./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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-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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:01:05,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:01:05,996 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:01:06,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:01:06,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:01:06,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:01:06,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:01:06,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:01:06,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:01:06,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:01:06,057 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:01:06,057 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:01:06,058 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:01:06,060 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:01:06,060 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:01:06,061 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:01:06,061 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:01:06,062 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:01:06,063 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:01:06,063 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:01:06,064 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:01:06,064 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:01:06,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:01:06,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:01:06,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:01:06,068 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:01:06,068 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:01:06,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:01:06,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:01:06,070 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:01:06,071 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:01:06,072 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:01:06,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:01:06,072 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:01:06,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:01:06,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:01:06,073 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:01:06,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:01:06,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:01:06,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:06,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:01:06,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:01:06,075 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:01:06,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:01:06,076 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:01:06,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:01:06,076 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_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2023-11-19 05:01:06,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:01:06,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:01:06,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:01:06,508 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:01:06,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:01:06,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2023-11-19 05:01:09,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:01:10,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:01:10,226 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2023-11-19 05:01:10,246 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data/6f5b61a5e/55607591ca3c432e9bca24d15c4b785c/FLAGc4db773d6 [2023-11-19 05:01:10,262 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data/6f5b61a5e/55607591ca3c432e9bca24d15c4b785c [2023-11-19 05:01:10,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:01:10,266 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:01:10,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:10,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:01:10,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:01:10,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:10" (1/1) ... [2023-11-19 05:01:10,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ab25d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:10, skipping insertion in model container [2023-11-19 05:01:10,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:10" (1/1) ... [2023-11-19 05:01:10,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:01:11,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:11,050 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 05:01:11,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71ab0db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:11, skipping insertion in model container [2023-11-19 05:01:11,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:11,052 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:01:11,054 INFO L158 Benchmark]: Toolchain (without parser) took 786.86ms. Allocated memory is still 121.6MB. Free memory was 74.7MB in the beginning and 53.9MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:01:11,055 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 94.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:01:11,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 783.92ms. Allocated memory is still 121.6MB. Free memory was 74.4MB in the beginning and 53.9MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:01:11,058 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 94.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 783.92ms. Allocated memory is still 121.6MB. Free memory was 74.4MB in the beginning and 53.9MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. 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_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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-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 b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:01:13,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:01:13,573 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 05:01:13,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:01:13,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:01:13,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:01:13,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:01:13,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:01:13,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:01:13,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:01:13,646 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:01:13,647 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:01:13,647 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:01:13,649 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:01:13,649 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:01:13,650 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:01:13,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:01:13,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:01:13,652 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:01:13,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:01:13,653 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:01:13,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:01:13,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:01:13,654 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:01:13,655 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:01:13,655 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:01:13,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:01:13,656 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:01:13,656 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:01:13,657 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:01:13,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:01:13,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:01:13,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:01:13,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:01:13,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:01:13,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:01:13,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:13,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:01:13,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:01:13,661 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:01:13,662 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:01:13,662 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:01:13,662 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:01:13,662 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_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fb715e20e93734f29581bef128b7f826b4b5933b157899cd0cb0d668434a9d [2023-11-19 05:01:14,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:01:14,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:01:14,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:01:14,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:01:14,147 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:01:14,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2023-11-19 05:01:17,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:01:17,876 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:01:17,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-2.i [2023-11-19 05:01:17,897 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data/1301c3ba3/1be7510d90db4e77b2163b9c67226049/FLAG2c3426ac1 [2023-11-19 05:01:17,913 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/data/1301c3ba3/1be7510d90db4e77b2163b9c67226049 [2023-11-19 05:01:17,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:01:17,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:01:17,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:17,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:01:17,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:01:17,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:17" (1/1) ... [2023-11-19 05:01:17,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cef6ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:17, skipping insertion in model container [2023-11-19 05:01:17,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:17" (1/1) ... [2023-11-19 05:01:18,001 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:01:18,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:18,739 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:01:18,766 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:01:18,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:18,859 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:01:18,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:19,026 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:19,035 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:01:19,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19 WrapperNode [2023-11-19 05:01:19,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:19,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:01:19,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:01:19,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:01:19,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,186 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-19 05:01:19,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:01:19,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:01:19,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:01:19,187 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:01:19,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,201 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:01:19,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:01:19,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:01:19,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:01:19,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (1/1) ... [2023-11-19 05:01:19,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:19,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:19,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:01:19,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:01:19,506 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:01:19,506 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:01:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:01:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:01:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:01:19,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:01:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:01:19,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:01:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-19 05:01:19,509 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-19 05:01:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:01:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:01:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:01:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:01:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:01:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:01:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:01:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:01:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:01:19,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:01:19,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:01:19,808 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:01:19,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:01:19,848 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:01:25,960 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:01:25,978 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:01:25,978 INFO L302 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-19 05:01:25,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:25 BoogieIcfgContainer [2023-11-19 05:01:25,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:01:25,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:01:25,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:01:25,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:01:25,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:01:17" (1/3) ... [2023-11-19 05:01:25,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56987bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:25, skipping insertion in model container [2023-11-19 05:01:25,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:19" (2/3) ... [2023-11-19 05:01:25,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56987bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:25, skipping insertion in model container [2023-11-19 05:01:25,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:25" (3/3) ... [2023-11-19 05:01:25,999 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-2.i [2023-11-19 05:01:26,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:01:26,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 640 error locations. [2023-11-19 05:01:26,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:01:26,112 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;@332c76a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:01:26,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 640 error locations. [2023-11-19 05:01:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 1309 states, 645 states have (on average 2.2310077519379843) internal successors, (1439), 1299 states have internal predecessors, (1439), 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 05:01:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:01:26,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:26,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:01:26,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:26,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash 141073, now seen corresponding path program 1 times [2023-11-19 05:01:26,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:26,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919771539] [2023-11-19 05:01:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:26,151 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 05:01:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:26,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:26,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:26,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:01:26,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:26,510 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 [2023-11-19 05:01:26,526 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 05:01:26,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:26,527 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919771539] [2023-11-19 05:01:26,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919771539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:26,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:26,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:01:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017674223] [2023-11-19 05:01:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:26,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:26,588 INFO L87 Difference]: Start difference. First operand has 1309 states, 645 states have (on average 2.2310077519379843) internal successors, (1439), 1299 states have internal predecessors, (1439), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 05:01:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:29,599 INFO L93 Difference]: Finished difference Result 1493 states and 1599 transitions. [2023-11-19 05:01:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:29,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-19 05:01:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:29,623 INFO L225 Difference]: With dead ends: 1493 [2023-11-19 05:01:29,624 INFO L226 Difference]: Without dead ends: 1491 [2023-11-19 05:01:29,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:01:29,629 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 1170 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1068 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 05:01:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2023-11-19 05:01:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1299. [2023-11-19 05:01:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 650 states have (on average 2.0876923076923077) internal successors, (1357), 1288 states have internal predecessors, (1357), 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 05:01:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1401 transitions. [2023-11-19 05:01:29,748 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1401 transitions. Word has length 3 [2023-11-19 05:01:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:29,748 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1401 transitions. [2023-11-19 05:01:29,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 05:01:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1401 transitions. [2023-11-19 05:01:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:01:29,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:29,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:01:29,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Ended with exit code 0 [2023-11-19 05:01:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:29,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:29,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 141074, now seen corresponding path program 1 times [2023-11-19 05:01:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707743674] [2023-11-19 05:01:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:29,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:01:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:29,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:29,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:30,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:30,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:30,119 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 [2023-11-19 05:01:30,132 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 05:01:30,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:30,133 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:30,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707743674] [2023-11-19 05:01:30,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707743674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:30,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:30,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:01:30,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558704184] [2023-11-19 05:01:30,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:30,143 INFO L87 Difference]: Start difference. First operand 1299 states and 1401 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 05:01:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:34,590 INFO L93 Difference]: Finished difference Result 1897 states and 2041 transitions. [2023-11-19 05:01:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-19 05:01:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:34,602 INFO L225 Difference]: With dead ends: 1897 [2023-11-19 05:01:34,602 INFO L226 Difference]: Without dead ends: 1897 [2023-11-19 05:01:34,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:01:34,604 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 637 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:34,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1860 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-19 05:01:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2023-11-19 05:01:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1508. [2023-11-19 05:01:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 859 states have (on average 2.0733410942956927) internal successors, (1781), 1496 states have internal predecessors, (1781), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 05:01:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1827 transitions. [2023-11-19 05:01:34,660 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1827 transitions. Word has length 3 [2023-11-19 05:01:34,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:34,660 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 1827 transitions. [2023-11-19 05:01:34,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 05:01:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1827 transitions. [2023-11-19 05:01:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:01:34,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:34,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:34,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:34,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:34,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:34,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:34,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1437667611, now seen corresponding path program 1 times [2023-11-19 05:01:34,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:34,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104326422] [2023-11-19 05:01:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:34,866 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 05:01:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:34,868 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:34,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:35,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:01:35,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:35,076 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 [2023-11-19 05:01:35,087 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 [2023-11-19 05:01:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:01:35,218 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 [2023-11-19 05:01:35,246 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 05:01:35,246 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 [2023-11-19 05:01:35,275 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 05:01:35,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:35,276 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:35,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104326422] [2023-11-19 05:01:35,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104326422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:35,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:35,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:35,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257188415] [2023-11-19 05:01:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:35,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:35,282 INFO L87 Difference]: Start difference. First operand 1508 states and 1827 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 05:01:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:40,037 INFO L93 Difference]: Finished difference Result 1694 states and 2020 transitions. [2023-11-19 05:01:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:01:40,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 05:01:40,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:40,050 INFO L225 Difference]: With dead ends: 1694 [2023-11-19 05:01:40,050 INFO L226 Difference]: Without dead ends: 1694 [2023-11-19 05:01:40,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:40,055 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1481 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:40,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 739 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 05:01:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2023-11-19 05:01:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1288. [2023-11-19 05:01:40,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 650 states have (on average 2.0692307692307694) internal successors, (1345), 1277 states have internal predecessors, (1345), 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 05:01:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1389 transitions. [2023-11-19 05:01:40,109 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1389 transitions. Word has length 7 [2023-11-19 05:01:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:40,109 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1389 transitions. [2023-11-19 05:01:40,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 05:01:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1389 transitions. [2023-11-19 05:01:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:01:40,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:40,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:40,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:40,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:40,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:40,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1618023058, now seen corresponding path program 1 times [2023-11-19 05:01:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:40,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703226524] [2023-11-19 05:01:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:40,320 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 05:01:40,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:40,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:40,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:40,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:01:40,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:40,521 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 [2023-11-19 05:01:40,541 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 05:01:40,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:40,541 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703226524] [2023-11-19 05:01:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703226524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:40,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:40,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:01:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726649507] [2023-11-19 05:01:40,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:40,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:40,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:40,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:40,544 INFO L87 Difference]: Start difference. First operand 1288 states and 1389 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:43,239 INFO L93 Difference]: Finished difference Result 1619 states and 1748 transitions. [2023-11-19 05:01:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:43,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:01:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:43,250 INFO L225 Difference]: With dead ends: 1619 [2023-11-19 05:01:43,250 INFO L226 Difference]: Without dead ends: 1619 [2023-11-19 05:01:43,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 05:01:43,252 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 994 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:43,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1638 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:01:43,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2023-11-19 05:01:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1241. [2023-11-19 05:01:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 650 states have (on average 1.9953846153846153) internal successors, (1297), 1230 states have internal predecessors, (1297), 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 05:01:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1341 transitions. [2023-11-19 05:01:43,307 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1341 transitions. Word has length 8 [2023-11-19 05:01:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:43,308 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 1341 transitions. [2023-11-19 05:01:43,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1341 transitions. [2023-11-19 05:01:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:01:43,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:43,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:43,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Ended with exit code 0 [2023-11-19 05:01:43,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:43,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:43,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1618023059, now seen corresponding path program 1 times [2023-11-19 05:01:43,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:43,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526095047] [2023-11-19 05:01:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:43,513 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 05:01:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:43,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:43,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:43,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:43,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:43,686 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 [2023-11-19 05:01:43,727 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 05:01:43,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:43,733 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:43,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526095047] [2023-11-19 05:01:43,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526095047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:43,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:43,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:01:43,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001836776] [2023-11-19 05:01:43,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:43,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:43,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:43,743 INFO L87 Difference]: Start difference. First operand 1241 states and 1341 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:48,010 INFO L93 Difference]: Finished difference Result 1715 states and 1850 transitions. [2023-11-19 05:01:48,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:48,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:01:48,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:48,023 INFO L225 Difference]: With dead ends: 1715 [2023-11-19 05:01:48,024 INFO L226 Difference]: Without dead ends: 1715 [2023-11-19 05:01:48,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 05:01:48,025 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 692 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:48,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 2035 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-19 05:01:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2023-11-19 05:01:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1491. [2023-11-19 05:01:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 908 states have (on average 1.9812775330396475) internal successors, (1799), 1478 states have internal predecessors, (1799), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 05:01:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1847 transitions. [2023-11-19 05:01:48,078 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1847 transitions. Word has length 8 [2023-11-19 05:01:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:48,078 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 1847 transitions. [2023-11-19 05:01:48,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:01:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1847 transitions. [2023-11-19 05:01:48,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:01:48,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:48,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:48,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:48,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr533REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:48,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash -364322708, now seen corresponding path program 1 times [2023-11-19 05:01:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615509633] [2023-11-19 05:01:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:48,284 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 05:01:48,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:48,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:48,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:48,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:01:48,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:48,590 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 05:01:48,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:48,591 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:48,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615509633] [2023-11-19 05:01:48,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615509633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:48,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:48,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:48,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338455047] [2023-11-19 05:01:48,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:48,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:48,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:48,594 INFO L87 Difference]: Start difference. First operand 1491 states and 1847 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 05:01:49,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:49,119 INFO L93 Difference]: Finished difference Result 2318 states and 2893 transitions. [2023-11-19 05:01:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:49,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-11-19 05:01:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:49,139 INFO L225 Difference]: With dead ends: 2318 [2023-11-19 05:01:49,139 INFO L226 Difference]: Without dead ends: 2318 [2023-11-19 05:01:49,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 05:01:49,141 INFO L413 NwaCegarLoop]: 1455 mSDtfsCounter, 754 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:49,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2586 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:01:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2023-11-19 05:01:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1900. [2023-11-19 05:01:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1315 states have (on average 1.9650190114068442) internal successors, (2584), 1885 states have internal predecessors, (2584), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 05:01:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2636 transitions. [2023-11-19 05:01:49,201 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2636 transitions. Word has length 11 [2023-11-19 05:01:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:49,201 INFO L495 AbstractCegarLoop]: Abstraction has 1900 states and 2636 transitions. [2023-11-19 05:01:49,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 05:01:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2636 transitions. [2023-11-19 05:01:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:01:49,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:49,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:49,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Ended with exit code 0 [2023-11-19 05:01:49,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:49,417 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr344REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:49,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1480660580, now seen corresponding path program 1 times [2023-11-19 05:01:49,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:49,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621350332] [2023-11-19 05:01:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:49,419 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 05:01:49,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:49,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:49,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:49,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:01:49,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:49,606 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 05:01:49,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:49,607 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:49,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621350332] [2023-11-19 05:01:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621350332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:49,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:49,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:49,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473588932] [2023-11-19 05:01:49,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:49,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:49,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:49,610 INFO L87 Difference]: Start difference. First operand 1900 states and 2636 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 05:01:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:49,662 INFO L93 Difference]: Finished difference Result 1804 states and 2464 transitions. [2023-11-19 05:01:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:49,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2023-11-19 05:01:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:49,675 INFO L225 Difference]: With dead ends: 1804 [2023-11-19 05:01:49,675 INFO L226 Difference]: Without dead ends: 1804 [2023-11-19 05:01:49,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 05:01:49,677 INFO L413 NwaCegarLoop]: 1260 mSDtfsCounter, 81 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:49,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2448 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:01:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-11-19 05:01:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1804. [2023-11-19 05:01:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1243 states have (on average 1.9404666130329846) internal successors, (2412), 1789 states have internal predecessors, (2412), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 05:01:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2464 transitions. [2023-11-19 05:01:49,730 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2464 transitions. Word has length 13 [2023-11-19 05:01:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:49,731 INFO L495 AbstractCegarLoop]: Abstraction has 1804 states and 2464 transitions. [2023-11-19 05:01:49,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 05:01:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2464 transitions. [2023-11-19 05:01:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:01:49,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:49,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:49,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:49,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:49,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr638ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:49,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -147957479, now seen corresponding path program 1 times [2023-11-19 05:01:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:49,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104339511] [2023-11-19 05:01:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:49,937 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 05:01:49,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:49,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:49,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Waiting until timeout for monitored process [2023-11-19 05:01:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:50,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:50,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:50,185 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:01:50,186 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:01:50,187 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:01:50,192 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 05:01:50,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:01:50,258 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 05:01:50,275 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 05:01:50,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:50,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:50,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104339511] [2023-11-19 05:01:50,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104339511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:50,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:50,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:01:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586979327] [2023-11-19 05:01:50,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:50,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:50,278 INFO L87 Difference]: Start difference. First operand 1804 states and 2464 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 05:01:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:52,365 INFO L93 Difference]: Finished difference Result 2456 states and 3378 transitions. [2023-11-19 05:01:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:01:52,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-11-19 05:01:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:52,380 INFO L225 Difference]: With dead ends: 2456 [2023-11-19 05:01:52,381 INFO L226 Difference]: Without dead ends: 2456 [2023-11-19 05:01:52,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 05:01:52,382 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 466 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:52,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 3570 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 05:01:52,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2023-11-19 05:01:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 1803. [2023-11-19 05:01:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1242 states have (on average 1.9404186795491143) internal successors, (2410), 1788 states have internal predecessors, (2410), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 05:01:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2462 transitions. [2023-11-19 05:01:52,438 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2462 transitions. Word has length 14 [2023-11-19 05:01:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:52,438 INFO L495 AbstractCegarLoop]: Abstraction has 1803 states and 2462 transitions. [2023-11-19 05:01:52,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 05:01:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2462 transitions. [2023-11-19 05:01:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:01:52,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:52,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:52,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:52,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:52,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:52,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:52,650 INFO L85 PathProgramCache]: Analyzing trace with hash -237495490, now seen corresponding path program 1 times [2023-11-19 05:01:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:52,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133686897] [2023-11-19 05:01:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:52,651 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 05:01:52,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:52,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:52,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 (10)] Waiting until timeout for monitored process [2023-11-19 05:01:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:52,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:01:52,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:52,868 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 05:01:52,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:52,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133686897] [2023-11-19 05:01:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133686897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:52,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401084365] [2023-11-19 05:01:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:52,872 INFO L87 Difference]: Start difference. First operand 1803 states and 2462 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 05:01:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:52,915 INFO L93 Difference]: Finished difference Result 1743 states and 2376 transitions. [2023-11-19 05:01:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:52,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-19 05:01:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:52,925 INFO L225 Difference]: With dead ends: 1743 [2023-11-19 05:01:52,925 INFO L226 Difference]: Without dead ends: 1743 [2023-11-19 05:01:52,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 05:01:52,926 INFO L413 NwaCegarLoop]: 1217 mSDtfsCounter, 81 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:52,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2362 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:01:52,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2023-11-19 05:01:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1743. [2023-11-19 05:01:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1206 states have (on average 1.9270315091210615) internal successors, (2324), 1728 states have internal predecessors, (2324), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 05:01:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2376 transitions. [2023-11-19 05:01:52,972 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2376 transitions. Word has length 18 [2023-11-19 05:01:52,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:52,972 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 2376 transitions. [2023-11-19 05:01:52,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 05:01:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2376 transitions. [2023-11-19 05:01:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:01:52,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:52,973 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] [2023-11-19 05:01:52,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:53,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:53,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:53,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash -599899528, now seen corresponding path program 1 times [2023-11-19 05:01:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724478968] [2023-11-19 05:01:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:53,179 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 05:01:53,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:53,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:53,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:53,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:01:53,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:53,443 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 05:01:53,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:53,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724478968] [2023-11-19 05:01:53,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724478968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:53,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:53,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:01:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285206570] [2023-11-19 05:01:53,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:53,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:53,446 INFO L87 Difference]: Start difference. First operand 1743 states and 2376 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 05:01:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:53,562 INFO L93 Difference]: Finished difference Result 1715 states and 2320 transitions. [2023-11-19 05:01:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:01:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-19 05:01:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:53,573 INFO L225 Difference]: With dead ends: 1715 [2023-11-19 05:01:53,573 INFO L226 Difference]: Without dead ends: 1715 [2023-11-19 05:01:53,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 05:01:53,574 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 62 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:53,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3482 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:01:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2023-11-19 05:01:53,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1713. [2023-11-19 05:01:53,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1190 states have (on average 1.9042016806722688) internal successors, (2266), 1698 states have internal predecessors, (2266), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 05:01:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2318 transitions. [2023-11-19 05:01:53,616 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2318 transitions. Word has length 20 [2023-11-19 05:01:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:53,617 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2318 transitions. [2023-11-19 05:01:53,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 05:01:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2318 transitions. [2023-11-19 05:01:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:01:53,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:53,619 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] [2023-11-19 05:01:53,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:53,823 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:53,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash 453907206, now seen corresponding path program 1 times [2023-11-19 05:01:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164160983] [2023-11-19 05:01:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:53,825 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 05:01:53,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:53,827 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:53,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 (12)] Waiting until timeout for monitored process [2023-11-19 05:01:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:54,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:54,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:54,109 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 [2023-11-19 05:01:54,229 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 05:01:54,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:54,229 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:54,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164160983] [2023-11-19 05:01:54,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164160983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:54,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:54,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:54,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978538540] [2023-11-19 05:01:54,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:54,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:54,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:54,232 INFO L87 Difference]: Start difference. First operand 1713 states and 2318 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 05:01:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:57,487 INFO L93 Difference]: Finished difference Result 1723 states and 2326 transitions. [2023-11-19 05:01:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:01:57,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-11-19 05:01:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:57,499 INFO L225 Difference]: With dead ends: 1723 [2023-11-19 05:01:57,499 INFO L226 Difference]: Without dead ends: 1723 [2023-11-19 05:01:57,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 05:01:57,500 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 876 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:57,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1549 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-19 05:01:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-11-19 05:01:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1709. [2023-11-19 05:01:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1190 states have (on average 1.8974789915966386) internal successors, (2258), 1694 states have internal predecessors, (2258), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 05:01:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2310 transitions. [2023-11-19 05:01:57,551 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2310 transitions. Word has length 34 [2023-11-19 05:01:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:57,552 INFO L495 AbstractCegarLoop]: Abstraction has 1709 states and 2310 transitions. [2023-11-19 05:01:57,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 05:01:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2310 transitions. [2023-11-19 05:01:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:01:57,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:57,554 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] [2023-11-19 05:01:57,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:57,759 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-19 05:01:57,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash 453907207, now seen corresponding path program 1 times [2023-11-19 05:01:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:01:57,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036893807] [2023-11-19 05:01:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:57,761 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 05:01:57,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:01:57,763 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 05:01:57,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e387c708-b9ab-4e0b-a800-7f2a219ba0c1/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 (13)] Waiting until timeout for monitored process [2023-11-19 05:01:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:58,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:01:58,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:58,026 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 [2023-11-19 05:01:58,361 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 05:01:58,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:58,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:01:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036893807] [2023-11-19 05:01:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036893807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:58,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:58,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:58,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501704409] [2023-11-19 05:01:58,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:58,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:01:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:01:58,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:01:58,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:01:58,364 INFO L87 Difference]: Start difference. First operand 1709 states and 2310 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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)