./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:01:17,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:01:17,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:01:18,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:01:18,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:01:18,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:01:18,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:01:18,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:01:18,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:01:18,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:01:18,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:01:18,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:01:18,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:01:18,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:01:18,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:01:18,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:01:18,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:01:18,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:01:18,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:01:18,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:01:18,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:01:18,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:01:18,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:01:18,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:01:18,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:01:18,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:01:18,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:01:18,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:01:18,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:01:18,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:01:18,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:01:18,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:01:18,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:01:18,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:01:18,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:01:18,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:01:18,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:01:18,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:01:18,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:01:18,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:01:18,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:01:18,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:01:18,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:01:18,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:01:18,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:01:18,169 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:01:18,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:01:18,169 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:01:18,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:01:18,170 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:01:18,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:01:18,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:01:18,175 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:01:18,175 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:01:18,176 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:01:18,176 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:01:18,176 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:01:18,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:01:18,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:01:18,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:01:18,178 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:01:18,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:01:18,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:01:18,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:01:18,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:01:18,179 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:01:18,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:01:18,180 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:01:18,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:01:18,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:01:18,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:01:18,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:01:18,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:01:18,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:01:18,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:01:18,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:01:18,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:01:18,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:01:18,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:01:18,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:01:18,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:01:18,186 INFO L138 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_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2021-11-03 04:01:18,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:01:18,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:01:18,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:01:18,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:01:18,515 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:01:18,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-03 04:01:18,612 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/47b048944/241e0bea5e8a4261ade84c4282d68cb5/FLAG5a38b9210 [2021-11-03 04:01:19,284 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:01:19,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-03 04:01:19,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/47b048944/241e0bea5e8a4261ade84c4282d68cb5/FLAG5a38b9210 [2021-11-03 04:01:19,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/47b048944/241e0bea5e8a4261ade84c4282d68cb5 [2021-11-03 04:01:19,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:01:19,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:01:19,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:01:19,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:01:19,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:01:19,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:01:19" (1/1) ... [2021-11-03 04:01:19,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdb8bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:19, skipping insertion in model container [2021-11-03 04:01:19,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:01:19" (1/1) ... [2021-11-03 04:01:19,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:01:19,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:01:20,125 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-03 04:01:20,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:01:20,259 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:01:20,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c860ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:20, skipping insertion in model container [2021-11-03 04:01:20,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:01:20,260 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:01:20,263 INFO L168 Benchmark]: Toolchain (without parser) took 781.49 ms. Allocated memory is still 94.4 MB. Free memory was 56.9 MB in the beginning and 61.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:01:20,264 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:01:20,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.89 ms. Allocated memory is still 94.4 MB. Free memory was 56.6 MB in the beginning and 61.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:01:20,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 94.4 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 764.89 ms. Allocated memory is still 94.4 MB. Free memory was 56.6 MB in the beginning and 61.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:01:22,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:01:22,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:01:22,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:01:22,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:01:22,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:01:22,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:01:22,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:01:22,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:01:22,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:01:22,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:01:22,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:01:22,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:01:22,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:01:22,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:01:22,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:01:22,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:01:22,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:01:22,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:01:22,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:01:22,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:01:22,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:01:23,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:01:23,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:01:23,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:01:23,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:01:23,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:01:23,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:01:23,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:01:23,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:01:23,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:01:23,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:01:23,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:01:23,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:01:23,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:01:23,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:01:23,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:01:23,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:01:23,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:01:23,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:01:23,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:01:23,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:01:23,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:01:23,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:01:23,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:01:23,104 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:01:23,104 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:01:23,104 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:01:23,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:01:23,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:01:23,106 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:01:23,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:01:23,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:01:23,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:01:23,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:01:23,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:01:23,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:01:23,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:01:23,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:01:23,111 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:01:23,111 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:01:23,112 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:01:23,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:01:23,112 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:01:23,113 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:01:23,113 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:01:23,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:01:23,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:01:23,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:01:23,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:01:23,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:01:23,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:01:23,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:01:23,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:01:23,116 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:01:23,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:01:23,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:01:23,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:01:23,117 INFO L138 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_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2021-11-03 04:01:23,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:01:23,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:01:23,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:01:23,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:01:23,643 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:01:23,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-03 04:01:23,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/0d002c048/a3633e7de98e48b094b60b9e697e7bd9/FLAG2a923b169 [2021-11-03 04:01:24,573 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:01:24,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-03 04:01:24,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/0d002c048/a3633e7de98e48b094b60b9e697e7bd9/FLAG2a923b169 [2021-11-03 04:01:24,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/data/0d002c048/a3633e7de98e48b094b60b9e697e7bd9 [2021-11-03 04:01:24,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:01:24,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:01:24,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:01:24,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:01:24,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:01:24,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:01:24" (1/1) ... [2021-11-03 04:01:24,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d09c58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:24, skipping insertion in model container [2021-11-03 04:01:24,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:01:24" (1/1) ... [2021-11-03 04:01:24,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:01:24,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:01:25,294 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-03 04:01:25,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:01:25,490 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:01:25,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:01:25,558 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-03 04:01:25,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:01:25,640 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:01:25,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-03 04:01:25,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:01:25,838 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:01:25,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25 WrapperNode [2021-11-03 04:01:25,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:01:25,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:01:25,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:01:25,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:01:25,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:25,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:25,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:01:25,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:01:25,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:01:25,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:01:25,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:25,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:25,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:25,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:26,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:26,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:26,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:26,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:01:26,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:01:26,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:01:26,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:01:26,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (1/1) ... [2021-11-03 04:01:26,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:01:26,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:01:26,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:01:26,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:01:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:01:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:01:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:01:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:01:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:01:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:01:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:01:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:01:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:01:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:01:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:01:30,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:01:30,254 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-03 04:01:30,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:01:30 BoogieIcfgContainer [2021-11-03 04:01:30,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:01:30,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:01:30,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:01:30,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:01:30,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:01:24" (1/3) ... [2021-11-03 04:01:30,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b22f972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:01:30, skipping insertion in model container [2021-11-03 04:01:30,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:01:25" (2/3) ... [2021-11-03 04:01:30,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b22f972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:01:30, skipping insertion in model container [2021-11-03 04:01:30,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:01:30" (3/3) ... [2021-11-03 04:01:30,275 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-1.i [2021-11-03 04:01:30,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:01:30,283 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 339 error locations. [2021-11-03 04:01:30,349 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:01:30,360 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:01:30,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 339 error locations. [2021-11-03 04:01:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 346 states have (on average 2.222543352601156) internal successors, (769), 685 states have internal predecessors, (769), 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) [2021-11-03 04:01:30,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:01:30,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:30,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:01:30,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:30,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 04:01:30,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:30,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45450712] [2021-11-03 04:01:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:30,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:30,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:30,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:30,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:01:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:30,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:01:30,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:30,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:30,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:30,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45450712] [2021-11-03 04:01:30,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45450712] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:30,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:30,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:01:30,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791275702] [2021-11-03 04:01:30,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:01:30,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:01:30,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:01:30,761 INFO L87 Difference]: Start difference. First operand has 686 states, 346 states have (on average 2.222543352601156) internal successors, (769), 685 states have internal predecessors, (769), 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-03 04:01:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:30,823 INFO L93 Difference]: Finished difference Result 677 states and 715 transitions. [2021-11-03 04:01:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:01:30,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-03 04:01:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:30,850 INFO L225 Difference]: With dead ends: 677 [2021-11-03 04:01:30,850 INFO L226 Difference]: Without dead ends: 675 [2021-11-03 04:01:30,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:01:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-03 04:01:30,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2021-11-03 04:01:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 341 states have (on average 2.090909090909091) internal successors, (713), 674 states have internal predecessors, (713), 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) [2021-11-03 04:01:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 713 transitions. [2021-11-03 04:01:30,985 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 713 transitions. Word has length 5 [2021-11-03 04:01:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:30,986 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 713 transitions. [2021-11-03 04:01:30,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-03 04:01:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 713 transitions. [2021-11-03 04:01:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:01:30,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:30,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:01:31,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:31,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:31,195 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 04:01:31,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:31,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107393897] [2021-11-03 04:01:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:31,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:31,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:31,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:31,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:01:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:31,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:01:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:31,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:01:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:31,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:31,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:31,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107393897] [2021-11-03 04:01:31,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107393897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:31,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:31,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:01:31,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681740231] [2021-11-03 04:01:31,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:01:31,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:01:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:31,500 INFO L87 Difference]: Start difference. First operand 675 states and 713 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-03 04:01:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:33,373 INFO L93 Difference]: Finished difference Result 633 states and 672 transitions. [2021-11-03 04:01:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:01:33,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-03 04:01:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:33,382 INFO L225 Difference]: With dead ends: 633 [2021-11-03 04:01:33,382 INFO L226 Difference]: Without dead ends: 633 [2021-11-03 04:01:33,388 INFO L786 BasicCegarLoop]: 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 [2021-11-03 04:01:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-03 04:01:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2021-11-03 04:01:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 341 states have (on average 1.9472140762463344) internal successors, (664), 625 states have internal predecessors, (664), 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) [2021-11-03 04:01:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 664 transitions. [2021-11-03 04:01:33,457 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 664 transitions. Word has length 5 [2021-11-03 04:01:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:33,458 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 664 transitions. [2021-11-03 04:01:33,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-03 04:01:33,459 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 664 transitions. [2021-11-03 04:01:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:01:33,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:33,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:01:33,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:01:33,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:33,673 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 04:01:33,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:33,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405737565] [2021-11-03 04:01:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:33,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:33,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:33,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:33,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:01:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:33,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:01:33,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:33,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:01:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:33,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:33,992 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:33,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405737565] [2021-11-03 04:01:33,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405737565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:33,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:33,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:01:33,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86944983] [2021-11-03 04:01:33,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:33,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:33,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:33,998 INFO L87 Difference]: Start difference. First operand 626 states and 664 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) [2021-11-03 04:01:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:37,601 INFO L93 Difference]: Finished difference Result 699 states and 741 transitions. [2021-11-03 04:01:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:01:37,602 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 5 [2021-11-03 04:01:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:37,608 INFO L225 Difference]: With dead ends: 699 [2021-11-03 04:01:37,608 INFO L226 Difference]: Without dead ends: 699 [2021-11-03 04:01:37,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-11-03 04:01:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 648. [2021-11-03 04:01:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 373 states have (on average 1.9302949061662198) internal successors, (720), 647 states have internal predecessors, (720), 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) [2021-11-03 04:01:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 720 transitions. [2021-11-03 04:01:37,629 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 720 transitions. Word has length 5 [2021-11-03 04:01:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:37,630 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 720 transitions. [2021-11-03 04:01:37,630 INFO L471 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) [2021-11-03 04:01:37,630 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 720 transitions. [2021-11-03 04:01:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:01:37,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:37,631 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:01:37,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:37,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:37,845 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash 890510813, now seen corresponding path program 1 times [2021-11-03 04:01:37,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:37,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841976042] [2021-11-03 04:01:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:37,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:37,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:37,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:01:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:37,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:01:37,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:37,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:38,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:38,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841976042] [2021-11-03 04:01:38,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841976042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:38,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:38,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:01:38,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741844297] [2021-11-03 04:01:38,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:38,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:38,028 INFO L87 Difference]: Start difference. First operand 648 states and 720 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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) [2021-11-03 04:01:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:38,141 INFO L93 Difference]: Finished difference Result 1239 states and 1372 transitions. [2021-11-03 04:01:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:01:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 6 [2021-11-03 04:01:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:38,150 INFO L225 Difference]: With dead ends: 1239 [2021-11-03 04:01:38,151 INFO L226 Difference]: Without dead ends: 1239 [2021-11-03 04:01:38,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-03 04:01:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 979. [2021-11-03 04:01:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 704 states have (on average 1.9488636363636365) internal successors, (1372), 978 states have internal predecessors, (1372), 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) [2021-11-03 04:01:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1372 transitions. [2021-11-03 04:01:38,189 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1372 transitions. Word has length 6 [2021-11-03 04:01:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:38,190 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1372 transitions. [2021-11-03 04:01:38,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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) [2021-11-03 04:01:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1372 transitions. [2021-11-03 04:01:38,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:01:38,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:38,192 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:38,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:38,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:38,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 04:01:38,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:38,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239652914] [2021-11-03 04:01:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:38,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:38,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:38,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:38,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:01:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:38,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:01:38,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:38,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:38,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:38,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239652914] [2021-11-03 04:01:38,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239652914] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:38,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:38,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:01:38,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360919289] [2021-11-03 04:01:38,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:38,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:38,655 INFO L87 Difference]: Start difference. First operand 979 states and 1372 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:38,697 INFO L93 Difference]: Finished difference Result 919 states and 1286 transitions. [2021-11-03 04:01:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:01:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:01:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:38,706 INFO L225 Difference]: With dead ends: 919 [2021-11-03 04:01:38,706 INFO L226 Difference]: Without dead ends: 919 [2021-11-03 04:01:38,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:38,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-03 04:01:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2021-11-03 04:01:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 668 states have (on average 1.9251497005988023) internal successors, (1286), 918 states have internal predecessors, (1286), 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) [2021-11-03 04:01:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1286 transitions. [2021-11-03 04:01:38,750 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1286 transitions. Word has length 11 [2021-11-03 04:01:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:38,750 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1286 transitions. [2021-11-03 04:01:38,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1286 transitions. [2021-11-03 04:01:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:01:38,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:38,752 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:38,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:38,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:38,968 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 04:01:38,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:38,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968803070] [2021-11-03 04:01:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:38,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:38,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:38,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:39,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:01:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:39,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:01:39,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:39,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:39,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:39,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968803070] [2021-11-03 04:01:39,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968803070] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:39,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:39,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:01:39,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998929492] [2021-11-03 04:01:39,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:01:39,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:01:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:01:39,248 INFO L87 Difference]: Start difference. First operand 919 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-11-03 04:01:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:39,357 INFO L93 Difference]: Finished difference Result 891 states and 1230 transitions. [2021-11-03 04:01:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:01:39,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 13 [2021-11-03 04:01:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:39,364 INFO L225 Difference]: With dead ends: 891 [2021-11-03 04:01:39,366 INFO L226 Difference]: Without dead ends: 891 [2021-11-03 04:01:39,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:01:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-11-03 04:01:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2021-11-03 04:01:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 652 states have (on average 1.883435582822086) internal successors, (1228), 888 states have internal predecessors, (1228), 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) [2021-11-03 04:01:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1228 transitions. [2021-11-03 04:01:39,400 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1228 transitions. Word has length 13 [2021-11-03 04:01:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:39,401 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1228 transitions. [2021-11-03 04:01:39,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-11-03 04:01:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1228 transitions. [2021-11-03 04:01:39,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:01:39,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:39,404 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:01:39,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:01:39,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:39,619 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:39,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 04:01:39,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:39,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418851898] [2021-11-03 04:01:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:39,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:39,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:39,622 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:39,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:01:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:39,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:01:39,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:39,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:01:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:39,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:40,081 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:40,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418851898] [2021-11-03 04:01:40,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418851898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:40,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:40,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:01:40,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551444152] [2021-11-03 04:01:40,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:40,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:40,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:40,085 INFO L87 Difference]: Start difference. First operand 889 states and 1228 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-03 04:01:41,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:41,633 INFO L93 Difference]: Finished difference Result 959 states and 1305 transitions. [2021-11-03 04:01:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:01:41,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-03 04:01:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:41,642 INFO L225 Difference]: With dead ends: 959 [2021-11-03 04:01:41,642 INFO L226 Difference]: Without dead ends: 959 [2021-11-03 04:01:41,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:01:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-03 04:01:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 885. [2021-11-03 04:01:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 652 states have (on average 1.8711656441717792) internal successors, (1220), 884 states have internal predecessors, (1220), 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) [2021-11-03 04:01:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1220 transitions. [2021-11-03 04:01:41,670 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1220 transitions. Word has length 27 [2021-11-03 04:01:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:41,670 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1220 transitions. [2021-11-03 04:01:41,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-03 04:01:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1220 transitions. [2021-11-03 04:01:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:01:41,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:41,672 INFO L513 BasicCegarLoop]: 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] [2021-11-03 04:01:41,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:41,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:41,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:41,892 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 04:01:41,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:41,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624498496] [2021-11-03 04:01:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:41,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:41,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:41,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:41,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:01:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:42,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:01:42,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:42,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:01:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:42,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:42,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:42,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624498496] [2021-11-03 04:01:42,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624498496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:42,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:42,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:01:42,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586055784] [2021-11-03 04:01:42,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:01:42,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:42,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:01:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:01:42,892 INFO L87 Difference]: Start difference. First operand 885 states and 1220 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2021-11-03 04:01:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:46,653 INFO L93 Difference]: Finished difference Result 1006 states and 1323 transitions. [2021-11-03 04:01:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:01:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 27 [2021-11-03 04:01:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:46,661 INFO L225 Difference]: With dead ends: 1006 [2021-11-03 04:01:46,661 INFO L226 Difference]: Without dead ends: 1006 [2021-11-03 04:01:46,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:01:46,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-03 04:01:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 881. [2021-11-03 04:01:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 652 states have (on average 1.8588957055214723) internal successors, (1212), 880 states have internal predecessors, (1212), 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) [2021-11-03 04:01:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1212 transitions. [2021-11-03 04:01:46,690 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1212 transitions. Word has length 27 [2021-11-03 04:01:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:46,690 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1212 transitions. [2021-11-03 04:01:46,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2021-11-03 04:01:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1212 transitions. [2021-11-03 04:01:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:01:46,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:46,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:46,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:46,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:46,910 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:46,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 04:01:46,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:46,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977466455] [2021-11-03 04:01:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:46,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:46,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:46,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:46,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:01:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:47,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:01:47,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:47,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:47,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:47,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977466455] [2021-11-03 04:01:47,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977466455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:47,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:47,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:01:47,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572135889] [2021-11-03 04:01:47,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:01:47,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:01:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:01:47,477 INFO L87 Difference]: Start difference. First operand 881 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-03 04:01:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:47,549 INFO L93 Difference]: Finished difference Result 869 states and 1192 transitions. [2021-11-03 04:01:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:01:47,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-03 04:01:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:47,556 INFO L225 Difference]: With dead ends: 869 [2021-11-03 04:01:47,556 INFO L226 Difference]: Without dead ends: 869 [2021-11-03 04:01:47,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:01:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-11-03 04:01:47,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2021-11-03 04:01:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 640 states have (on average 1.8625) internal successors, (1192), 868 states have internal predecessors, (1192), 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) [2021-11-03 04:01:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1192 transitions. [2021-11-03 04:01:47,580 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1192 transitions. Word has length 42 [2021-11-03 04:01:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:47,581 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1192 transitions. [2021-11-03 04:01:47,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-03 04:01:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1192 transitions. [2021-11-03 04:01:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:01:47,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:47,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:47,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:47,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:47,798 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 04:01:47,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:47,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127403842] [2021-11-03 04:01:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:47,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:47,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:01:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:48,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:01:48,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:48,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:49,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:49,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127403842] [2021-11-03 04:01:49,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127403842] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:49,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:49,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:01:49,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790422017] [2021-11-03 04:01:49,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:01:49,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:01:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:49,058 INFO L87 Difference]: Start difference. First operand 869 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-03 04:01:49,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:49,147 INFO L93 Difference]: Finished difference Result 819 states and 1087 transitions. [2021-11-03 04:01:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:01:49,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-03 04:01:49,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:49,156 INFO L225 Difference]: With dead ends: 819 [2021-11-03 04:01:49,156 INFO L226 Difference]: Without dead ends: 819 [2021-11-03 04:01:49,156 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:01:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-03 04:01:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2021-11-03 04:01:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 590 states have (on average 1.8423728813559321) internal successors, (1087), 818 states have internal predecessors, (1087), 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) [2021-11-03 04:01:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1087 transitions. [2021-11-03 04:01:49,173 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1087 transitions. Word has length 50 [2021-11-03 04:01:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:49,174 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1087 transitions. [2021-11-03 04:01:49,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-03 04:01:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1087 transitions. [2021-11-03 04:01:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:01:49,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:49,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:49,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:49,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:49,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:01:49,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:49,389 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 04:01:49,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:49,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325975195] [2021-11-03 04:01:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:49,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:49,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:49,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:49,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:01:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:49,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:01:49,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:49,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:01:49,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:01:50,806 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:01:50,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-03 04:01:50,815 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:01:50,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 22 [2021-11-03 04:01:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:50,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:01:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:56,202 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:56,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325975195] [2021-11-03 04:01:56,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325975195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:56,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:56,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:01:56,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371030262] [2021-11-03 04:01:56,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:01:56,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:01:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 04:01:56,206 INFO L87 Difference]: Start difference. First operand 819 states and 1087 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-03 04:02:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:06,332 INFO L93 Difference]: Finished difference Result 794 states and 1025 transitions. [2021-11-03 04:02:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:02:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-03 04:02:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:06,340 INFO L225 Difference]: With dead ends: 794 [2021-11-03 04:02:06,340 INFO L226 Difference]: Without dead ends: 794 [2021-11-03 04:02:06,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 04:02:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-03 04:02:06,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 749. [2021-11-03 04:02:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 558 states have (on average 1.6935483870967742) internal successors, (945), 748 states have internal predecessors, (945), 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) [2021-11-03 04:02:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 945 transitions. [2021-11-03 04:02:06,361 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 945 transitions. Word has length 53 [2021-11-03 04:02:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:06,362 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 945 transitions. [2021-11-03 04:02:06,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-03 04:02:06,363 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 945 transitions. [2021-11-03 04:02:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:02:06,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:06,364 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:06,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:06,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:06,579 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:02:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 04:02:06,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:06,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897672530] [2021-11-03 04:02:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:06,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:06,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:06,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:06,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:02:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:07,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:02:07,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:07,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:02:07,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-03 04:02:07,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-03 04:02:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:07,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:07,535 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:07,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897672530] [2021-11-03 04:02:07,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897672530] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:07,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:07,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:02:07,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862088772] [2021-11-03 04:02:07,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:02:07,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:07,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:02:07,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:02:07,538 INFO L87 Difference]: Start difference. First operand 749 states and 945 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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) [2021-11-03 04:02:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:11,322 INFO L93 Difference]: Finished difference Result 1018 states and 1234 transitions. [2021-11-03 04:02:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:02:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2021-11-03 04:02:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:11,330 INFO L225 Difference]: With dead ends: 1018 [2021-11-03 04:02:11,330 INFO L226 Difference]: Without dead ends: 1018 [2021-11-03 04:02:11,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:02:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-03 04:02:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 748. [2021-11-03 04:02:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 558 states have (on average 1.689964157706093) internal successors, (943), 747 states have internal predecessors, (943), 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) [2021-11-03 04:02:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 943 transitions. [2021-11-03 04:02:11,353 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 943 transitions. Word has length 59 [2021-11-03 04:02:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:11,353 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 943 transitions. [2021-11-03 04:02:11,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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) [2021-11-03 04:02:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 943 transitions. [2021-11-03 04:02:11,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:02:11,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:11,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:11,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:11,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:11,574 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:02:11,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:11,575 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 04:02:11,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:11,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15771722] [2021-11-03 04:02:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:11,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:11,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:11,576 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:11,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:02:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:12,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:02:12,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:12,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-03 04:02:12,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-03 04:02:12,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:02:12,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-03 04:02:12,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-03 04:02:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:12,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:13,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:13,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15771722] [2021-11-03 04:02:13,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15771722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:13,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:13,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:02:13,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990039030] [2021-11-03 04:02:13,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:02:13,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:13,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:02:13,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:02:13,020 INFO L87 Difference]: Start difference. First operand 748 states and 943 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-03 04:02:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:23,755 INFO L93 Difference]: Finished difference Result 889 states and 1101 transitions. [2021-11-03 04:02:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:02:23,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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 60 [2021-11-03 04:02:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:23,762 INFO L225 Difference]: With dead ends: 889 [2021-11-03 04:02:23,762 INFO L226 Difference]: Without dead ends: 889 [2021-11-03 04:02:23,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:02:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-11-03 04:02:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 747. [2021-11-03 04:02:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 558 states have (on average 1.6863799283154122) internal successors, (941), 746 states have internal predecessors, (941), 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) [2021-11-03 04:02:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 941 transitions. [2021-11-03 04:02:23,785 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 941 transitions. Word has length 60 [2021-11-03 04:02:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:23,785 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 941 transitions. [2021-11-03 04:02:23,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-03 04:02:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 941 transitions. [2021-11-03 04:02:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:02:23,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:23,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:23,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:02:24,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:24,016 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:02:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 04:02:24,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:24,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883964170] [2021-11-03 04:02:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:24,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:24,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:24,020 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:24,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:02:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:24,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:02:24,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:24,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:24,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:24,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883964170] [2021-11-03 04:02:24,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883964170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:24,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:24,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:02:24,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888628616] [2021-11-03 04:02:24,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:02:24,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:24,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:02:24,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:02:24,862 INFO L87 Difference]: Start difference. First operand 747 states and 941 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-03 04:02:25,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:25,029 INFO L93 Difference]: Finished difference Result 1005 states and 1214 transitions. [2021-11-03 04:02:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:02:25,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 64 [2021-11-03 04:02:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:25,037 INFO L225 Difference]: With dead ends: 1005 [2021-11-03 04:02:25,037 INFO L226 Difference]: Without dead ends: 1005 [2021-11-03 04:02:25,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:02:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2021-11-03 04:02:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 753. [2021-11-03 04:02:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 564 states have (on average 1.679078014184397) internal successors, (947), 752 states have internal predecessors, (947), 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) [2021-11-03 04:02:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 947 transitions. [2021-11-03 04:02:25,059 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 947 transitions. Word has length 64 [2021-11-03 04:02:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:25,060 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 947 transitions. [2021-11-03 04:02:25,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-03 04:02:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 947 transitions. [2021-11-03 04:02:25,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:02:25,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:25,061 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:25,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:25,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:25,275 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:02:25,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 04:02:25,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:25,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013251305] [2021-11-03 04:02:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:25,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:25,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:25,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:25,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:02:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:25,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:02:25,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:26,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:26,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:26,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013251305] [2021-11-03 04:02:26,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013251305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:26,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [860451026] [2021-11-03 04:02:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:26,318 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:02:26,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:02:26,324 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:02:26,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 04:02:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:27,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:02:27,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:27,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:27,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [860451026] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:27,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114656322] [2021-11-03 04:02:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:27,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:02:27,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:02:27,495 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:02:27,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 04:02:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:28,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:02:28,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:28,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:28,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114656322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:28,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:02:28,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:02:28,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404718284] [2021-11-03 04:02:28,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:02:28,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:02:28,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:02:28,525 INFO L87 Difference]: Start difference. First operand 753 states and 947 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-03 04:02:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:29,074 INFO L93 Difference]: Finished difference Result 1017 states and 1226 transitions. [2021-11-03 04:02:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:02:29,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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 66 [2021-11-03 04:02:29,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:29,087 INFO L225 Difference]: With dead ends: 1017 [2021-11-03 04:02:29,087 INFO L226 Difference]: Without dead ends: 1017 [2021-11-03 04:02:29,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:02:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-11-03 04:02:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 765. [2021-11-03 04:02:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 576 states have (on average 1.6649305555555556) internal successors, (959), 764 states have internal predecessors, (959), 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) [2021-11-03 04:02:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 959 transitions. [2021-11-03 04:02:29,109 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 959 transitions. Word has length 66 [2021-11-03 04:02:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:29,109 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 959 transitions. [2021-11-03 04:02:29,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-03 04:02:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 959 transitions. [2021-11-03 04:02:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:02:29,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:29,111 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:29,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:29,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:29,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:29,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:02:29,729 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:02:29,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:29,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 04:02:29,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:29,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979206880] [2021-11-03 04:02:29,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:02:29,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:29,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:29,732 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:29,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:02:30,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:02:30,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:02:30,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:02:30,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:30,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:31,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:31,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979206880] [2021-11-03 04:02:31,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979206880] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:31,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [333713803] [2021-11-03 04:02:31,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:02:31,554 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:02:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:02:31,559 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:02:31,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 04:02:33,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:02:33,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:02:33,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:02:33,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:33,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:33,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [333713803] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:02:33,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839273071] [2021-11-03 04:02:33,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:02:33,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:02:33,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:02:33,717 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:02:33,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 04:02:49,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:02:49,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:02:49,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 04:02:49,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:50,170 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:02:50,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 19 [2021-11-03 04:02:50,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-03 04:02:50,665 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:02:50,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 26 [2021-11-03 04:02:50,908 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:02:50,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 04:02:52,203 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:02:52,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 04:02:52,416 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:02:52,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 04:02:56,401 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:02:56,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 04:02:59,951 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:02:59,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 47 [2021-11-03 04:03:02,253 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 04:03:02,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 27 [2021-11-03 04:03:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:03:02,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:03:52,155 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_72| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_66| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_72| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145_66| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))))))) (_ bv1 1)))) is different from false [2021-11-03 04:03:59,114 INFO L354 Elim1Store]: treesize reduction 5, result has 87.2 percent of original size [2021-11-03 04:03:59,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 56 [2021-11-03 04:04:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 5 refuted. 5 times theorem prover too weak. 2 trivial. 6 not checked. [2021-11-03 04:04:13,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839273071] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:04:13,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:04:13,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 12] total 37 [2021-11-03 04:04:13,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544050157] [2021-11-03 04:04:13,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-03 04:04:13,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:04:13,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-03 04:04:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1075, Unknown=19, NotChecked=68, Total=1332 [2021-11-03 04:04:13,619 INFO L87 Difference]: Start difference. First operand 765 states and 959 transitions. Second operand has 37 states, 37 states have (on average 5.594594594594595) internal successors, (207), 37 states have internal predecessors, (207), 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) [2021-11-03 04:04:23,117 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2021-11-03 04:05:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:05:11,641 INFO L93 Difference]: Finished difference Result 1047 states and 1256 transitions. [2021-11-03 04:05:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-03 04:05:11,642 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.594594594594595) internal successors, (207), 37 states have internal predecessors, (207), 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 70 [2021-11-03 04:05:11,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:05:11,649 INFO L225 Difference]: With dead ends: 1047 [2021-11-03 04:05:11,649 INFO L226 Difference]: Without dead ends: 1047 [2021-11-03 04:05:11,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 373 SyntacticMatches, 8 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 95.8s TimeCoverageRelationStatistics Valid=1158, Invalid=4677, Unknown=21, NotChecked=150, Total=6006 [2021-11-03 04:05:11,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-11-03 04:05:11,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 788. [2021-11-03 04:05:11,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 600 states have (on average 1.635) internal successors, (981), 787 states have internal predecessors, (981), 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) [2021-11-03 04:05:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 981 transitions. [2021-11-03 04:05:11,671 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 981 transitions. Word has length 70 [2021-11-03 04:05:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:11,672 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 981 transitions. [2021-11-03 04:05:11,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.594594594594595) internal successors, (207), 37 states have internal predecessors, (207), 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) [2021-11-03 04:05:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 981 transitions. [2021-11-03 04:05:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 04:05:11,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:11,673 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:11,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:11,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:12,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:12,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:05:12,278 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:05:12,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:12,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996129, now seen corresponding path program 1 times [2021-11-03 04:05:12,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:05:12,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672025101] [2021-11-03 04:05:12,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:12,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:05:12,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:05:12,282 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:05:12,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:05:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:13,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:05:13,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:13,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:15,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:05:15,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672025101] [2021-11-03 04:05:15,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672025101] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:05:15,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567976697] [2021-11-03 04:05:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:15,547 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:05:15,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:05:15,555 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:05:15,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:05:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:16,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:05:16,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:17,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:17,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [567976697] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:05:17,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907400812] [2021-11-03 04:05:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:05:17,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:05:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:05:17,415 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:05:17,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-03 04:05:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:05:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 04:05:18,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:18,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:19,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907400812] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:05:19,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:05:19,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2021-11-03 04:05:19,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142062355] [2021-11-03 04:05:19,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 04:05:19,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:05:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 04:05:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 04:05:19,077 INFO L87 Difference]: Start difference. First operand 788 states and 981 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-03 04:05:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:05:36,497 INFO L93 Difference]: Finished difference Result 1088 states and 1296 transitions. [2021-11-03 04:05:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 04:05:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 78 [2021-11-03 04:05:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:05:36,502 INFO L225 Difference]: With dead ends: 1088 [2021-11-03 04:05:36,502 INFO L226 Difference]: Without dead ends: 1088 [2021-11-03 04:05:36,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1446, Invalid=2586, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 04:05:36,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-03 04:05:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 836. [2021-11-03 04:05:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 648 states have (on average 1.587962962962963) internal successors, (1029), 835 states have internal predecessors, (1029), 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) [2021-11-03 04:05:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1029 transitions. [2021-11-03 04:05:36,519 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1029 transitions. Word has length 78 [2021-11-03 04:05:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:05:36,519 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1029 transitions. [2021-11-03 04:05:36,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-03 04:05:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1029 transitions. [2021-11-03 04:05:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 04:05:36,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:05:36,521 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:05:36,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:36,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:36,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 04:05:37,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:05:37,122 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 04:05:37,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:05:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2005712417, now seen corresponding path program 2 times [2021-11-03 04:05:37,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:05:37,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322158501] [2021-11-03 04:05:37,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:05:37,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:05:37,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:05:37,125 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:05:37,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 04:05:38,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:05:38,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:05:38,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 04:05:38,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:40,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:45,340 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:05:45,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322158501] [2021-11-03 04:05:45,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322158501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:05:45,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822521512] [2021-11-03 04:05:45,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:05:45,340 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:05:45,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:05:45,341 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:05:45,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-03 04:05:47,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:05:47,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:05:47,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 04:05:47,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:05:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:47,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:05:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:05:48,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822521512] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:05:48,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715341423] [2021-11-03 04:05:48,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:05:48,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:05:48,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:05:48,208 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:05:48,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e094c809-db62-4ede-b993-d0b2ec076795/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-03 04:06:09,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:06:09,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:06:09,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-03 04:06:09,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:06:10,153 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:06:10,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 18 [2021-11-03 04:06:10,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-03 04:06:10,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:06:10,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-03 04:06:11,179 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 04:06:11,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-03 04:06:11,222 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:06:11,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-03 04:06:11,804 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:11,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:16,401 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:16,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:17,015 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:17,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:17,101 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:17,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:19,876 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:19,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:21,725 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:21,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:22,221 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:22,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:24,045 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:24,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:27,867 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:27,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:29,894 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:29,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:32,514 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:32,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:35,870 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:35,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:39,097 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:39,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:41,893 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:41,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:42,483 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:42,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:46,534 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:46,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:47,032 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:47,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:49,006 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:49,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:52,678 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:52,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:54,669 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:54,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:56,111 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:56,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:06:56,973 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:06:56,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:06:58,516 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:06:58,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:02,916 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:02,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:04,664 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:04,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:04,746 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:04,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:07,040 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:07,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:07,130 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:07,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:09,276 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:09,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:10,137 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:10,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:10,610 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:10,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:10,702 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:10,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:12,773 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:12,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:14,069 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:14,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:18,509 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:18,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:18,599 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:18,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:25,528 WARN L207 SmtUtils]: Spent 6.45 s on a formula simplification. DAG size of input: 40 DAG size of output: 18 [2021-11-03 04:07:25,529 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:25,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:26,901 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:26,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:27,352 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:27,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:29,566 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:29,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:32,484 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:32,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:32,549 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:32,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:34,721 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:34,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:34,786 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:34,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:36,691 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:36,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:36,754 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:36,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:37,859 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:37,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:38,906 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:38,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:40,761 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:40,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:45,061 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:45,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:48,372 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:48,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:48,435 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:48,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:50,687 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:50,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:53,184 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:53,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:55,029 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:07:55,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:07:57,795 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:57,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:07:58,314 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:07:58,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-03 04:07:58,372 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-03 04:07:58,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 101 [2021-11-03 04:07:59,116 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 04:07:59,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-03 04:07:59,131 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 04:07:59,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-03 04:07:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-03 04:07:59,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:08:27,020 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1) (bvadd v_subst_2 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse2 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse4 (bvadd v_subst_1 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3))) c_ULTIMATE.start_main_~user~0.base) .cse5) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse5)))))) is different from false [2021-11-03 04:09:22,228 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse2 (bvadd v_subst_7 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1))) c_ULTIMATE.start_main_~user~0.base) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5) (bvadd v_subst_8 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd (_ bv20 32) .cse4))))) is different from false [2021-11-03 04:12:08,869 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_21 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse2 (bvadd v_subst_21 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1))) c_ULTIMATE.start_main_~user~0.base) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_22 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5) (bvadd v_subst_22 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd .cse4 (_ bv20 32)))))) is different from false [2021-11-03 04:12:18,428 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_25 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse2 (bvadd v_subst_25 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1))) c_ULTIMATE.start_main_~user~0.base) .cse3) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32)) (v_subst_26 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5) (bvadd v_subst_26 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd (_ bv20 32) .cse4))))) is different from false