./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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_291e4317-75f4-4693-a66b-4991bcccfaaf/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 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:30,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:30,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:22:30,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:30,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:30,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:30,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:30,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:30,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:30,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:30,937 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:30,937 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:30,938 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:30,939 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:22:30,939 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:30,940 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:30,940 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:22:30,941 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:22:30,942 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:30,942 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:22:30,943 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:22:30,944 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:22:30,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:22:30,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:22:30,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:30,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:30,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:30,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:30,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:30,949 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:22:30,950 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:22:30,950 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:22:30,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:30,951 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:22:30,952 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:22:30,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:30,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:30,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:30,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:30,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:30,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:30,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:30,955 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:22:30,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:22:30,956 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:30,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:30,956 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_291e4317-75f4-4693-a66b-4991bcccfaaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee [2023-11-19 05:22:31,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:31,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:31,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:31,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:31,299 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:31,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 05:22:34,564 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:35,005 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:35,006 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 05:22:35,037 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data/fceacf7c2/ad45835229144d27aa27e231ad304c34/FLAGfd9af2067 [2023-11-19 05:22:35,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data/fceacf7c2/ad45835229144d27aa27e231ad304c34 [2023-11-19 05:22:35,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:35,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:35,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:35,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:35,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:35,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:35" (1/1) ... [2023-11-19 05:22:35,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4566a738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:35, skipping insertion in model container [2023-11-19 05:22:35,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:35" (1/1) ... [2023-11-19 05:22:35,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:35,545 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:22:36,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:36,024 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 05:22:36,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c2c1ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:36, skipping insertion in model container [2023-11-19 05:22:36,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:36,026 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:22:36,028 INFO L158 Benchmark]: Toolchain (without parser) took 958.22ms. Allocated memory is still 140.5MB. Free memory was 92.9MB in the beginning and 71.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 05:22:36,029 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 140.5MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:22:36,030 INFO L158 Benchmark]: CACSL2BoogieTranslator took 952.57ms. Allocated memory is still 140.5MB. Free memory was 92.5MB in the beginning and 71.0MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 05:22:36,032 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 140.5MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 952.57ms. Allocated memory is still 140.5MB. Free memory was 92.5MB in the beginning and 71.0MB in the end (delta: 21.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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_291e4317-75f4-4693-a66b-4991bcccfaaf/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 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:38,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:38,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 05:22:38,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:38,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:38,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:38,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:38,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:38,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:38,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:38,947 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:38,947 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:38,948 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:38,950 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:38,950 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:38,951 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:38,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:22:38,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:22:38,953 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:38,954 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:38,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:38,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:38,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:38,956 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:22:38,956 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:22:38,956 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:22:38,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:38,957 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:22:38,958 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:22:38,958 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:22:38,960 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:22:38,960 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:38,960 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:38,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:38,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:22:38,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:38,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:38,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:38,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:38,963 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:22:38,964 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:22:38,964 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:38,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:38,964 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_291e4317-75f4-4693-a66b-4991bcccfaaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee [2023-11-19 05:22:39,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:39,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:39,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:39,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:39,469 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:39,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 05:22:42,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:43,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:43,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-3.i [2023-11-19 05:22:43,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data/d4334b7f2/5f6f230beb9a48ceb91053c75679e472/FLAGa6e7156cd [2023-11-19 05:22:43,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/data/d4334b7f2/5f6f230beb9a48ceb91053c75679e472 [2023-11-19 05:22:43,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:43,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:43,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:43,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:43,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:43,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:43" (1/1) ... [2023-11-19 05:22:43,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d32eb40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:43, skipping insertion in model container [2023-11-19 05:22:43,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:43" (1/1) ... [2023-11-19 05:22:43,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:43,570 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:22:44,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:44,067 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:22:44,084 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:44,092 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:22:44,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:44,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:44,272 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:22:44,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:44,420 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:22:44,429 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:44,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44 WrapperNode [2023-11-19 05:22:44,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:44,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:44,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:44,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:44,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,641 INFO L138 Inliner]: procedures = 181, calls = 440, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1449 [2023-11-19 05:22:44,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:44,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:44,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:44,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:44,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,783 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:44,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:44,829 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:44,829 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:44,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (1/1) ... [2023-11-19 05:22:44,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:44,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:44,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:44,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:22:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:22:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:22:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:22:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:22:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:22:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:22:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:22:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:22:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:22:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:22:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:45,296 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:45,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:45,303 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:22:53,141 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:53,171 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:53,172 INFO L302 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-19 05:22:53,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:53 BoogieIcfgContainer [2023-11-19 05:22:53,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:53,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:53,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:53,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:53,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:43" (1/3) ... [2023-11-19 05:22:53,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28799636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:53, skipping insertion in model container [2023-11-19 05:22:53,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:44" (2/3) ... [2023-11-19 05:22:53,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28799636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:53, skipping insertion in model container [2023-11-19 05:22:53,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:53" (3/3) ... [2023-11-19 05:22:53,202 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-3.i [2023-11-19 05:22:53,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:53,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-19 05:22:53,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:22:53,331 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;@549c2a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:22:53,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-19 05:22:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 1643 states, 790 states have (on average 2.267088607594937) internal successors, (1791), 1635 states have internal predecessors, (1791), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:22:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:22:53,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:53,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:22:53,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr850ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:22:53,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1205042, now seen corresponding path program 1 times [2023-11-19 05:22:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:53,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549183562] [2023-11-19 05:22:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:53,380 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 05:22:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:53,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:22:53,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:22:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:53,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:22:53,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:53,743 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 05:22:53,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:53,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:53,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549183562] [2023-11-19 05:22:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549183562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:53,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:53,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:22:53,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215108378] [2023-11-19 05:22:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:53,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:53,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:53,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:53,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:53,814 INFO L87 Difference]: Start difference. First operand has 1643 states, 790 states have (on average 2.267088607594937) internal successors, (1791), 1635 states have internal predecessors, (1791), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 05:22:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:58,082 INFO L93 Difference]: Finished difference Result 2004 states and 2099 transitions. [2023-11-19 05:22:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:58,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-19 05:22:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:58,115 INFO L225 Difference]: With dead ends: 2004 [2023-11-19 05:22:58,115 INFO L226 Difference]: Without dead ends: 2000 [2023-11-19 05:22:58,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 05:22:58,122 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 399 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:58,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 2542 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 05:22:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-11-19 05:22:58,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1641. [2023-11-19 05:22:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 799 states have (on average 2.146433041301627) internal successors, (1715), 1633 states have internal predecessors, (1715), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:22:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1727 transitions. [2023-11-19 05:22:58,290 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1727 transitions. Word has length 4 [2023-11-19 05:22:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:58,290 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 1727 transitions. [2023-11-19 05:22:58,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 05:22:58,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1727 transitions. [2023-11-19 05:22:58,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:22:58,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:58,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:22:58,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:22:58,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:22:58,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:22:58,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825422, now seen corresponding path program 1 times [2023-11-19 05:22:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:22:58,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630008501] [2023-11-19 05:22:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:58,498 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 05:22:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:22:58,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:22:58,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:22:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:58,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:22:58,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:22:58,773 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 05:22:58,786 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 05:22:58,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:22:58,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:22:58,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630008501] [2023-11-19 05:22:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630008501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:58,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:58,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:22:58,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136650272] [2023-11-19 05:22:58,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:58,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:58,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:22:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:58,792 INFO L87 Difference]: Start difference. First operand 1641 states and 1727 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:02,671 INFO L93 Difference]: Finished difference Result 1685 states and 1782 transitions. [2023-11-19 05:23:02,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:02,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:23:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:02,681 INFO L225 Difference]: With dead ends: 1685 [2023-11-19 05:23:02,682 INFO L226 Difference]: Without dead ends: 1685 [2023-11-19 05:23:02,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:02,684 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1150 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:02,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1269 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 05:23:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-11-19 05:23:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1628. [2023-11-19 05:23:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 879 states have (on average 2.0011376564277588) internal successors, (1759), 1620 states have internal predecessors, (1759), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:23:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 1771 transitions. [2023-11-19 05:23:02,746 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 1771 transitions. Word has length 6 [2023-11-19 05:23:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:02,746 INFO L495 AbstractCegarLoop]: Abstraction has 1628 states and 1771 transitions. [2023-11-19 05:23:02,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 1771 transitions. [2023-11-19 05:23:02,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:23:02,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:02,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:23:02,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 05:23:02,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:02,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:02,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:02,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1155825423, now seen corresponding path program 1 times [2023-11-19 05:23:02,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:02,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336158975] [2023-11-19 05:23:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:02,952 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 05:23:02,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:02,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:02,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:03,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:23:03,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:03,140 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 05:23:03,167 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 05:23:03,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:23:03,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:23:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336158975] [2023-11-19 05:23:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336158975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:03,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:03,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485350658] [2023-11-19 05:23:03,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:03,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:23:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:03,178 INFO L87 Difference]: Start difference. First operand 1628 states and 1771 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:08,734 INFO L93 Difference]: Finished difference Result 1938 states and 2101 transitions. [2023-11-19 05:23:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:08,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:23:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:08,747 INFO L225 Difference]: With dead ends: 1938 [2023-11-19 05:23:08,748 INFO L226 Difference]: Without dead ends: 1938 [2023-11-19 05:23:08,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:08,750 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 512 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:08,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2017 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-19 05:23:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2023-11-19 05:23:08,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1788. [2023-11-19 05:23:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1049 states have (on average 1.9723546234509057) internal successors, (2069), 1780 states have internal predecessors, (2069), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:23:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2081 transitions. [2023-11-19 05:23:08,811 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2081 transitions. Word has length 6 [2023-11-19 05:23:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:08,811 INFO L495 AbstractCegarLoop]: Abstraction has 1788 states and 2081 transitions. [2023-11-19 05:23:08,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2081 transitions. [2023-11-19 05:23:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:23:08,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:08,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:08,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:09,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:09,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:09,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1472540985, now seen corresponding path program 1 times [2023-11-19 05:23:09,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:09,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396955560] [2023-11-19 05:23:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:09,024 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 05:23:09,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:09,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:09,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:09,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:23:09,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:09,317 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 05:23:09,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:23:09,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:23:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396955560] [2023-11-19 05:23:09,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396955560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:09,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:09,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:23:09,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176791310] [2023-11-19 05:23:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:09,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:23:09,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:09,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:09,328 INFO L87 Difference]: Start difference. First operand 1788 states and 2081 transitions. Second operand has 4 states, 4 states have (on average 1.75) 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 05:23:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:10,742 INFO L93 Difference]: Finished difference Result 3031 states and 3524 transitions. [2023-11-19 05:23:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:23:10,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 05:23:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:10,759 INFO L225 Difference]: With dead ends: 3031 [2023-11-19 05:23:10,759 INFO L226 Difference]: Without dead ends: 3031 [2023-11-19 05:23:10,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 05:23:10,760 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1186 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 4448 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:10,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 4448 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 05:23:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2023-11-19 05:23:10,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2342. [2023-11-19 05:23:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 1603 states have (on average 1.9413599500935745) internal successors, (3112), 2331 states have internal predecessors, (3112), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:23:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3130 transitions. [2023-11-19 05:23:10,862 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3130 transitions. Word has length 7 [2023-11-19 05:23:10,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:10,862 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 3130 transitions. [2023-11-19 05:23:10,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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 05:23:10,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3130 transitions. [2023-11-19 05:23:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:23:10,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:10,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:10,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:11,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:11,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr647REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:11,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2067682115, now seen corresponding path program 1 times [2023-11-19 05:23:11,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:11,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428339782] [2023-11-19 05:23:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:11,067 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 05:23:11,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:11,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:11,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:11,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:23:11,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:11,356 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 05:23:11,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:23:11,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:23:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428339782] [2023-11-19 05:23:11,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428339782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:11,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:11,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:23:11,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387050002] [2023-11-19 05:23:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:11,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:23:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:11,364 INFO L87 Difference]: Start difference. First operand 2342 states and 3130 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:11,729 INFO L93 Difference]: Finished difference Result 2627 states and 3267 transitions. [2023-11-19 05:23:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:11,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:23:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:11,747 INFO L225 Difference]: With dead ends: 2627 [2023-11-19 05:23:11,747 INFO L226 Difference]: Without dead ends: 2627 [2023-11-19 05:23:11,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 05:23:11,749 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 597 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:11,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 3116 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:23:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2023-11-19 05:23:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2204. [2023-11-19 05:23:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1465 states have (on average 1.9488054607508531) internal successors, (2855), 2193 states have internal predecessors, (2855), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:23:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2873 transitions. [2023-11-19 05:23:11,823 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2873 transitions. Word has length 9 [2023-11-19 05:23:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:11,823 INFO L495 AbstractCegarLoop]: Abstraction has 2204 states and 2873 transitions. [2023-11-19 05:23:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2873 transitions. [2023-11-19 05:23:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:23:11,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:11,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:11,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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)] Ended with exit code 0 [2023-11-19 05:23:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:12,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr649REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:12,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash -95505278, now seen corresponding path program 1 times [2023-11-19 05:23:12,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:12,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103087444] [2023-11-19 05:23:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:12,028 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 05:23:12,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:12,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:12,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:12,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:23:12,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:12,328 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 05:23:12,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:23:12,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:23:12,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103087444] [2023-11-19 05:23:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103087444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:12,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:12,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:23:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665622823] [2023-11-19 05:23:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:23:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:12,333 INFO L87 Difference]: Start difference. First operand 2204 states and 2873 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 05:23:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:13,949 INFO L93 Difference]: Finished difference Result 2627 states and 3266 transitions. [2023-11-19 05:23:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:23:13,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2023-11-19 05:23:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:13,967 INFO L225 Difference]: With dead ends: 2627 [2023-11-19 05:23:13,968 INFO L226 Difference]: Without dead ends: 2621 [2023-11-19 05:23:13,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 05:23:13,969 INFO L413 NwaCegarLoop]: 1660 mSDtfsCounter, 603 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:13,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 4555 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 05:23:13,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2023-11-19 05:23:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2198. [2023-11-19 05:23:14,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 1459 states have (on average 1.952021932830706) internal successors, (2848), 2187 states have internal predecessors, (2848), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:23:14,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 2866 transitions. [2023-11-19 05:23:14,042 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 2866 transitions. Word has length 12 [2023-11-19 05:23:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:14,042 INFO L495 AbstractCegarLoop]: Abstraction has 2198 states and 2866 transitions. [2023-11-19 05:23:14,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 05:23:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 2866 transitions. [2023-11-19 05:23:14,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:23:14,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:14,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:14,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:14,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:14,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:14,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash 759655000, now seen corresponding path program 1 times [2023-11-19 05:23:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:14,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378181777] [2023-11-19 05:23:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:14,249 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 05:23:14,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:14,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:14,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:14,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:23:14,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:14,512 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 05:23:14,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:23:14,513 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:23:14,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378181777] [2023-11-19 05:23:14,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378181777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:14,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:14,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:23:14,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245699721] [2023-11-19 05:23:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:14,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:14,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:23:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:14,516 INFO L87 Difference]: Start difference. First operand 2198 states and 2866 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:23:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:14,577 INFO L93 Difference]: Finished difference Result 2138 states and 2780 transitions. [2023-11-19 05:23:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-11-19 05:23:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:14,592 INFO L225 Difference]: With dead ends: 2138 [2023-11-19 05:23:14,592 INFO L226 Difference]: Without dead ends: 2138 [2023-11-19 05:23:14,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 05:23:14,594 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 81 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3002 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 05:23:14,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 3002 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:14,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2023-11-19 05:23:14,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2138. [2023-11-19 05:23:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1423 states have (on average 1.9409697821503864) internal successors, (2762), 2127 states have internal predecessors, (2762), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:23:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 2780 transitions. [2023-11-19 05:23:14,667 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 2780 transitions. Word has length 12 [2023-11-19 05:23:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:14,668 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 2780 transitions. [2023-11-19 05:23:14,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 05:23:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 2780 transitions. [2023-11-19 05:23:14,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:23:14,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:14,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:14,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:14,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:14,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:14,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash -115989326, now seen corresponding path program 1 times [2023-11-19 05:23:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:14,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834833684] [2023-11-19 05:23:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:14,881 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 05:23:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:14,886 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:14,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:15,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:23:15,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:15,136 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 05:23:15,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:23:15,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:23:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834833684] [2023-11-19 05:23:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834833684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:15,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:15,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:23:15,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202944440] [2023-11-19 05:23:15,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:15,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:15,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:23:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:15,141 INFO L87 Difference]: Start difference. First operand 2138 states and 2780 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 05:23:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:15,292 INFO L93 Difference]: Finished difference Result 2110 states and 2724 transitions. [2023-11-19 05:23:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:23:15,293 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 05:23:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:15,309 INFO L225 Difference]: With dead ends: 2110 [2023-11-19 05:23:15,309 INFO L226 Difference]: Without dead ends: 2110 [2023-11-19 05:23:15,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 05:23:15,311 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 62 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 4442 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 05:23:15,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 4442 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2023-11-19 05:23:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2108. [2023-11-19 05:23:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1407 states have (on average 1.9218194740582801) internal successors, (2704), 2097 states have internal predecessors, (2704), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:23:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2722 transitions. [2023-11-19 05:23:15,373 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2722 transitions. Word has length 14 [2023-11-19 05:23:15,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:15,373 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 2722 transitions. [2023-11-19 05:23:15,374 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 05:23:15,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2722 transitions. [2023-11-19 05:23:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:23:15,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:15,375 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] [2023-11-19 05:23:15,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:15,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:15,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:15,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 662304, now seen corresponding path program 1 times [2023-11-19 05:23:15,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:15,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12085285] [2023-11-19 05:23:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:15,581 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 05:23:15,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:15,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:15,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:15,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:23:15,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:15,859 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 05:23:16,037 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 05:23:16,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:23:16,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:23:16,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12085285] [2023-11-19 05:23:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12085285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:16,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:16,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:23:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460468119] [2023-11-19 05:23:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:23:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:16,043 INFO L87 Difference]: Start difference. First operand 2108 states and 2722 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 05:23:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:21,162 INFO L93 Difference]: Finished difference Result 2161 states and 2725 transitions. [2023-11-19 05:23:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:23:21,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2023-11-19 05:23:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:21,174 INFO L225 Difference]: With dead ends: 2161 [2023-11-19 05:23:21,175 INFO L226 Difference]: Without dead ends: 2161 [2023-11-19 05:23:21,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 05:23:21,176 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1079 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:21,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1887 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-19 05:23:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2023-11-19 05:23:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2104. [2023-11-19 05:23:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1407 states have (on average 1.916133617626155) internal successors, (2696), 2093 states have internal predecessors, (2696), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:23:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 2714 transitions. [2023-11-19 05:23:21,236 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 2714 transitions. Word has length 28 [2023-11-19 05:23:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:21,237 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 2714 transitions. [2023-11-19 05:23:21,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 05:23:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 2714 transitions. [2023-11-19 05:23:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:23:21,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:21,238 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] [2023-11-19 05:23:21,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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)] Ended with exit code 0 [2023-11-19 05:23:21,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:21,442 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-19 05:23:21,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash 662305, now seen corresponding path program 1 times [2023-11-19 05:23:21,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:23:21,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919956921] [2023-11-19 05:23:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:21,443 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 05:23:21,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:23:21,451 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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 05:23:21,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291e4317-75f4-4693-a66b-4991bcccfaaf/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