./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:30,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:30,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 04:48:30,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:30,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:30,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:30,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:30,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:30,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:30,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:30,847 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:30,848 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:30,849 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:30,851 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:48:30,851 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:30,852 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:30,852 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:48:30,853 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:48:30,853 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:30,854 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:48:30,854 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:48:30,855 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:48:30,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:48:30,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:48:30,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:30,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:30,858 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:48:30,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:48:30,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:48:30,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:30,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:30,861 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:48:30,861 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:48:30,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:30,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:30,862 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:48:30,863 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:48:30,863 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:48:30,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:30,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:30,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:30,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:30,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:30,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:30,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:30,866 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:48:30,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:48:30,866 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:30,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:30,867 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_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 [2023-11-19 04:48:31,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:31,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:31,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:31,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:31,271 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:31,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2023-11-19 04:48:34,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:34,819 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:34,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2023-11-19 04:48:34,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data/cf1f58cc7/6e675d4c4609449880fc2588d4dc7275/FLAG1e1bcc53f [2023-11-19 04:48:34,866 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data/cf1f58cc7/6e675d4c4609449880fc2588d4dc7275 [2023-11-19 04:48:34,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:34,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:34,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:34,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:34,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:34,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:34" (1/1) ... [2023-11-19 04:48:34,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8e6095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:34, skipping insertion in model container [2023-11-19 04:48:34,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:34" (1/1) ... [2023-11-19 04:48:34,963 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:35,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:35,738 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 04:48:35,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3eee2a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:35, skipping insertion in model container [2023-11-19 04:48:35,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:35,740 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:48:35,743 INFO L158 Benchmark]: Toolchain (without parser) took 871.56ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 69.7MB in the beginning and 143.0MB in the end (delta: -73.3MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2023-11-19 04:48:35,744 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:48:35,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 868.60ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 69.5MB in the beginning and 143.0MB in the end (delta: -73.5MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2023-11-19 04:48:35,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 868.60ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 69.5MB in the beginning and 143.0MB in the end (delta: -73.5MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:48:38,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:48:38,774 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 04:48:38,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:48:38,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:48:38,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:48:38,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:48:38,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:48:38,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:48:38,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:48:38,831 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:48:38,832 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:48:38,833 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:48:38,834 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:48:38,834 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:48:38,835 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:48:38,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:48:38,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:48:38,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:48:38,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:48:38,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:48:38,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:48:38,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:48:38,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:48:38,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:48:38,842 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:48:38,843 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:48:38,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:48:38,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:48:38,845 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:48:38,845 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:48:38,846 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:48:38,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:48:38,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:48:38,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:48:38,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:48:38,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:48:38,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:48:38,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:48:38,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:38,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:48:38,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:48:38,851 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:48:38,851 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:48:38,852 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:48:38,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:48:38,853 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_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 [2023-11-19 04:48:39,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:48:39,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:48:39,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:48:39,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:48:39,442 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:48:39,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2023-11-19 04:48:43,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:48:43,454 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:48:43,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2023-11-19 04:48:43,477 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data/d943c7005/2370868b773b4c718f01322233584af9/FLAGd7aacceb7 [2023-11-19 04:48:43,493 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/data/d943c7005/2370868b773b4c718f01322233584af9 [2023-11-19 04:48:43,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:48:43,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:48:43,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:43,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:48:43,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:48:43,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0637a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:43, skipping insertion in model container [2023-11-19 04:48:43,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:48:43" (1/1) ... [2023-11-19 04:48:43,590 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:44,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:44,244 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:48:44,264 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:48:44,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:44,407 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:48:44,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:48:44,554 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:48:44,563 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:48:44,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44 WrapperNode [2023-11-19 04:48:44,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:48:44,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:44,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:48:44,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:48:44,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,717 INFO L138 Inliner]: procedures = 180, calls = 299, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1002 [2023-11-19 04:48:44,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:48:44,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:48:44,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:48:44,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:48:44,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:48:44,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:48:44,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:48:44,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:48:44,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (1/1) ... [2023-11-19 04:48:44,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:48:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:48:44,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:48:44,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:48:44,987 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 04:48:44,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 04:48:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:48:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:48:44,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:48:44,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:48:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:48:44,991 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:48:44,991 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-19 04:48:44,992 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-19 04:48:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:48:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:48:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:48:44,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:48:44,993 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 04:48:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:48:44,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:48:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:48:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:48:44,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:48:44,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:48:45,266 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:48:45,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:48:53,437 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:48:53,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:48:53,451 INFO L302 CfgBuilder]: Removed 62 assume(true) statements. [2023-11-19 04:48:53,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:53 BoogieIcfgContainer [2023-11-19 04:48:53,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:48:53,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:48:53,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:48:53,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:48:53,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:48:43" (1/3) ... [2023-11-19 04:48:53,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cca4b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:53, skipping insertion in model container [2023-11-19 04:48:53,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:48:44" (2/3) ... [2023-11-19 04:48:53,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cca4b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:48:53, skipping insertion in model container [2023-11-19 04:48:53,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:48:53" (3/3) ... [2023-11-19 04:48:53,470 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-1.i [2023-11-19 04:48:53,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:48:53,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:48:53,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:48:53,558 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;@57931f1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:48:53,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:48:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 208 states have (on average 1.6682692307692308) internal successors, (347), 227 states have internal predecessors, (347), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 04:48:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:48:53,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:53,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:48:53,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:48:53,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash 877740678, now seen corresponding path program 1 times [2023-11-19 04:48:53,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:48:53,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449955490] [2023-11-19 04:48:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:53,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:48:53,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:48:53,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:48:53,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:48:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:53,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:48:53,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:48:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:48:53,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:48:53,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:48:53,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449955490] [2023-11-19 04:48:53,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449955490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:48:53,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:48:53,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:48:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370331396] [2023-11-19 04:48:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:48:53,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:48:53,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:48:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:48:53,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:48:53,954 INFO L87 Difference]: Start difference. First operand has 237 states, 208 states have (on average 1.6682692307692308) internal successors, (347), 227 states have internal predecessors, (347), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:48:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:48:53,997 INFO L93 Difference]: Finished difference Result 235 states and 320 transitions. [2023-11-19 04:48:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:48:53,999 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-11-19 04:48:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:48:54,011 INFO L225 Difference]: With dead ends: 235 [2023-11-19 04:48:54,011 INFO L226 Difference]: Without dead ends: 233 [2023-11-19 04:48:54,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:48:54,017 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:48:54,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:48:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-19 04:48:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2023-11-19 04:48:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 206 states have (on average 1.3398058252427185) internal successors, (276), 223 states have internal predecessors, (276), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:48:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 318 transitions. [2023-11-19 04:48:54,084 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 318 transitions. Word has length 7 [2023-11-19 04:48:54,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:48:54,085 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 318 transitions. [2023-11-19 04:48:54,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:48:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 318 transitions. [2023-11-19 04:48:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:48:54,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:48:54,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:48:54,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:48:54,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:48:54,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:48:54,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:48:54,291 INFO L85 PathProgramCache]: Analyzing trace with hash 775570313, now seen corresponding path program 1 times [2023-11-19 04:48:54,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:48:54,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438017224] [2023-11-19 04:48:54,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:48:54,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:48:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:48:54,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:48:54,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:48:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:48:54,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:48:54,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:48:54,628 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:48:54,629 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:48:54,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:48:54,644 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 [2023-11-19 04:48:54,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:48:54,758 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 [2023-11-19 04:48:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:48:54,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:48:54,788 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:48:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438017224] [2023-11-19 04:48:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438017224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:48:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:48:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:48:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781215491] [2023-11-19 04:48:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:48:54,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:48:54,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:48:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:48:54,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:48:54,793 INFO L87 Difference]: Start difference. First operand 233 states and 318 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:01,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:49:04,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:49:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:06,010 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2023-11-19 04:49:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:06,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-19 04:49:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:06,016 INFO L225 Difference]: With dead ends: 354 [2023-11-19 04:49:06,016 INFO L226 Difference]: Without dead ends: 354 [2023-11-19 04:49:06,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:06,019 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 149 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:06,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 808 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2023-11-19 04:49:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-19 04:49:06,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 235. [2023-11-19 04:49:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 208 states have (on average 1.3365384615384615) internal successors, (278), 225 states have internal predecessors, (278), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:49:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 320 transitions. [2023-11-19 04:49:06,054 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 320 transitions. Word has length 9 [2023-11-19 04:49:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:06,054 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 320 transitions. [2023-11-19 04:49:06,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 320 transitions. [2023-11-19 04:49:06,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:49:06,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:06,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:06,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 04:49:06,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:06,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:49:06,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1158076757, now seen corresponding path program 1 times [2023-11-19 04:49:06,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:06,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936625324] [2023-11-19 04:49:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:06,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:06,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:06,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:06,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:49:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:06,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:06,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:06,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:06,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:49:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936625324] [2023-11-19 04:49:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936625324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:06,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:06,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:06,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029900194] [2023-11-19 04:49:06,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:06,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:49:06,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:49:06,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:49:06,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:49:06,926 INFO L87 Difference]: Start difference. First operand 235 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:07,141 INFO L93 Difference]: Finished difference Result 239 states and 316 transitions. [2023-11-19 04:49:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 04:49:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:07,145 INFO L225 Difference]: With dead ends: 239 [2023-11-19 04:49:07,146 INFO L226 Difference]: Without dead ends: 239 [2023-11-19 04:49:07,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:07,148 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 37 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:07,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 840 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:49:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-11-19 04:49:07,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2023-11-19 04:49:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 211 states have (on average 1.2938388625592416) internal successors, (273), 228 states have internal predecessors, (273), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:49:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 315 transitions. [2023-11-19 04:49:07,175 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 315 transitions. Word has length 67 [2023-11-19 04:49:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:07,175 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 315 transitions. [2023-11-19 04:49:07,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 315 transitions. [2023-11-19 04:49:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:49:07,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:07,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:07,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 04:49:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:07,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:49:07,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1136190153, now seen corresponding path program 1 times [2023-11-19 04:49:07,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:07,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097853976] [2023-11-19 04:49:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:07,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:07,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:07,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:07,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 04:49:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:08,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:49:08,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:08,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:08,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:49:08,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097853976] [2023-11-19 04:49:08,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097853976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:08,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:08,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:49:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174692091] [2023-11-19 04:49:08,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:08,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:08,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:49:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:08,271 INFO L87 Difference]: Start difference. First operand 238 states and 315 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:08,419 INFO L93 Difference]: Finished difference Result 232 states and 305 transitions. [2023-11-19 04:49:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 04:49:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:08,423 INFO L225 Difference]: With dead ends: 232 [2023-11-19 04:49:08,423 INFO L226 Difference]: Without dead ends: 232 [2023-11-19 04:49:08,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:08,425 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 7 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:08,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 839 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:08,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-19 04:49:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2023-11-19 04:49:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 205 states have (on average 1.2829268292682927) internal successors, (263), 222 states have internal predecessors, (263), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:49:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 305 transitions. [2023-11-19 04:49:08,445 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 305 transitions. Word has length 67 [2023-11-19 04:49:08,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:08,446 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 305 transitions. [2023-11-19 04:49:08,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 305 transitions. [2023-11-19 04:49:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:49:08,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:08,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:08,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:08,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:08,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:49:08,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1530556939, now seen corresponding path program 1 times [2023-11-19 04:49:08,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:08,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398425649] [2023-11-19 04:49:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:08,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:08,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:08,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:08,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 04:49:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:09,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:09,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:09,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:09,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:49:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398425649] [2023-11-19 04:49:09,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398425649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:09,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:09,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:49:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551827819] [2023-11-19 04:49:09,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:09,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:49:09,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:09,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:09,823 INFO L87 Difference]: Start difference. First operand 232 states and 305 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:11,167 INFO L93 Difference]: Finished difference Result 341 states and 436 transitions. [2023-11-19 04:49:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:11,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 04:49:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:11,172 INFO L225 Difference]: With dead ends: 341 [2023-11-19 04:49:11,172 INFO L226 Difference]: Without dead ends: 341 [2023-11-19 04:49:11,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:11,173 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 96 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:11,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 622 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 04:49:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-19 04:49:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 336. [2023-11-19 04:49:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 308 states have (on average 1.2597402597402598) internal successors, (388), 325 states have internal predecessors, (388), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 04:49:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 432 transitions. [2023-11-19 04:49:11,192 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 432 transitions. Word has length 67 [2023-11-19 04:49:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:11,193 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 432 transitions. [2023-11-19 04:49:11,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:49:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 432 transitions. [2023-11-19 04:49:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 04:49:11,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:11,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:11,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:11,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:11,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:49:11,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1761621234, now seen corresponding path program 1 times [2023-11-19 04:49:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817220283] [2023-11-19 04:49:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:11,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:11,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 04:49:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:12,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:12,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:12,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:12,245 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:49:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817220283] [2023-11-19 04:49:12,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817220283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:12,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:12,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:49:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860794309] [2023-11-19 04:49:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:12,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:49:12,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:49:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:49:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:49:12,248 INFO L87 Difference]: Start difference. First operand 336 states and 432 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:49:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:12,339 INFO L93 Difference]: Finished difference Result 339 states and 436 transitions. [2023-11-19 04:49:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:12,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2023-11-19 04:49:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:12,345 INFO L225 Difference]: With dead ends: 339 [2023-11-19 04:49:12,345 INFO L226 Difference]: Without dead ends: 339 [2023-11-19 04:49:12,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:49:12,348 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 2 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:12,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 896 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:12,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-19 04:49:12,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2023-11-19 04:49:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 310 states have (on average 1.261290322580645) internal successors, (391), 328 states have internal predecessors, (391), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-19 04:49:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 436 transitions. [2023-11-19 04:49:12,377 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 436 transitions. Word has length 82 [2023-11-19 04:49:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:12,378 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 436 transitions. [2023-11-19 04:49:12,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:49:12,379 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 436 transitions. [2023-11-19 04:49:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 04:49:12,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:12,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:12,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:12,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:49:12,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1421786640, now seen corresponding path program 1 times [2023-11-19 04:49:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:12,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520525893] [2023-11-19 04:49:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:12,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:12,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:12,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:12,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 04:49:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:13,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:13,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:49:13,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:13,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:49:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520525893] [2023-11-19 04:49:13,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520525893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:13,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [97964779] [2023-11-19 04:49:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:13,562 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:49:13,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:49:13,567 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:49:13,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-19 04:49:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:14,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:14,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:49:14,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [97964779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998086296] [2023-11-19 04:49:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:14,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:14,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:49:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:15,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:15,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:15,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998086296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:15,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:49:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-19 04:49:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917799039] [2023-11-19 04:49:15,738 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:15,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:49:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:49:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:49:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:49:15,742 INFO L87 Difference]: Start difference. First operand 339 states and 436 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:49:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:16,411 INFO L93 Difference]: Finished difference Result 354 states and 458 transitions. [2023-11-19 04:49:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:49:16,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2023-11-19 04:49:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:16,418 INFO L225 Difference]: With dead ends: 354 [2023-11-19 04:49:16,418 INFO L226 Difference]: Without dead ends: 354 [2023-11-19 04:49:16,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:49:16,420 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 18 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:16,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2072 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:49:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-19 04:49:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 350. [2023-11-19 04:49:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 320 states have (on average 1.278125) internal successors, (409), 338 states have internal predecessors, (409), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-19 04:49:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 454 transitions. [2023-11-19 04:49:16,450 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 454 transitions. Word has length 84 [2023-11-19 04:49:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:16,451 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 454 transitions. [2023-11-19 04:49:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:49:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 454 transitions. [2023-11-19 04:49:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 04:49:16,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:16,459 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, 1, 1, 1, 1, 1] [2023-11-19 04:49:16,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 04:49:16,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:16,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:49:17,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:49:17,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1843045618, now seen corresponding path program 2 times [2023-11-19 04:49:17,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:49:17,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035325397] [2023-11-19 04:49:17,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:49:17,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:49:17,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:49:17,089 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:49:17,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 04:49:18,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:49:18,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:49:18,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:49:18,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:49:18,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:49:19,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:49:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035325397] [2023-11-19 04:49:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035325397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380791311] [2023-11-19 04:49:19,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:49:19,180 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:49:19,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:49:19,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:49:19,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-19 04:49:25,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:49:25,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:49:25,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:49:25,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:49:25,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:49:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380791311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889303430] [2023-11-19 04:49:26,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:49:26,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:26,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:26,107 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:26,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8480eb0-3492-4fb5-8b98-f13a5bfdeeeb/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process