainer [2023-11-24 23:58:26,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:58:26,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:58:26,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:58:26,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:58:26,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:58:12" (1/3) ... [2023-11-24 23:58:26,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb3cea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:26, skipping insertion in model container [2023-11-24 23:58:26,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14" (2/3) ... [2023-11-24 23:58:26,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb3cea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:26, skipping insertion in model container [2023-11-24 23:58:26,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:26" (3/3) ... [2023-11-24 23:58:26,901 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2023-11-24 23:58:26,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:58:26,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:58:26,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:58:26,977 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;@38d95d67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:58:26,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:58:26,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 192 states have (on average 1.6770833333333333) internal successors, (322), 204 states have internal predecessors, (322), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 23:58:26,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:58:26,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:26,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:58:26,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:26,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash 5152245, now seen corresponding path program 1 times [2023-11-24 23:58:27,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:27,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440543895] [2023-11-24 23:58:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:27,012 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 [2023-11-24 23:58:27,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:27,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:27,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:27,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:58:27,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:58:27,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:27,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:27,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440543895] [2023-11-24 23:58:27,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440543895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:27,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:58:27,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:58:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047211177] [2023-11-24 23:58:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:27,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:58:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:58:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:58:27,301 INFO L87 Difference]: Start difference. First operand has 213 states, 192 states have (on average 1.6770833333333333) internal successors, (322), 204 states have internal predecessors, (322), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:27,596 INFO L93 Difference]: Finished difference Result 386 states and 510 transitions. [2023-11-24 23:58:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:58:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:58:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:27,614 INFO L225 Difference]: With dead ends: 386 [2023-11-24 23:58:27,615 INFO L226 Difference]: Without dead ends: 385 [2023-11-24 23:58:27,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:58:27,620 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 213 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:27,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 612 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:58:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-24 23:58:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 212. [2023-11-24 23:58:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 192 states have (on average 1.3125) internal successors, (252), 203 states have internal predecessors, (252), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 23:58:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 284 transitions. [2023-11-24 23:58:27,688 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 284 transitions. Word has length 6 [2023-11-24 23:58:27,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:27,688 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 284 transitions. [2023-11-24 23:58:27,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:27,689 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 284 transitions. [2023-11-24 23:58:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-24 23:58:27,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:27,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:27,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:27,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:27,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:27,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1444891251, now seen corresponding path program 1 times [2023-11-24 23:58:27,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734033514] [2023-11-24 23:58:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:27,913 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 [2023-11-24 23:58:27,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:27,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:27,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:28,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:58:28,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:58:28,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:28,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:28,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734033514] [2023-11-24 23:58:28,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734033514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:28,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:58:28,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:58:28,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315370282] [2023-11-24 23:58:28,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:28,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:58:28,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:58:28,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:58:28,794 INFO L87 Difference]: Start difference. First operand 212 states and 284 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:28,987 INFO L93 Difference]: Finished difference Result 216 states and 280 transitions. [2023-11-24 23:58:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:58:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-11-24 23:58:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:28,996 INFO L225 Difference]: With dead ends: 216 [2023-11-24 23:58:28,998 INFO L226 Difference]: Without dead ends: 216 [2023-11-24 23:58:28,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:58:29,001 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 36 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:29,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 729 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:58:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-24 23:58:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2023-11-24 23:58:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 195 states have (on average 1.2666666666666666) internal successors, (247), 206 states have internal predecessors, (247), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 23:58:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2023-11-24 23:58:29,050 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 112 [2023-11-24 23:58:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:29,050 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2023-11-24 23:58:29,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2023-11-24 23:58:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-24 23:58:29,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:29,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:29,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:29,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:29,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:29,264 INFO L85 PathProgramCache]: Analyzing trace with hash -362095079, now seen corresponding path program 1 times [2023-11-24 23:58:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:29,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477740042] [2023-11-24 23:58:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:29,266 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 [2023-11-24 23:58:29,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:29,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:29,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:29,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:58:29,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:58:30,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:30,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477740042] [2023-11-24 23:58:30,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477740042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:30,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:58:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:58:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139327564] [2023-11-24 23:58:30,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:30,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:58:30,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:30,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:58:30,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:58:30,341 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:30,925 INFO L93 Difference]: Finished difference Result 257 states and 325 transitions. [2023-11-24 23:58:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:58:30,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-11-24 23:58:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:30,934 INFO L225 Difference]: With dead ends: 257 [2023-11-24 23:58:30,934 INFO L226 Difference]: Without dead ends: 257 [2023-11-24 23:58:30,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:58:30,935 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 11 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:30,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 522 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:58:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-24 23:58:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2023-11-24 23:58:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 237 states have (on average 1.2362869198312236) internal successors, (293), 248 states have internal predecessors, (293), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-24 23:58:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 325 transitions. [2023-11-24 23:58:30,954 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 325 transitions. Word has length 112 [2023-11-24 23:58:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:30,955 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 325 transitions. [2023-11-24 23:58:30,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:58:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 325 transitions. [2023-11-24 23:58:30,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 23:58:30,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:30,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:30,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:31,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:31,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:31,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -724788170, now seen corresponding path program 1 times [2023-11-24 23:58:31,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609175023] [2023-11-24 23:58:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:31,172 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 [2023-11-24 23:58:31,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:31,173 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:31,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:32,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:58:32,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:58:32,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:32,086 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:32,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609175023] [2023-11-24 23:58:32,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609175023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:32,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:58:32,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:58:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203207374] [2023-11-24 23:58:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:32,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:58:32,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:58:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:58:32,089 INFO L87 Difference]: Start difference. First operand 257 states and 325 transitions. Second operand has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:58:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:32,192 INFO L93 Difference]: Finished difference Result 259 states and 329 transitions. [2023-11-24 23:58:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:58:32,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2023-11-24 23:58:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:32,196 INFO L225 Difference]: With dead ends: 259 [2023-11-24 23:58:32,196 INFO L226 Difference]: Without dead ends: 259 [2023-11-24 23:58:32,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:58:32,197 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:32,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 791 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:58:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-24 23:58:32,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-11-24 23:58:32,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 238 states have (on average 1.2394957983193278) internal successors, (295), 250 states have internal predecessors, (295), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-24 23:58:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 329 transitions. [2023-11-24 23:58:32,215 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 329 transitions. Word has length 125 [2023-11-24 23:58:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:32,215 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 329 transitions. [2023-11-24 23:58:32,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:58:32,216 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 329 transitions. [2023-11-24 23:58:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-24 23:58:32,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:32,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:32,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:32,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:32,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:32,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1898208220, now seen corresponding path program 1 times [2023-11-24 23:58:32,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:32,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716947217] [2023-11-24 23:58:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:32,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:58:32,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:32,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:32,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:33,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:58:33,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:58:33,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:58:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:58:33,422 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716947217] [2023-11-24 23:58:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716947217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:58:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [909367402] [2023-11-24 23:58:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:33,423 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:58:33,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:58:33,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:58:33,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-24 23:58:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:34,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:58:34,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:58:34,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:34,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [909367402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:34,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:58:34,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-24 23:58:34,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801219607] [2023-11-24 23:58:34,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:34,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:58:34,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:58:34,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:58:34,369 INFO L87 Difference]: Start difference. First operand 259 states and 329 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:58:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:34,524 INFO L93 Difference]: Finished difference Result 280 states and 350 transitions. [2023-11-24 23:58:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:58:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 127 [2023-11-24 23:58:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:34,528 INFO L225 Difference]: With dead ends: 280 [2023-11-24 23:58:34,528 INFO L226 Difference]: Without dead ends: 280 [2023-11-24 23:58:34,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:58:34,529 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 9 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:34,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 484 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:58:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-24 23:58:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2023-11-24 23:58:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 258 states have (on average 1.2209302325581395) internal successors, (315), 270 states have internal predecessors, (315), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-24 23:58:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 349 transitions. [2023-11-24 23:58:34,543 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 349 transitions. Word has length 127 [2023-11-24 23:58:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:34,543 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 349 transitions. [2023-11-24 23:58:34,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:58:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 349 transitions. [2023-11-24 23:58:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-24 23:58:34,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:34,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:34,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:58:34,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:34,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:34,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2091937824, now seen corresponding path program 1 times [2023-11-24 23:58:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208939315] [2023-11-24 23:58:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:34,954 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 [2023-11-24 23:58:34,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:34,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:34,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 23:58:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:35,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:58:35,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:58:35,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:58:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:58:35,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:35,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208939315] [2023-11-24 23:58:35,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208939315] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:58:35,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [340543153] [2023-11-24 23:58:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:35,927 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:58:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:58:35,935 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:58:35,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-24 23:58:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:36,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:58:36,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:58:37,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:37,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [340543153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:37,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:58:37,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-24 23:58:37,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362027461] [2023-11-24 23:58:37,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:37,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:58:37,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:58:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:58:37,634 INFO L87 Difference]: Start difference. First operand 279 states and 349 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:58:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:38,471 INFO L93 Difference]: Finished difference Result 382 states and 478 transitions. [2023-11-24 23:58:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:58:38,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 127 [2023-11-24 23:58:38,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:38,480 INFO L225 Difference]: With dead ends: 382 [2023-11-24 23:58:38,480 INFO L226 Difference]: Without dead ends: 382 [2023-11-24 23:58:38,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:58:38,481 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 57 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:38,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 521 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:58:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-24 23:58:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2023-11-24 23:58:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 358 states have (on average 1.2206703910614525) internal successors, (437), 370 states have internal predecessors, (437), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-24 23:58:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 478 transitions. [2023-11-24 23:58:38,498 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 478 transitions. Word has length 127 [2023-11-24 23:58:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:38,499 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 478 transitions. [2023-11-24 23:58:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:58:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 478 transitions. [2023-11-24 23:58:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 23:58:38,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:38,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:38,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-11-24 23:58:38,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:58:38,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:38,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:38,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1143883942, now seen corresponding path program 1 times [2023-11-24 23:58:38,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:38,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925654123] [2023-11-24 23:58:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:38,910 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 [2023-11-24 23:58:38,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:38,911 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:38,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 23:58:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:39,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:58:39,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 23:58:39,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:58:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:58:40,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925654123] [2023-11-24 23:58:40,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925654123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:58:40,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [206718369] [2023-11-24 23:58:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:40,047 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:58:40,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:58:40,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:58:40,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-24 23:58:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:41,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:58:41,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 23:58:41,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:41,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [206718369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:41,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:58:41,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-24 23:58:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300724926] [2023-11-24 23:58:41,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:41,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:58:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:58:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:58:41,351 INFO L87 Difference]: Start difference. First operand 382 states and 478 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:58:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:58:41,513 INFO L93 Difference]: Finished difference Result 350 states and 424 transitions. [2023-11-24 23:58:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:58:41,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 142 [2023-11-24 23:58:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:58:41,518 INFO L225 Difference]: With dead ends: 350 [2023-11-24 23:58:41,520 INFO L226 Difference]: Without dead ends: 350 [2023-11-24 23:58:41,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:58:41,522 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 39 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:58:41,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 693 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:58:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-24 23:58:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2023-11-24 23:58:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 324 states have (on average 1.1759259259259258) internal successors, (381), 336 states have internal predecessors, (381), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-24 23:58:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 422 transitions. [2023-11-24 23:58:41,544 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 422 transitions. Word has length 142 [2023-11-24 23:58:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:58:41,545 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 422 transitions. [2023-11-24 23:58:41,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 23:58:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 422 transitions. [2023-11-24 23:58:41,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 23:58:41,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:41,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:41,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:58:41,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:58:41,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-24 23:58:41,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:58:41,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1300836428, now seen corresponding path program 1 times [2023-11-24 23:58:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763497118] [2023-11-24 23:58:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:41,961 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 [2023-11-24 23:58:41,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:41,962 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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) [2023-11-24 23:58:41,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/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 [2023-11-24 23:58:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:42,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:58:42,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 23:58:42,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:58:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-24 23:58:43,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:58:43,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763497118] [2023-11-24 23:58:43,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763497118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:58:43,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [650770825] [2023-11-24 23:58:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:43,099 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:58:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:58:43,103 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:58:43,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ad96c8-c3fe-43a4-a77b-0cc9bfa852d6/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-24 23:58:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:58:44,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:58:44,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:58:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-24 23:58:44,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:58:44,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [650770825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:58:44,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:58:44,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-24 23:58:44,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015346125] [2023-11-24 23:58:44,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:58:44,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:58:44,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:58:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:58:44,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:58:44,684 INFO L87 Difference]: Start difference. First operand 348 states and 422 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:58:47,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:58:49,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:58:52,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:58:54,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []