./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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_5f8304fd-4934-4628-ac99-9075d29860f6/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 cb5220aa49e6d5ce07adbf2b5e67e7c8f277342987ef62ca05a827d2ae217f75 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:18:01,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:01,858 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:18:01,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:01,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:01,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:01,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:01,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:01,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:01,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:01,919 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:01,921 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:01,921 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:01,923 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:18:01,923 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:01,924 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:01,924 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:18:01,924 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:18:01,925 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:01,925 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:18:01,926 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:18:01,926 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:18:01,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:18:01,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:18:01,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:01,929 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:18:01,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:01,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:18:01,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:01,932 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:18:01,933 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:18:01,933 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:18:01,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:01,934 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:18:01,934 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:18:01,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:18:01,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:01,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:01,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:01,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:01,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:01,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:01,936 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:18:01,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:18:01,937 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:01,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:01,937 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_5f8304fd-4934-4628-ac99-9075d29860f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb5220aa49e6d5ce07adbf2b5e67e7c8f277342987ef62ca05a827d2ae217f75 [2023-11-19 05:18:02,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:02,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:02,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:02,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:02,260 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:02,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2023-11-19 05:18:05,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:05,769 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:05,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2023-11-19 05:18:05,805 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data/cf239e5b1/36fee9744a0e4e6ea1f9c1e9d1c15adc/FLAG9d1099113 [2023-11-19 05:18:05,824 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data/cf239e5b1/36fee9744a0e4e6ea1f9c1e9d1c15adc [2023-11-19 05:18:05,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:05,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:05,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:05,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:05,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:05,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:05" (1/1) ... [2023-11-19 05:18:05,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a130800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:05, skipping insertion in model container [2023-11-19 05:18:05,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:05" (1/1) ... [2023-11-19 05:18:05,919 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:06,225 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:18:06,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:06,525 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 05:18:06,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56e3f2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:06, skipping insertion in model container [2023-11-19 05:18:06,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:06,527 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:18:06,528 INFO L158 Benchmark]: Toolchain (without parser) took 699.86ms. Allocated memory is still 136.3MB. Free memory was 88.9MB in the beginning and 67.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:18:06,529 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:18:06,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 697.56ms. Allocated memory is still 136.3MB. Free memory was 88.4MB in the beginning and 68.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:18:06,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 136.3MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 697.56ms. Allocated memory is still 136.3MB. Free memory was 88.4MB in the beginning and 68.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 739]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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_5f8304fd-4934-4628-ac99-9075d29860f6/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 cb5220aa49e6d5ce07adbf2b5e67e7c8f277342987ef62ca05a827d2ae217f75 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:18:08,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:09,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 05:18:09,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:09,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:09,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:09,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:09,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:09,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:09,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:09,095 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:09,095 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:09,096 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:09,097 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:09,097 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:09,098 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:09,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:18:09,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:18:09,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:09,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:18:09,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:09,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:18:09,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:09,102 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:18:09,102 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:18:09,103 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:18:09,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:09,104 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:18:09,104 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:18:09,105 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:18:09,105 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:18:09,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:18:09,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:09,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:09,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:18:09,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:09,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:09,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:09,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:09,110 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:18:09,111 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:18:09,111 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:09,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:09,112 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_5f8304fd-4934-4628-ac99-9075d29860f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb5220aa49e6d5ce07adbf2b5e67e7c8f277342987ef62ca05a827d2ae217f75 [2023-11-19 05:18:09,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:09,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:09,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:09,537 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:09,538 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:09,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2023-11-19 05:18:12,582 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:13,084 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:13,086 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-2.i [2023-11-19 05:18:13,120 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data/643aaa43c/d53bea369407412b9f769b01f4d78dae/FLAG088be38d6 [2023-11-19 05:18:13,141 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/data/643aaa43c/d53bea369407412b9f769b01f4d78dae [2023-11-19 05:18:13,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:13,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:13,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:13,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:13,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:13,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:13" (1/1) ... [2023-11-19 05:18:13,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@501be191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:13, skipping insertion in model container [2023-11-19 05:18:13,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:13" (1/1) ... [2023-11-19 05:18:13,231 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:13,481 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:18:13,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:13,771 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:18:13,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:13,813 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:18:13,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:13,968 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:18:13,985 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:18:14,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:14,145 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:14,145 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:18:14,152 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:18:14,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14 WrapperNode [2023-11-19 05:18:14,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:14,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:14,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:18:14,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:18:14,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,332 INFO L138 Inliner]: procedures = 181, calls = 334, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1198 [2023-11-19 05:18:14,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:14,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:18:14,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:18:14,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:18:14,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:18:14,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:18:14,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:18:14,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:18:14,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (1/1) ... [2023-11-19 05:18:14,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:14,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:14,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:18:14,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:18:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:18:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:18:14,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:18:14,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:18:14,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:18:14,608 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:18:14,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:18:14,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:18:14,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:18:14,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:18:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:18:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:18:14,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:18:14,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:18:14,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:18:14,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:18:14,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:18:14,870 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:18:14,873 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:18:14,878 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:18:20,335 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:18:20,365 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:18:20,366 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-19 05:18:20,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:20 BoogieIcfgContainer [2023-11-19 05:18:20,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:18:20,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:18:20,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:18:20,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:18:20,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:18:13" (1/3) ... [2023-11-19 05:18:20,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b171d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:20, skipping insertion in model container [2023-11-19 05:18:20,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:14" (2/3) ... [2023-11-19 05:18:20,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b171d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:20, skipping insertion in model container [2023-11-19 05:18:20,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:20" (3/3) ... [2023-11-19 05:18:20,391 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-2.i [2023-11-19 05:18:20,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:18:20,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 636 error locations. [2023-11-19 05:18:20,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:18:20,506 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;@2e90a966, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:18:20,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 636 error locations. [2023-11-19 05:18:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 1269 states, 628 states have (on average 2.238853503184713) internal successors, (1406), 1262 states have internal predecessors, (1406), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:18:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:18:20,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:20,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:18:20,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:20,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1202725, now seen corresponding path program 1 times [2023-11-19 05:18:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:20,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129095327] [2023-11-19 05:18:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:20,542 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 05:18:20,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:20,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:20,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:20,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:20,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:20,819 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 05:18:20,833 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 05:18:20,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:20,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129095327] [2023-11-19 05:18:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129095327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:20,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:20,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:18:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999512576] [2023-11-19 05:18:20,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:20,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:20,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:20,875 INFO L87 Difference]: Start difference. First operand has 1269 states, 628 states have (on average 2.238853503184713) internal successors, (1406), 1262 states have internal predecessors, (1406), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 05:18:23,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:23,433 INFO L93 Difference]: Finished difference Result 1448 states and 1526 transitions. [2023-11-19 05:18:23,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:23,435 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 05:18:23,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:23,459 INFO L225 Difference]: With dead ends: 1448 [2023-11-19 05:18:23,459 INFO L226 Difference]: Without dead ends: 1446 [2023-11-19 05:18:23,461 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 05:18:23,465 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1175 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:23,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 928 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 05:18:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-11-19 05:18:23,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1257. [2023-11-19 05:18:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 631 states have (on average 2.088748019017433) internal successors, (1318), 1249 states have internal predecessors, (1318), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:18:23,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1328 transitions. [2023-11-19 05:18:23,581 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1328 transitions. Word has length 4 [2023-11-19 05:18:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:23,581 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1328 transitions. [2023-11-19 05:18:23,582 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 05:18:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1328 transitions. [2023-11-19 05:18:23,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:18:23,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:23,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:18:23,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:23,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:23,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1202726, now seen corresponding path program 1 times [2023-11-19 05:18:23,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:23,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472008934] [2023-11-19 05:18:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:23,787 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 05:18:23,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:23,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:23,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:23,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:18:23,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:23,930 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 05:18:23,952 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 05:18:23,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:23,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:23,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472008934] [2023-11-19 05:18:23,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472008934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:23,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:23,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:18:23,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128403893] [2023-11-19 05:18:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:23,957 INFO L87 Difference]: Start difference. First operand 1257 states and 1328 transitions. 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 05:18:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:27,804 INFO L93 Difference]: Finished difference Result 1859 states and 1974 transitions. [2023-11-19 05:18:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:27,805 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 05:18:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:27,814 INFO L225 Difference]: With dead ends: 1859 [2023-11-19 05:18:27,815 INFO L226 Difference]: Without dead ends: 1859 [2023-11-19 05:18:27,815 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 05:18:27,817 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 641 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:27,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1729 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 05:18:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2023-11-19 05:18:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1464. [2023-11-19 05:18:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 838 states have (on average 2.071599045346062) internal successors, (1736), 1455 states have internal predecessors, (1736), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:18:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1748 transitions. [2023-11-19 05:18:27,863 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1748 transitions. Word has length 4 [2023-11-19 05:18:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:27,864 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1748 transitions. [2023-11-19 05:18:27,864 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 05:18:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1748 transitions. [2023-11-19 05:18:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:18:27,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:27,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:18:27,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:28,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:28,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:28,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1204599, now seen corresponding path program 1 times [2023-11-19 05:18:28,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:28,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101478412] [2023-11-19 05:18:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:28,070 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 05:18:28,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:28,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:28,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:28,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:18:28,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:28,272 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_43| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_43|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_43| (_ bv0 1))))) is different from true [2023-11-19 05:18:28,278 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 05:18:28,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:28,279 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:28,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101478412] [2023-11-19 05:18:28,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101478412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:28,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:28,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:28,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812011145] [2023-11-19 05:18:28,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:28,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:28,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:28,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 05:18:28,284 INFO L87 Difference]: Start difference. First operand 1464 states and 1748 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 05:18:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:31,777 INFO L93 Difference]: Finished difference Result 2038 states and 2363 transitions. [2023-11-19 05:18:31,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:31,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 05:18:31,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:31,789 INFO L225 Difference]: With dead ends: 2038 [2023-11-19 05:18:31,789 INFO L226 Difference]: Without dead ends: 2037 [2023-11-19 05:18:31,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 05:18:31,794 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 611 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1934 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:31,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1732 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 1934 Unchecked, 3.4s Time] [2023-11-19 05:18:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-11-19 05:18:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1464. [2023-11-19 05:18:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 838 states have (on average 2.0704057279236276) internal successors, (1735), 1455 states have internal predecessors, (1735), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:18:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1747 transitions. [2023-11-19 05:18:31,846 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1747 transitions. Word has length 4 [2023-11-19 05:18:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:31,846 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1747 transitions. [2023-11-19 05:18:31,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 05:18:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1747 transitions. [2023-11-19 05:18:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:18:31,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:31,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:31,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:32,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:32,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:32,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:32,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1654943313, now seen corresponding path program 1 times [2023-11-19 05:18:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:32,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523354311] [2023-11-19 05:18:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:32,052 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 05:18:32,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:32,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:32,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:32,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:18:32,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:32,267 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 05:18:32,274 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 05:18:32,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:18:32,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 05:18:32,377 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 05:18:32,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-19 05:18:32,403 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 05:18:32,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:32,404 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523354311] [2023-11-19 05:18:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523354311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175452367] [2023-11-19 05:18:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:32,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:32,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:32,407 INFO L87 Difference]: Start difference. First operand 1464 states and 1747 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:36,576 INFO L93 Difference]: Finished difference Result 1646 states and 1939 transitions. [2023-11-19 05:18:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 05:18:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:36,585 INFO L225 Difference]: With dead ends: 1646 [2023-11-19 05:18:36,585 INFO L226 Difference]: Without dead ends: 1646 [2023-11-19 05:18:36,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:36,586 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2620 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:36,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 536 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 05:18:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2023-11-19 05:18:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1246. [2023-11-19 05:18:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 631 states have (on average 2.0665610142630744) internal successors, (1304), 1238 states have internal predecessors, (1304), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:18:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1314 transitions. [2023-11-19 05:18:36,621 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1314 transitions. Word has length 8 [2023-11-19 05:18:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:36,622 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1314 transitions. [2023-11-19 05:18:36,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1314 transitions. [2023-11-19 05:18:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:18:36,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:36,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:36,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:36,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:36,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:36,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:36,827 INFO L85 PathProgramCache]: Analyzing trace with hash 236364828, now seen corresponding path program 1 times [2023-11-19 05:18:36,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:36,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550749412] [2023-11-19 05:18:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:36,830 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 05:18:36,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:36,831 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:36,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:36,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:36,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:36,996 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 05:18:37,017 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 05:18:37,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:37,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550749412] [2023-11-19 05:18:37,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550749412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:37,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:18:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864262664] [2023-11-19 05:18:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:37,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:37,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:37,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:37,031 INFO L87 Difference]: Start difference. First operand 1246 states and 1314 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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 05:18:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:39,701 INFO L93 Difference]: Finished difference Result 1581 states and 1680 transitions. [2023-11-19 05:18:39,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:39,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 05:18:39,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:39,714 INFO L225 Difference]: With dead ends: 1581 [2023-11-19 05:18:39,714 INFO L226 Difference]: Without dead ends: 1581 [2023-11-19 05:18:39,714 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 05:18:39,715 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 985 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:39,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1521 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:18:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-11-19 05:18:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1198. [2023-11-19 05:18:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 631 states have (on average 1.9904912836767037) internal successors, (1256), 1190 states have internal predecessors, (1256), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:18:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1266 transitions. [2023-11-19 05:18:39,753 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1266 transitions. Word has length 9 [2023-11-19 05:18:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:39,754 INFO L495 AbstractCegarLoop]: Abstraction has 1198 states and 1266 transitions. [2023-11-19 05:18:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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 05:18:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1266 transitions. [2023-11-19 05:18:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:18:39,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:39,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:39,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:39,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:39,959 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:39,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:39,959 INFO L85 PathProgramCache]: Analyzing trace with hash 236364829, now seen corresponding path program 1 times [2023-11-19 05:18:39,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:39,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446763433] [2023-11-19 05:18:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:39,960 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 05:18:39,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:39,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:39,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:40,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:18:40,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:40,132 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 05:18:40,183 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 05:18:40,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:40,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:40,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446763433] [2023-11-19 05:18:40,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446763433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:40,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:40,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:18:40,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871556916] [2023-11-19 05:18:40,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:40,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:40,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:40,189 INFO L87 Difference]: Start difference. First operand 1198 states and 1266 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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 05:18:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:44,034 INFO L93 Difference]: Finished difference Result 1660 states and 1762 transitions. [2023-11-19 05:18:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 05:18:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:44,044 INFO L225 Difference]: With dead ends: 1660 [2023-11-19 05:18:44,044 INFO L226 Difference]: Without dead ends: 1660 [2023-11-19 05:18:44,045 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 05:18:44,046 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 681 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:44,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1900 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 05:18:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-11-19 05:18:44,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1220. [2023-11-19 05:18:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 663 states have (on average 1.9788838612368025) internal successors, (1312), 1212 states have internal predecessors, (1312), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:18:44,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1322 transitions. [2023-11-19 05:18:44,083 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1322 transitions. Word has length 9 [2023-11-19 05:18:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:44,084 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1322 transitions. [2023-11-19 05:18:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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 05:18:44,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1322 transitions. [2023-11-19 05:18:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:18:44,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:44,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:44,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:44,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:44,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:44,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1355556024, now seen corresponding path program 1 times [2023-11-19 05:18:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:44,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177070782] [2023-11-19 05:18:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:44,289 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 05:18:44,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:44,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:44,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:44,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:18:44,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:44,593 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 05:18:44,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:44,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:44,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177070782] [2023-11-19 05:18:44,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177070782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:44,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:44,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:18:44,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629595345] [2023-11-19 05:18:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:44,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:44,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:44,596 INFO L87 Difference]: Start difference. First operand 1220 states and 1322 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 05:18:45,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:45,820 INFO L93 Difference]: Finished difference Result 1873 states and 2020 transitions. [2023-11-19 05:18:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:18:45,821 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 05:18:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:45,829 INFO L225 Difference]: With dead ends: 1873 [2023-11-19 05:18:45,830 INFO L226 Difference]: Without dead ends: 1873 [2023-11-19 05:18:45,830 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 05:18:45,831 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 760 mSDsluCounter, 2330 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:45,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3714 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:18:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2023-11-19 05:18:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1471. [2023-11-19 05:18:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 913 states have (on average 1.9463307776560788) internal successors, (1777), 1462 states have internal predecessors, (1777), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:18:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1789 transitions. [2023-11-19 05:18:45,874 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1789 transitions. Word has length 12 [2023-11-19 05:18:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:45,874 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 1789 transitions. [2023-11-19 05:18:45,875 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 05:18:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1789 transitions. [2023-11-19 05:18:45,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:18:45,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:45,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:45,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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)] Ended with exit code 0 [2023-11-19 05:18:46,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:46,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:46,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 729190072, now seen corresponding path program 1 times [2023-11-19 05:18:46,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:46,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518733098] [2023-11-19 05:18:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:46,081 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 05:18:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:46,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:46,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:46,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:18:46,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:46,285 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 05:18:46,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:46,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518733098] [2023-11-19 05:18:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518733098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:46,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750132325] [2023-11-19 05:18:46,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:46,293 INFO L87 Difference]: Start difference. First operand 1471 states and 1789 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 05:18:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:46,338 INFO L93 Difference]: Finished difference Result 1411 states and 1703 transitions. [2023-11-19 05:18:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:46,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 05:18:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:46,346 INFO L225 Difference]: With dead ends: 1411 [2023-11-19 05:18:46,346 INFO L226 Difference]: Without dead ends: 1411 [2023-11-19 05:18:46,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 05:18:46,348 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 81 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2312 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 05:18:46,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2312 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:18:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2023-11-19 05:18:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2023-11-19 05:18:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 877 states have (on average 1.928164196123147) internal successors, (1691), 1402 states have internal predecessors, (1691), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:18:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1703 transitions. [2023-11-19 05:18:46,385 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1703 transitions. Word has length 14 [2023-11-19 05:18:46,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:46,386 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1703 transitions. [2023-11-19 05:18:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 05:18:46,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1703 transitions. [2023-11-19 05:18:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:18:46,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:46,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:46,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:46,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:46,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:46,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash 672015314, now seen corresponding path program 1 times [2023-11-19 05:18:46,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:46,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742664460] [2023-11-19 05:18:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:46,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:46,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:46,598 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:46,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:46,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:46,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:46,820 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 05:18:46,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:46,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742664460] [2023-11-19 05:18:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742664460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:46,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:46,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:18:46,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280806965] [2023-11-19 05:18:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:46,823 INFO L87 Difference]: Start difference. First operand 1411 states and 1703 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 05:18:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:46,918 INFO L93 Difference]: Finished difference Result 1383 states and 1647 transitions. [2023-11-19 05:18:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:46,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-11-19 05:18:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:46,926 INFO L225 Difference]: With dead ends: 1383 [2023-11-19 05:18:46,926 INFO L226 Difference]: Without dead ends: 1383 [2023-11-19 05:18:46,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 05:18:46,927 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 62 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3407 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 05:18:46,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3407 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:18:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-11-19 05:18:46,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1381. [2023-11-19 05:18:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 861 states have (on average 1.8966318234610917) internal successors, (1633), 1372 states have internal predecessors, (1633), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:18:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1645 transitions. [2023-11-19 05:18:46,957 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1645 transitions. Word has length 16 [2023-11-19 05:18:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:46,957 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 1645 transitions. [2023-11-19 05:18:46,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 05:18:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1645 transitions. [2023-11-19 05:18:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:18:46,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:46,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:46,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:47,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:47,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 6172992, now seen corresponding path program 1 times [2023-11-19 05:18:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743420356] [2023-11-19 05:18:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:47,162 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 05:18:47,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:47,163 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:47,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 05:18:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:47,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:18:47,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:47,545 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_44| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-19 05:18:47,545 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 05:18:47,545 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:47,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743420356] [2023-11-19 05:18:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743420356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:47,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:47,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:47,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181596557] [2023-11-19 05:18:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 05:18:47,548 INFO L87 Difference]: Start difference. First operand 1381 states and 1645 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 05:18:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:50,473 INFO L93 Difference]: Finished difference Result 1681 states and 2020 transitions. [2023-11-19 05:18:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:50,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-11-19 05:18:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:50,482 INFO L225 Difference]: With dead ends: 1681 [2023-11-19 05:18:50,482 INFO L226 Difference]: Without dead ends: 1673 [2023-11-19 05:18:50,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-19 05:18:50,483 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 246 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1431 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:50,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1697 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 647 Invalid, 0 Unknown, 1431 Unchecked, 2.9s Time] [2023-11-19 05:18:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2023-11-19 05:18:50,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1439. [2023-11-19 05:18:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 918 states have (on average 1.855119825708061) internal successors, (1703), 1429 states have internal predecessors, (1703), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:18:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1717 transitions. [2023-11-19 05:18:50,524 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1717 transitions. Word has length 17 [2023-11-19 05:18:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:50,524 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 1717 transitions. [2023-11-19 05:18:50,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 05:18:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1717 transitions. [2023-11-19 05:18:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:18:50,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:50,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:50,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:50,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:50,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:50,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1783704328, now seen corresponding path program 1 times [2023-11-19 05:18:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:50,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916250580] [2023-11-19 05:18:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:50,732 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 05:18:50,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:50,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:50,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 05:18:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:50,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:18:50,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:50,997 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 05:18:50,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:50,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:50,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916250580] [2023-11-19 05:18:50,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916250580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:50,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:50,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:50,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034006185] [2023-11-19 05:18:50,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:51,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:51,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:51,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:51,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:51,001 INFO L87 Difference]: Start difference. First operand 1439 states and 1717 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 05:18:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:51,048 INFO L93 Difference]: Finished difference Result 1379 states and 1631 transitions. [2023-11-19 05:18:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:51,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2023-11-19 05:18:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:51,056 INFO L225 Difference]: With dead ends: 1379 [2023-11-19 05:18:51,056 INFO L226 Difference]: Without dead ends: 1379 [2023-11-19 05:18:51,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 05:18:51,057 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 81 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2156 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 05:18:51,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2156 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:18:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2023-11-19 05:18:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2023-11-19 05:18:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 882 states have (on average 1.8333333333333333) internal successors, (1617), 1369 states have internal predecessors, (1617), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:18:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1631 transitions. [2023-11-19 05:18:51,092 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1631 transitions. Word has length 19 [2023-11-19 05:18:51,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:51,092 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 1631 transitions. [2023-11-19 05:18:51,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 05:18:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1631 transitions. [2023-11-19 05:18:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:18:51,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:51,099 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] [2023-11-19 05:18:51,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:51,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:51,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash 447904642, now seen corresponding path program 1 times [2023-11-19 05:18:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:51,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203960116] [2023-11-19 05:18:51,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:51,305 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 05:18:51,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:51,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:51,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-19 05:18:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:51,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:51,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:51,563 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 05:18:51,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:51,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203960116] [2023-11-19 05:18:51,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203960116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:51,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:51,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:18:51,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621436137] [2023-11-19 05:18:51,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:51,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:51,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:51,566 INFO L87 Difference]: Start difference. First operand 1379 states and 1631 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 05:18:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:51,664 INFO L93 Difference]: Finished difference Result 1351 states and 1575 transitions. [2023-11-19 05:18:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:51,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2023-11-19 05:18:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:51,672 INFO L225 Difference]: With dead ends: 1351 [2023-11-19 05:18:51,672 INFO L226 Difference]: Without dead ends: 1351 [2023-11-19 05:18:51,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 05:18:51,673 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 62 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3173 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 05:18:51,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3173 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:18:51,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-11-19 05:18:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2023-11-19 05:18:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 866 states have (on average 1.800230946882217) internal successors, (1559), 1339 states have internal predecessors, (1559), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:18:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1573 transitions. [2023-11-19 05:18:51,701 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1573 transitions. Word has length 21 [2023-11-19 05:18:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:51,701 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1573 transitions. [2023-11-19 05:18:51,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 05:18:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1573 transitions. [2023-11-19 05:18:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:18:51,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:51,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:51,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:51,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr378REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:51,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -304556672, now seen corresponding path program 1 times [2023-11-19 05:18:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002774783] [2023-11-19 05:18:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:51,908 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 05:18:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:51,910 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:51,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 (14)] Waiting until timeout for monitored process [2023-11-19 05:18:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:52,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:18:52,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:52,094 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 05:18:52,200 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 05:18:52,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:52,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002774783] [2023-11-19 05:18:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002774783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:52,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:52,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:52,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690627012] [2023-11-19 05:18:52,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:52,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:52,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:52,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:52,206 INFO L87 Difference]: Start difference. First operand 1349 states and 1573 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 05:18:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:55,319 INFO L93 Difference]: Finished difference Result 1532 states and 1757 transitions. [2023-11-19 05:18:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2023-11-19 05:18:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:55,327 INFO L225 Difference]: With dead ends: 1532 [2023-11-19 05:18:55,327 INFO L226 Difference]: Without dead ends: 1532 [2023-11-19 05:18:55,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 05:18:55,328 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 972 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:55,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1377 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 05:18:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2023-11-19 05:18:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1345. [2023-11-19 05:18:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 866 states have (on average 1.7863741339491916) internal successors, (1547), 1335 states have internal predecessors, (1547), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:18:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1561 transitions. [2023-11-19 05:18:55,355 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1561 transitions. Word has length 30 [2023-11-19 05:18:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:55,356 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 1561 transitions. [2023-11-19 05:18:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 05:18:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1561 transitions. [2023-11-19 05:18:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:18:55,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:55,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:55,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:55,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:55,561 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr379REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 633 more)] === [2023-11-19 05:18:55,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -304556671, now seen corresponding path program 1 times [2023-11-19 05:18:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:55,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491227668] [2023-11-19 05:18:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:55,563 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 05:18:55,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:55,565 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 05:18:55,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f8304fd-4934-4628-ac99-9075d29860f6/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 (15)] Waiting until timeout for monitored process [2023-11-19 05:18:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:55,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:18:55,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:55,791 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 05:18:56,031 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 05:18:56,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:56,032 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:56,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491227668] [2023-11-19 05:18:56,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491227668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:56,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:56,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505032055] [2023-11-19 05:18:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:56,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:56,034 INFO L87 Difference]: Start difference. First operand 1345 states and 1561 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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)