./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:46,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:46,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:21:46,627 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:46,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:46,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:46,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:46,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:46,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:46,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:46,688 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:46,689 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:46,690 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:46,691 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:21:46,692 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:46,692 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:46,693 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:21:46,694 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:21:46,695 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:46,695 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:21:46,696 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:21:46,696 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:21:46,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:21:46,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:21:46,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:46,699 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:21:46,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:46,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:21:46,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:46,700 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:21:46,702 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:21:46,702 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:21:46,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:46,703 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:21:46,703 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:21:46,703 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:21:46,704 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:46,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:46,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:46,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:46,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:46,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:46,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:46,706 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:21:46,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:21:46,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:46,707 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:46,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:46,707 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_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c [2023-11-23 21:21:47,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:47,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:47,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:47,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:47,051 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:47,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2023-11-23 21:21:50,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:50,598 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:50,598 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2023-11-23 21:21:50,632 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data/198557234/bab958e45f2f45b7b827020e797e270d/FLAG28d3b4278 [2023-11-23 21:21:50,651 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data/198557234/bab958e45f2f45b7b827020e797e270d [2023-11-23 21:21:50,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:50,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:50,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:50,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:50,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:50,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:50" (1/1) ... [2023-11-23 21:21:50,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6308584b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:50, skipping insertion in model container [2023-11-23 21:21:50,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:50" (1/1) ... [2023-11-23 21:21:50,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:51,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:51,862 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 21:21:51,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54f1c23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:51, skipping insertion in model container [2023-11-23 21:21:51,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:51,887 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:21:51,904 INFO L158 Benchmark]: Toolchain (without parser) took 1229.64ms. Allocated memory is still 159.4MB. Free memory was 121.2MB in the beginning and 128.3MB in the end (delta: -7.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-23 21:21:51,904 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:21:51,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1223.04ms. Allocated memory is still 159.4MB. Free memory was 120.7MB in the beginning and 128.3MB in the end (delta: -7.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-23 21:21:51,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1223.04ms. Allocated memory is still 159.4MB. Free memory was 120.7MB in the beginning and 128.3MB in the end (delta: -7.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:54,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:54,906 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:21:54,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:54,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:54,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:54,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:54,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:54,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:54,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:54,967 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:54,968 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:54,968 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:54,973 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:54,974 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:54,975 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:54,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:21:54,976 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:21:54,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:54,979 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:21:54,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:54,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:21:54,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:54,981 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:21:54,981 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:21:54,982 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:21:54,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:54,983 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:21:54,983 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:21:54,983 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:21:54,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:21:54,985 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:21:54,986 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:54,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:54,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:21:54,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:54,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:54,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:54,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:54,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:54,989 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:21:54,989 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:21:54,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:54,990 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:54,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:54,991 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_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50ec0e1b32f61b9ee697cf2c7598d178ee7b7b08e68108a0f594c4a6a80ab80c [2023-11-23 21:21:55,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:55,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:55,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:55,481 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:55,483 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:55,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2023-11-23 21:21:59,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:59,542 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:59,542 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-2.i [2023-11-23 21:21:59,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data/53cd7d55d/0ec913267b5d4149bb7314f51f0dcbd9/FLAGbbc40ca11 [2023-11-23 21:21:59,605 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/data/53cd7d55d/0ec913267b5d4149bb7314f51f0dcbd9 [2023-11-23 21:21:59,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:59,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:59,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:59,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:59,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:59,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:59" (1/1) ... [2023-11-23 21:21:59,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a67ac1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:59, skipping insertion in model container [2023-11-23 21:21:59,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:59" (1/1) ... [2023-11-23 21:21:59,771 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:00,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:00,904 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:22:00,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:01,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:01,127 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:01,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:01,344 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:22:01,353 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:01,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01 WrapperNode [2023-11-23 21:22:01,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:01,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:01,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:01,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:01,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,595 INFO L138 Inliner]: procedures = 180, calls = 783, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3040 [2023-11-23 21:22:01,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:01,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:01,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:01,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:01,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:01,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:01,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:01,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:01,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (1/1) ... [2023-11-23 21:22:01,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:01,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:01,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:01,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:22:01,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:22:01,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:22:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:22:01,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:22:01,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:22:01,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:22:01,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:22:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:22:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:22:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:22:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:22:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:22:01,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:22:01,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:22:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:22:01,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:01,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:02,146 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:02,149 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:02,198 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 21:22:10,168 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:10,425 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:10,425 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-23 21:22:10,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:10 BoogieIcfgContainer [2023-11-23 21:22:10,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:10,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:10,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:10,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:10,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:59" (1/3) ... [2023-11-23 21:22:10,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4d90b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:10, skipping insertion in model container [2023-11-23 21:22:10,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:01" (2/3) ... [2023-11-23 21:22:10,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4d90b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:10, skipping insertion in model container [2023-11-23 21:22:10,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:10" (3/3) ... [2023-11-23 21:22:10,437 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test9-2.i [2023-11-23 21:22:10,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:10,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 535 error locations. [2023-11-23 21:22:10,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:10,565 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;@6c0db8e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:10,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 535 error locations. [2023-11-23 21:22:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 1974 states, 933 states have (on average 2.2411575562700965) internal successors, (2091), 1967 states have internal predecessors, (2091), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-23 21:22:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:22:10,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:10,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:22:10,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-23 21:22:10,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:10,608 INFO L85 PathProgramCache]: Analyzing trace with hash 177931, now seen corresponding path program 1 times [2023-11-23 21:22:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:10,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402323409] [2023-11-23 21:22:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:10,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:10,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:10,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:10,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:22:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:10,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:22:10,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:10,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-23 21:22:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:10,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:10,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402323409] [2023-11-23 21:22:10,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402323409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:10,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:22:10,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324880712] [2023-11-23 21:22:10,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:10,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:11,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:11,036 INFO L87 Difference]: Start difference. First operand has 1974 states, 933 states have (on average 2.2411575562700965) internal successors, (2091), 1967 states have internal predecessors, (2091), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:15,257 INFO L93 Difference]: Finished difference Result 2126 states and 3192 transitions. [2023-11-23 21:22:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:15,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-23 21:22:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:15,330 INFO L225 Difference]: With dead ends: 2126 [2023-11-23 21:22:15,330 INFO L226 Difference]: Without dead ends: 2125 [2023-11-23 21:22:15,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:15,337 INFO L413 NwaCegarLoop]: 2526 mSDtfsCounter, 1896 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:15,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2399 Valid, 2654 Invalid, 1164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-23 21:22:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2023-11-23 21:22:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1960. [2023-11-23 21:22:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 936 states have (on average 2.1474358974358974) internal successors, (2010), 1953 states have internal predecessors, (2010), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-23 21:22:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 3018 transitions. [2023-11-23 21:22:15,987 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 3018 transitions. Word has length 2 [2023-11-23 21:22:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:15,987 INFO L495 AbstractCegarLoop]: Abstraction has 1960 states and 3018 transitions. [2023-11-23 21:22:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 3018 transitions. [2023-11-23 21:22:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:22:15,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:15,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:22:15,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:16,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:16,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-23 21:22:16,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash 177932, now seen corresponding path program 1 times [2023-11-23 21:22:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029831176] [2023-11-23 21:22:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:16,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:16,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:16,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:16,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:22:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:16,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:22:16,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:16,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-23 21:22:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:16,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:16,400 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029831176] [2023-11-23 21:22:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029831176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:16,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:16,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:22:16,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597250893] [2023-11-23 21:22:16,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:16,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:16,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:16,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:16,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:16,405 INFO L87 Difference]: Start difference. First operand 1960 states and 3018 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:21,996 INFO L93 Difference]: Finished difference Result 3331 states and 5422 transitions. [2023-11-23 21:22:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:21,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-23 21:22:21,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:22,026 INFO L225 Difference]: With dead ends: 3331 [2023-11-23 21:22:22,027 INFO L226 Difference]: Without dead ends: 3331 [2023-11-23 21:22:22,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:22,029 INFO L413 NwaCegarLoop]: 2840 mSDtfsCounter, 1403 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 4824 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:22,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1903 Valid, 4824 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-23 21:22:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2023-11-23 21:22:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3062. [2023-11-23 21:22:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 1539 states have (on average 2.0909681611436) internal successors, (3218), 3055 states have internal predecessors, (3218), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-11-23 21:22:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 5226 transitions. [2023-11-23 21:22:22,429 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 5226 transitions. Word has length 2 [2023-11-23 21:22:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:22,429 INFO L495 AbstractCegarLoop]: Abstraction has 3062 states and 5226 transitions. [2023-11-23 21:22:22,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 5226 transitions. [2023-11-23 21:22:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:22:22,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:22,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:22:22,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:22,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:22,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-23 21:22:22,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1114172565, now seen corresponding path program 1 times [2023-11-23 21:22:22,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:22,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585181143] [2023-11-23 21:22:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:22,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:22,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:22,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:22,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:22:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:22,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:22:22,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:22,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-23 21:22:22,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-23 21:22:22,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:22:22,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:22:22,956 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:22:22,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:22:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:22,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:22,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:22,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585181143] [2023-11-23 21:22:22,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585181143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:22,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:22,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124148167] [2023-11-23 21:22:22,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:22,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:22,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:22,991 INFO L87 Difference]: Start difference. First operand 3062 states and 5226 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:30,434 INFO L93 Difference]: Finished difference Result 3216 states and 5388 transitions. [2023-11-23 21:22:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:22:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:22:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:30,465 INFO L225 Difference]: With dead ends: 3216 [2023-11-23 21:22:30,466 INFO L226 Difference]: Without dead ends: 3216 [2023-11-23 21:22:30,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:30,468 INFO L413 NwaCegarLoop]: 2263 mSDtfsCounter, 4025 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4528 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 1987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:30,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4528 Valid, 2324 Invalid, 1987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-11-23 21:22:30,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-11-23 21:22:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 1949. [2023-11-23 21:22:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 936 states have (on average 2.1346153846153846) internal successors, (1998), 1942 states have internal predecessors, (1998), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-23 21:22:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3006 transitions. [2023-11-23 21:22:30,917 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3006 transitions. Word has length 6 [2023-11-23 21:22:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:30,917 INFO L495 AbstractCegarLoop]: Abstraction has 1949 states and 3006 transitions. [2023-11-23 21:22:30,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:22:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3006 transitions. [2023-11-23 21:22:30,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:22:30,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:30,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:30,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:31,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:31,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-23 21:22:31,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash 179611130, now seen corresponding path program 1 times [2023-11-23 21:22:31,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:31,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533995325] [2023-11-23 21:22:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:31,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:31,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:31,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:22:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:31,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:22:31,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:31,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2023-11-23 21:22:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:31,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:31,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533995325] [2023-11-23 21:22:31,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533995325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:31,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:31,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:31,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748128423] [2023-11-23 21:22:31,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:31,325 INFO L87 Difference]: Start difference. First operand 1949 states and 3006 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-23 21:22:35,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:35,148 INFO L93 Difference]: Finished difference Result 3092 states and 5171 transitions. [2023-11-23 21:22:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-11-23 21:22:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:35,178 INFO L225 Difference]: With dead ends: 3092 [2023-11-23 21:22:35,178 INFO L226 Difference]: Without dead ends: 3092 [2023-11-23 21:22:35,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:35,180 INFO L413 NwaCegarLoop]: 4628 mSDtfsCounter, 1722 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 6849 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:35,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 6849 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 21:22:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2023-11-23 21:22:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 1902. [2023-11-23 21:22:35,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 936 states have (on average 2.0844017094017095) internal successors, (1951), 1895 states have internal predecessors, (1951), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-11-23 21:22:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2959 transitions. [2023-11-23 21:22:35,479 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2959 transitions. Word has length 7 [2023-11-23 21:22:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:35,480 INFO L495 AbstractCegarLoop]: Abstraction has 1902 states and 2959 transitions. [2023-11-23 21:22:35,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-23 21:22:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2959 transitions. [2023-11-23 21:22:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:22:35,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:35,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:35,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:35,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:35,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-23 21:22:35,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash 179611131, now seen corresponding path program 1 times [2023-11-23 21:22:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626924582] [2023-11-23 21:22:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:35,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:22:35,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:35,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:22:35,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bce8956d-2881-4d78-bf93-52ff1ae6039a/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:22:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:35,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:22:35,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:35,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-23 21:22:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:35,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:35,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:35,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626924582] [2023-11-23 21:22:35,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626924582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:35,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:35,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771159167] [2023-11-23 21:22:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:35,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:35,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:35,912 INFO L87 Difference]: Start difference. First operand 1902 states and 2959 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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)