./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire --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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:23,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:23,495 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-23 21:32:23,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:23,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:23,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:23,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:23,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:23,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:23,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:23,578 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:23,579 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:23,579 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:23,582 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:23,582 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:23,583 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:23,583 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:23,584 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:23,584 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:23,585 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:23,586 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:23,586 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:23,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:23,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:23,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:23,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:23,590 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:23,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:23,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:23,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:23,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:23,594 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:23,595 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:23,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:23,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:23,595 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:23,596 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:23,596 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:23,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:23,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:23,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:23,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:23,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:23,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:23,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:23,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:23,599 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:23,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:23,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:23,600 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:23,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:23,601 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_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2023-11-23 21:32:23,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:23,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:23,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:23,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:23,985 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:23,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2023-11-23 21:32:28,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:28,585 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:28,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2023-11-23 21:32:28,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data/a372d85ef/38a49f3014564844bb1becfe39456c9d/FLAG23ad9e1ee [2023-11-23 21:32:28,634 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data/a372d85ef/38a49f3014564844bb1becfe39456c9d [2023-11-23 21:32:28,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:28,640 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:28,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:28,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:28,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:28,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:28" (1/1) ... [2023-11-23 21:32:28,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f08241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:28, skipping insertion in model container [2023-11-23 21:32:28,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:28" (1/1) ... [2023-11-23 21:32:28,745 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:29,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:29,934 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) [2023-11-23 21:32:29,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ed3b5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:29, skipping insertion in model container [2023-11-23 21:32:29,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:29,936 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:32:29,939 INFO L158 Benchmark]: Toolchain (without parser) took 1297.65ms. Allocated memory is still 148.9MB. Free memory was 101.7MB in the beginning and 109.9MB in the end (delta: -8.2MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-11-23 21:32:29,939 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 109.1MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:32:29,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1294.08ms. Allocated memory is still 148.9MB. Free memory was 101.3MB in the beginning and 109.9MB in the end (delta: -8.6MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-11-23 21:32:29,943 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 109.1MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1294.08ms. Allocated memory is still 148.9MB. Free memory was 101.3MB in the beginning and 109.9MB in the end (delta: -8.6MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire --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 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:32,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:32,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-23 21:32:32,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:32,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:32,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:32,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:32,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:32,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:32,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:32,994 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:32,994 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:32,995 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:32,996 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:32,997 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:32,997 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:32,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:32,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:32,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:33,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:33,001 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:33,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:33,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:33,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:33,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:33,003 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:33,003 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:33,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:33,004 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:33,004 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:33,006 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:32:33,006 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:32:33,006 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:33,006 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:33,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:33,007 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:33,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:33,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:32:33,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:33,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:33,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:33,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:33,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:33,010 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:32:33,010 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:32:33,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:33,011 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:33,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:33,011 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_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2023-11-23 21:32:33,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:33,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:33,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:33,478 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:33,479 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:33,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2023-11-23 21:32:36,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:37,262 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:37,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2023-11-23 21:32:37,308 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data/ce534f644/d4a164eb8571445795d048b9faa590e6/FLAGdbeb08a82 [2023-11-23 21:32:37,332 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/data/ce534f644/d4a164eb8571445795d048b9faa590e6 [2023-11-23 21:32:37,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:37,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:37,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:37,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:37,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:37,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:37" (1/1) ... [2023-11-23 21:32:37,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e454dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:37, skipping insertion in model container [2023-11-23 21:32:37,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:37" (1/1) ... [2023-11-23 21:32:37,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:38,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:38,590 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:32:38,616 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:38,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:38,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:38,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:38,954 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:38,962 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:38,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38 WrapperNode [2023-11-23 21:32:38,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:38,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:38,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:38,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:38,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,126 INFO L138 Inliner]: procedures = 180, calls = 732, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2867 [2023-11-23 21:32:39,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:39,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:39,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:39,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:39,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:39,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:39,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:39,337 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:39,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (1/1) ... [2023-11-23 21:32:39,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:39,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:39,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:39,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:32:39,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:32:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:32:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:32:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:32:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:32:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:32:39,463 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:32:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:32:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:32:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:32:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:39,726 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:39,729 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:32:50,569 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:32:50,644 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:32:50,645 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-23 21:32:50,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:50 BoogieIcfgContainer [2023-11-23 21:32:50,646 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:32:50,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:32:50,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:32:50,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:32:50,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:37" (1/3) ... [2023-11-23 21:32:50,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f91b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:50, skipping insertion in model container [2023-11-23 21:32:50,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:38" (2/3) ... [2023-11-23 21:32:50,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f91b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:32:50, skipping insertion in model container [2023-11-23 21:32:50,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:32:50" (3/3) ... [2023-11-23 21:32:50,657 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-1.i [2023-11-23 21:32:50,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:32:50,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:32:50,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:32:50,771 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;@5f95b69e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:32:50,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:32:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 1172 states, 661 states have (on average 1.91981845688351) internal successors, (1269), 1165 states have internal predecessors, (1269), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-23 21:32:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:32:50,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:50,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:32:50,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:32:50,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1533051042, now seen corresponding path program 1 times [2023-11-23 21:32:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110299955] [2023-11-23 21:32:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:50,818 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 [2023-11-23 21:32:50,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:50,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:32:50,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:51,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:32:51,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:51,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:51,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:51,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110299955] [2023-11-23 21:32:51,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110299955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:51,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:51,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224856348] [2023-11-23 21:32:51,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:51,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:32:51,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:32:51,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:32:51,106 INFO L87 Difference]: Start difference. First operand has 1172 states, 661 states have (on average 1.91981845688351) internal successors, (1269), 1165 states have internal predecessors, (1269), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 2 states, 2 states have (on average 3.0) 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) [2023-11-23 21:32:51,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:51,355 INFO L93 Difference]: Finished difference Result 1170 states and 2216 transitions. [2023-11-23 21:32:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:32:51,372 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) 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 [2023-11-23 21:32:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:51,453 INFO L225 Difference]: With dead ends: 1170 [2023-11-23 21:32:51,454 INFO L226 Difference]: Without dead ends: 1169 [2023-11-23 21:32:51,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:32:51,459 INFO L413 NwaCegarLoop]: 2212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:51,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2212 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:32:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2023-11-23 21:32:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2023-11-23 21:32:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 660 states have (on average 1.8287878787878789) internal successors, (1207), 1162 states have internal predecessors, (1207), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-23 21:32:52,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 2215 transitions. [2023-11-23 21:32:52,165 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 2215 transitions. Word has length 6 [2023-11-23 21:32:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:52,165 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 2215 transitions. [2023-11-23 21:32:52,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) 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) [2023-11-23 21:32:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 2215 transitions. [2023-11-23 21:32:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:32:52,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:52,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:52,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:52,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:52,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:32:52,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -111625012, now seen corresponding path program 1 times [2023-11-23 21:32:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:52,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027355621] [2023-11-23 21:32:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:52,371 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 [2023-11-23 21:32:52,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:52,401 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:32:52,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:52,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:32:52,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:52,687 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:52,688 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:52,689 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:52,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-23 21:32:52,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:32:52,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-23 21:32:52,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:52,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:52,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027355621] [2023-11-23 21:32:52,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027355621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:52,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:52,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:52,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425911208] [2023-11-23 21:32:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:52,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:52,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:52,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:52,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:52,848 INFO L87 Difference]: Start difference. First operand 1169 states and 2215 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-23 21:32:57,441 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 [] [2023-11-23 21:33:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:02,712 INFO L93 Difference]: Finished difference Result 2273 states and 4352 transitions. [2023-11-23 21:33:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:02,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-23 21:33:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:02,737 INFO L225 Difference]: With dead ends: 2273 [2023-11-23 21:33:02,737 INFO L226 Difference]: Without dead ends: 2273 [2023-11-23 21:33:02,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:02,739 INFO L413 NwaCegarLoop]: 2222 mSDtfsCounter, 1132 mSDsluCounter, 3866 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:02,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 6088 Invalid, 653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2023-11-23 21:33:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2023-11-23 21:33:03,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1171. [2023-11-23 21:33:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 662 states have (on average 1.8262839879154078) internal successors, (1209), 1164 states have internal predecessors, (1209), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-23 21:33:03,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2217 transitions. [2023-11-23 21:33:03,454 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2217 transitions. Word has length 8 [2023-11-23 21:33:03,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:03,454 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 2217 transitions. [2023-11-23 21:33:03,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-23 21:33:03,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2217 transitions. [2023-11-23 21:33:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 21:33:03,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:03,458 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:33:03,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:03,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:03,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:03,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:03,663 INFO L85 PathProgramCache]: Analyzing trace with hash -208302082, now seen corresponding path program 1 times [2023-11-23 21:33:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:03,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460741976] [2023-11-23 21:33:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:03,665 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 [2023-11-23 21:33:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:03,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:33:03,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:04,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:04,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:04,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:04,244 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460741976] [2023-11-23 21:33:04,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460741976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:04,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:04,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:04,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359618699] [2023-11-23 21:33:04,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:04,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:04,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:04,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:04,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:04,250 INFO L87 Difference]: Start difference. First operand 1171 states and 2217 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-23 21:33:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:04,517 INFO L93 Difference]: Finished difference Result 1175 states and 2213 transitions. [2023-11-23 21:33:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2023-11-23 21:33:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:04,529 INFO L225 Difference]: With dead ends: 1175 [2023-11-23 21:33:04,530 INFO L226 Difference]: Without dead ends: 1175 [2023-11-23 21:33:04,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:04,534 INFO L413 NwaCegarLoop]: 2183 mSDtfsCounter, 36 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6525 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 [2023-11-23 21:33:04,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6525 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:33:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-11-23 21:33:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1174. [2023-11-23 21:33:04,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 665 states have (on average 1.8105263157894738) internal successors, (1204), 1167 states have internal predecessors, (1204), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-23 21:33:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 2212 transitions. [2023-11-23 21:33:04,751 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 2212 transitions. Word has length 64 [2023-11-23 21:33:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:04,752 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 2212 transitions. [2023-11-23 21:33:04,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-23 21:33:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 2212 transitions. [2023-11-23 21:33:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 21:33:04,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:04,758 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:33:04,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:04,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:04,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:04,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1545590642, now seen corresponding path program 1 times [2023-11-23 21:33:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:04,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211886436] [2023-11-23 21:33:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:04,974 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 [2023-11-23 21:33:04,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:04,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:33:04,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:05,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:05,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:05,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:05,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:05,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211886436] [2023-11-23 21:33:05,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211886436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:05,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:05,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:05,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530881771] [2023-11-23 21:33:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:05,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:05,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:05,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:05,961 INFO L87 Difference]: Start difference. First operand 1174 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2023-11-23 21:33:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:06,858 INFO L93 Difference]: Finished difference Result 2265 states and 4320 transitions. [2023-11-23 21:33:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:06,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2023-11-23 21:33:06,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:06,878 INFO L225 Difference]: With dead ends: 2265 [2023-11-23 21:33:06,879 INFO L226 Difference]: Without dead ends: 2265 [2023-11-23 21:33:06,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:06,880 INFO L413 NwaCegarLoop]: 2261 mSDtfsCounter, 1071 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:06,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 4441 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:33:06,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2023-11-23 21:33:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2261. [2023-11-23 21:33:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1252 states have (on average 1.8442492012779552) internal successors, (2309), 2254 states have internal predecessors, (2309), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-11-23 21:33:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 4317 transitions. [2023-11-23 21:33:07,257 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 4317 transitions. Word has length 64 [2023-11-23 21:33:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:07,258 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 4317 transitions. [2023-11-23 21:33:07,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2023-11-23 21:33:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 4317 transitions. [2023-11-23 21:33:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 21:33:07,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:07,262 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] [2023-11-23 21:33:07,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:07,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:07,470 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:07,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash 881030379, now seen corresponding path program 1 times [2023-11-23 21:33:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071099227] [2023-11-23 21:33:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:07,472 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 [2023-11-23 21:33:07,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:07,473 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:33:07,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:08,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:08,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:08,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:08,085 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071099227] [2023-11-23 21:33:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071099227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:08,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:08,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:08,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169519974] [2023-11-23 21:33:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:08,095 INFO L87 Difference]: Start difference. First operand 2261 states and 4317 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (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) [2023-11-23 21:33:08,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:08,256 INFO L93 Difference]: Finished difference Result 2263 states and 4320 transitions. [2023-11-23 21:33:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:08,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (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 77 [2023-11-23 21:33:08,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:08,277 INFO L225 Difference]: With dead ends: 2263 [2023-11-23 21:33:08,277 INFO L226 Difference]: Without dead ends: 2263 [2023-11-23 21:33:08,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:08,278 INFO L413 NwaCegarLoop]: 2199 mSDtfsCounter, 1 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6593 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:08,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6593 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:33:08,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2023-11-23 21:33:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2023-11-23 21:33:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1253 states have (on average 1.8443735035913806) internal successors, (2311), 2256 states have internal predecessors, (2311), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-11-23 21:33:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 4320 transitions. [2023-11-23 21:33:08,796 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 4320 transitions. Word has length 77 [2023-11-23 21:33:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:08,799 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 4320 transitions. [2023-11-23 21:33:08,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (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) [2023-11-23 21:33:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 4320 transitions. [2023-11-23 21:33:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 21:33:08,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:08,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:08,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:09,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:09,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:09,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:09,018 INFO L85 PathProgramCache]: Analyzing trace with hash -947572531, now seen corresponding path program 1 times [2023-11-23 21:33:09,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:09,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486740567] [2023-11-23 21:33:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:09,020 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 [2023-11-23 21:33:09,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:09,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:33:09,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:33:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:09,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:09,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:33:09,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:09,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486740567] [2023-11-23 21:33:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486740567] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:09,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1159941380] [2023-11-23 21:33:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:09,834 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:09,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:33:09,840 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:33:09,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-23 21:33:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:10,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:10,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:33:10,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1159941380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:10,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997587916] [2023-11-23 21:33:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:10,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:10,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:33:10,860 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:10,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:33:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:11,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:11,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:11,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:11,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997587916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:11,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:33:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-23 21:33:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125813312] [2023-11-23 21:33:11,642 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:33:11,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:33:11,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:33:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:33:11,647 INFO L87 Difference]: Start difference. First operand 2263 states and 4320 transitions. Second operand has 11 states, 8 states have (on average 10.75) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:33:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:12,305 INFO L93 Difference]: Finished difference Result 2275 states and 4339 transitions. [2023-11-23 21:33:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:33:12,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 10.75) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2023-11-23 21:33:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:12,358 INFO L225 Difference]: With dead ends: 2275 [2023-11-23 21:33:12,359 INFO L226 Difference]: Without dead ends: 2275 [2023-11-23 21:33:12,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-11-23 21:33:12,362 INFO L413 NwaCegarLoop]: 2198 mSDtfsCounter, 17 mSDsluCounter, 8775 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10973 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:12,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10973 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:33:12,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2023-11-23 21:33:12,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2273. [2023-11-23 21:33:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1262 states have (on average 1.8446909667194928) internal successors, (2328), 2265 states have internal predecessors, (2328), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-11-23 21:33:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4337 transitions. [2023-11-23 21:33:12,838 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4337 transitions. Word has length 79 [2023-11-23 21:33:12,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:12,839 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 4337 transitions. [2023-11-23 21:33:12,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 10.75) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:33:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4337 transitions. [2023-11-23 21:33:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 21:33:12,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:12,841 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-11-23 21:33:12,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:13,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:13,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:13,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:13,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1279830037, now seen corresponding path program 2 times [2023-11-23 21:33:13,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:13,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405391938] [2023-11-23 21:33:13,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:33:13,459 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 [2023-11-23 21:33:13,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:13,461 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:33:13,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_454a0215-f1df-4780-8144-c7ff9012db11/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:33:13,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 21:33:13,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:33:13,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:33:13,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:13,897 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:13,898 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:13,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:13,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-23 21:33:13,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:13,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-23 21:33:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 21:33:13,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:13,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:13,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405391938] [2023-11-23 21:33:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405391938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:13,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:13,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322456362] [2023-11-23 21:33:13,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:13,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:13,994 INFO L87 Difference]: Start difference. First operand 2273 states and 4337 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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)