./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.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_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/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_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/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_fd7e524c-470f-46cc-953e-05aaa1a5c301/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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:33,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:33,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:33,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:33,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:33,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:33,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:33,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:33,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:33,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:33,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:33,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:33,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:33,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:33,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:33,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:33,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:33,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:33,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:33,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:33,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:33,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:33,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:33,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:33,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:33,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:33,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:33,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:33,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:33,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:33,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:33,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:33,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:33,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:33,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:33,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:33,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:33,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:33,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:33,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:33,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:33,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:25:34,044 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:34,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:34,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:34,054 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:34,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:34,054 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:34,055 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:25:34,055 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:34,055 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:34,055 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:25:34,056 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:25:34,057 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:34,057 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:25:34,057 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:25:34,057 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:25:34,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:25:34,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:25:34,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:34,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:25:34,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:25:34,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:25:34,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:25:34,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:34,060 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:25:34,060 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:25:34,060 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:25:34,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:34,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:34,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:25:34,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:34,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:34,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:34,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:34,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:34,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:34,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:25:34,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:25:34,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:34,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:34,064 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2021-11-03 04:25:34,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:34,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:34,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:34,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:34,431 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:34,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-03 04:25:34,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/18a199cb9/c3529019a03d419f921a1623cad1a536/FLAGcc2e9588e [2021-11-03 04:25:35,079 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:35,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-03 04:25:35,117 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/18a199cb9/c3529019a03d419f921a1623cad1a536/FLAGcc2e9588e [2021-11-03 04:25:35,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/18a199cb9/c3529019a03d419f921a1623cad1a536 [2021-11-03 04:25:35,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:35,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:35,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:35,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:35,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:35,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:35" (1/1) ... [2021-11-03 04:25:35,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d49cc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:35, skipping insertion in model container [2021-11-03 04:25:35,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:35" (1/1) ... [2021-11-03 04:25:35,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:35,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:36,053 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-03 04:25:36,070 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-03 04:25:36,223 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-03 04:25:36,224 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-03 04:25:36,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:36,264 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 04:25:36,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@250d351c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:36, skipping insertion in model container [2021-11-03 04:25:36,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:36,265 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:25:36,267 INFO L168 Benchmark]: Toolchain (without parser) took 936.87 ms. Allocated memory is still 121.6 MB. Free memory was 84.3 MB in the beginning and 84.6 MB in the end (delta: -327.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:36,268 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 121.6 MB. Free memory was 95.3 MB in the beginning and 95.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:36,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 932.05 ms. Allocated memory is still 121.6 MB. Free memory was 84.0 MB in the beginning and 84.6 MB in the end (delta: -622.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:36,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 121.6 MB. Free memory was 95.3 MB in the beginning and 95.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 932.05 ms. Allocated memory is still 121.6 MB. Free memory was 84.0 MB in the beginning and 84.6 MB in the end (delta: -622.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/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_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/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_fd7e524c-470f-46cc-953e-05aaa1a5c301/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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:38,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:38,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:38,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:38,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:38,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:38,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:38,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:38,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:38,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:38,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:38,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:38,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:38,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:38,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:38,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:38,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:38,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:38,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:38,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:38,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:38,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:38,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:38,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:38,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:38,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:38,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:38,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:38,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:38,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:38,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:38,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:38,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:38,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:38,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:38,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:38,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:38,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:38,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:38,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:38,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:38,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:25:38,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:38,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:38,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:38,731 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:38,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:38,732 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:38,732 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:38,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:38,733 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:38,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:25:38,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:25:38,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:38,736 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:25:38,736 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:25:38,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:25:38,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:25:38,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:38,737 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:25:38,737 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:25:38,738 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:25:38,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:38,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:38,738 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:25:38,739 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:25:38,739 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:25:38,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:38,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:38,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:25:38,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:38,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:38,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:38,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:38,741 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:25:38,741 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:25:38,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:38,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:38,742 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2021-11-03 04:25:39,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:39,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:39,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:39,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:39,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:39,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-03 04:25:39,196 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/377fd3489/e53863e7648545218c3f5e3d7645f836/FLAGc13ca25e8 [2021-11-03 04:25:39,867 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:39,867 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2021-11-03 04:25:39,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/377fd3489/e53863e7648545218c3f5e3d7645f836/FLAGc13ca25e8 [2021-11-03 04:25:40,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/data/377fd3489/e53863e7648545218c3f5e3d7645f836 [2021-11-03 04:25:40,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:40,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:40,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:40,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:40,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:40,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:40" (1/1) ... [2021-11-03 04:25:40,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d161f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:40, skipping insertion in model container [2021-11-03 04:25:40,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:40" (1/1) ... [2021-11-03 04:25:40,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:40,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:40,842 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-03 04:25:40,853 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-03 04:25:40,968 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-03 04:25:40,969 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-03 04:25:40,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:41,004 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:25:41,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:41,059 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-03 04:25:41,061 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-03 04:25:41,177 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-03 04:25:41,178 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-03 04:25:41,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:41,209 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:25:41,245 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2021-11-03 04:25:41,262 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2021-11-03 04:25:41,310 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2021-11-03 04:25:41,330 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_fd7e524c-470f-46cc-953e-05aaa1a5c301/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2021-11-03 04:25:41,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:41,419 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:25:41,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41 WrapperNode [2021-11-03 04:25:41,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:41,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:41,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:25:41,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:25:41,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:41,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:25:41,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:25:41,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:25:41,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:25:41,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:25:41,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:25:41,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:25:41,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (1/1) ... [2021-11-03 04:25:41,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:41,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:25:41,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:25:41,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:25:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:25:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:25:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:25:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:25:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:25:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:25:41,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:25:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:25:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:25:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:25:41,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:25:41,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:25:48,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:25:48,096 INFO L299 CfgBuilder]: Removed 124 assume(true) statements. [2021-11-03 04:25:48,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:48 BoogieIcfgContainer [2021-11-03 04:25:48,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:25:48,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:25:48,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:25:48,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:25:48,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:25:40" (1/3) ... [2021-11-03 04:25:48,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee8d56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:48, skipping insertion in model container [2021-11-03 04:25:48,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:41" (2/3) ... [2021-11-03 04:25:48,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee8d56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:48, skipping insertion in model container [2021-11-03 04:25:48,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:48" (3/3) ... [2021-11-03 04:25:48,114 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2021-11-03 04:25:48,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:25:48,120 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 677 error locations. [2021-11-03 04:25:48,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:25:48,191 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 04:25:48,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 677 error locations. [2021-11-03 04:25:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 1373 states, 695 states have (on average 2.20431654676259) internal successors, (1532), 1372 states have internal predecessors, (1532), 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 04:25:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:25:48,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:48,252 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:25:48,253 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:25:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 04:25:48,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:48,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147459205] [2021-11-03 04:25:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:48,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:48,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:48,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:25:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:48,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:25:48,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:48,611 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 04:25:48,634 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 04:25:48,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:48,660 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 04:25:48,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:48,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147459205] [2021-11-03 04:25:48,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147459205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:48,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:48,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:25:48,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040150066] [2021-11-03 04:25:48,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:25:48,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:48,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:25:48,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:25:48,702 INFO L87 Difference]: Start difference. First operand has 1373 states, 695 states have (on average 2.20431654676259) internal successors, (1532), 1372 states have internal predecessors, (1532), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:51,720 INFO L93 Difference]: Finished difference Result 1547 states and 1625 transitions. [2021-11-03 04:25:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:25:51,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 04:25:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:51,755 INFO L225 Difference]: With dead ends: 1547 [2021-11-03 04:25:51,755 INFO L226 Difference]: Without dead ends: 1545 [2021-11-03 04:25:51,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 04:25:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2021-11-03 04:25:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1345. [2021-11-03 04:25:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 687 states have (on average 2.059679767103348) internal successors, (1415), 1344 states have internal predecessors, (1415), 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 04:25:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1415 transitions. [2021-11-03 04:25:51,896 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1415 transitions. Word has length 3 [2021-11-03 04:25:51,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:51,896 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 1415 transitions. [2021-11-03 04:25:51,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:51,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1415 transitions. [2021-11-03 04:25:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:25:51,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:51,898 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:25:51,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:25:52,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:52,110 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:25:52,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 04:25:52,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:52,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124515740] [2021-11-03 04:25:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:52,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:52,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:52,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:52,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:25:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:25:52,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:52,323 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 04:25:52,340 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 04:25:52,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:52,398 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 04:25:52,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:52,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124515740] [2021-11-03 04:25:52,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124515740] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:52,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:52,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:25:52,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889922389] [2021-11-03 04:25:52,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:25:52,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:52,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:25:52,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:52,403 INFO L87 Difference]: Start difference. First operand 1345 states and 1415 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 04:25:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:58,704 INFO L93 Difference]: Finished difference Result 2072 states and 2185 transitions. [2021-11-03 04:25:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:25:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 3 [2021-11-03 04:25:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:58,716 INFO L225 Difference]: With dead ends: 2072 [2021-11-03 04:25:58,717 INFO L226 Difference]: Without dead ends: 2072 [2021-11-03 04:25:58,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 04:25:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-11-03 04:25:58,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1381. [2021-11-03 04:25:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 732 states have (on average 2.0423497267759565) internal successors, (1495), 1380 states have internal predecessors, (1495), 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 04:25:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1495 transitions. [2021-11-03 04:25:58,759 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1495 transitions. Word has length 3 [2021-11-03 04:25:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:58,759 INFO L470 AbstractCegarLoop]: Abstraction has 1381 states and 1495 transitions. [2021-11-03 04:25:58,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 04:25:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1495 transitions. [2021-11-03 04:25:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:25:58,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:58,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:58,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:25:58,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:58,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:25:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648752, now seen corresponding path program 1 times [2021-11-03 04:25:58,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:58,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279458397] [2021-11-03 04:25:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:58,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:58,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:58,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:58,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:25:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:59,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:25:59,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:59,196 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 04:25:59,262 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 04:25:59,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:59,296 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 04:25:59,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:59,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279458397] [2021-11-03 04:25:59,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279458397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:59,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:59,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:25:59,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917487200] [2021-11-03 04:25:59,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:25:59,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:25:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:59,300 INFO L87 Difference]: Start difference. First operand 1381 states and 1495 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:03,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:03,034 INFO L93 Difference]: Finished difference Result 1940 states and 2089 transitions. [2021-11-03 04:26:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:03,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:26:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:03,045 INFO L225 Difference]: With dead ends: 1940 [2021-11-03 04:26:03,045 INFO L226 Difference]: Without dead ends: 1940 [2021-11-03 04:26:03,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 04:26:03,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2021-11-03 04:26:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1333. [2021-11-03 04:26:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 732 states have (on average 1.9726775956284153) internal successors, (1444), 1332 states have internal predecessors, (1444), 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 04:26:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1444 transitions. [2021-11-03 04:26:03,080 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1444 transitions. Word has length 9 [2021-11-03 04:26:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:03,082 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 1444 transitions. [2021-11-03 04:26:03,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1444 transitions. [2021-11-03 04:26:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:26:03,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:03,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:03,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 04:26:03,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:03,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648753, now seen corresponding path program 1 times [2021-11-03 04:26:03,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:03,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847488801] [2021-11-03 04:26:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:03,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:03,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:03,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:26:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:03,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:26:03,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:03,512 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 04:26:03,589 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 04:26:03,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:03,772 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 04:26:03,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:03,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847488801] [2021-11-03 04:26:03,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847488801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:03,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:03,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:26:03,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731357814] [2021-11-03 04:26:03,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:26:03,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:26:03,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:26:03,776 INFO L87 Difference]: Start difference. First operand 1333 states and 1444 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:13,213 INFO L93 Difference]: Finished difference Result 2031 states and 2145 transitions. [2021-11-03 04:26:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:13,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:26:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:13,226 INFO L225 Difference]: With dead ends: 2031 [2021-11-03 04:26:13,227 INFO L226 Difference]: Without dead ends: 2031 [2021-11-03 04:26:13,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:26:13,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-11-03 04:26:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1323. [2021-11-03 04:26:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 732 states have (on average 1.9549180327868851) internal successors, (1431), 1322 states have internal predecessors, (1431), 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 04:26:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1431 transitions. [2021-11-03 04:26:13,267 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1431 transitions. Word has length 9 [2021-11-03 04:26:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:13,268 INFO L470 AbstractCegarLoop]: Abstraction has 1323 states and 1431 transitions. [2021-11-03 04:26:13,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1431 transitions. [2021-11-03 04:26:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:26:13,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:13,270 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:13,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:13,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:13,484 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr555ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:13,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:13,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2075071052, now seen corresponding path program 1 times [2021-11-03 04:26:13,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:13,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61746932] [2021-11-03 04:26:13,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:13,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:13,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:13,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:13,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:26:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:13,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:26:13,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:13,738 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 04:26:13,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:13,834 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 04:26:13,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:13,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61746932] [2021-11-03 04:26:13,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61746932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:13,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:13,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:26:13,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740623119] [2021-11-03 04:26:13,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:13,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:13,838 INFO L87 Difference]: Start difference. First operand 1323 states and 1431 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:14,711 INFO L93 Difference]: Finished difference Result 2027 states and 2177 transitions. [2021-11-03 04:26:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:26:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:14,725 INFO L225 Difference]: With dead ends: 2027 [2021-11-03 04:26:14,725 INFO L226 Difference]: Without dead ends: 2027 [2021-11-03 04:26:14,725 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-11-03 04:26:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1571. [2021-11-03 04:26:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 980 states have (on average 1.9346938775510205) internal successors, (1896), 1570 states have internal predecessors, (1896), 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 04:26:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 1896 transitions. [2021-11-03 04:26:14,766 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 1896 transitions. Word has length 11 [2021-11-03 04:26:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:14,766 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 1896 transitions. [2021-11-03 04:26:14,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 1896 transitions. [2021-11-03 04:26:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:26:14,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:14,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:14,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:14,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:14,978 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:14,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:14,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1895000204, now seen corresponding path program 1 times [2021-11-03 04:26:14,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:14,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853048652] [2021-11-03 04:26:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:14,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:14,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:15,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:26:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:15,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:26:15,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:15,209 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 04:26:15,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:15,246 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 04:26:15,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:15,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853048652] [2021-11-03 04:26:15,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853048652] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:15,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:15,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:15,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726073379] [2021-11-03 04:26:15,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:15,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:15,249 INFO L87 Difference]: Start difference. First operand 1571 states and 1896 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 04:26:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:15,298 INFO L93 Difference]: Finished difference Result 1775 states and 2089 transitions. [2021-11-03 04:26:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:26:15,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 04:26:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:15,308 INFO L225 Difference]: With dead ends: 1775 [2021-11-03 04:26:15,308 INFO L226 Difference]: Without dead ends: 1775 [2021-11-03 04:26:15,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 04:26:15,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2021-11-03 04:26:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1511. [2021-11-03 04:26:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 944 states have (on average 1.9173728813559323) internal successors, (1810), 1510 states have internal predecessors, (1810), 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 04:26:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1810 transitions. [2021-11-03 04:26:15,343 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1810 transitions. Word has length 13 [2021-11-03 04:26:15,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:15,344 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 1810 transitions. [2021-11-03 04:26:15,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 04:26:15,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1810 transitions. [2021-11-03 04:26:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:26:15,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:15,346 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:15,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:15,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:15,557 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr558ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1278447871, now seen corresponding path program 1 times [2021-11-03 04:26:15,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:15,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888189406] [2021-11-03 04:26:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:15,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:15,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:15,560 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:15,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:26:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:15,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:15,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:15,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:26:15,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:26:15,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:26:15,897 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 04:26:15,897 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 04:26:15,971 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 04:26:15,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 04:26:16,018 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 04:26:16,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:16,098 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 04:26:16,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:16,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888189406] [2021-11-03 04:26:16,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888189406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:16,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:16,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:26:16,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170856303] [2021-11-03 04:26:16,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:26:16,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:26:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:26:16,100 INFO L87 Difference]: Start difference. First operand 1511 states and 1810 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 04:26:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:18,410 INFO L93 Difference]: Finished difference Result 2031 states and 2396 transitions. [2021-11-03 04:26:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:26:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 04:26:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:18,424 INFO L225 Difference]: With dead ends: 2031 [2021-11-03 04:26:18,424 INFO L226 Difference]: Without dead ends: 2031 [2021-11-03 04:26:18,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-11-03 04:26:18,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1510. [2021-11-03 04:26:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 943 states have (on average 1.91728525980912) internal successors, (1808), 1509 states have internal predecessors, (1808), 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 04:26:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 1808 transitions. [2021-11-03 04:26:18,467 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 1808 transitions. Word has length 13 [2021-11-03 04:26:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:18,467 INFO L470 AbstractCegarLoop]: Abstraction has 1510 states and 1808 transitions. [2021-11-03 04:26:18,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 04:26:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 1808 transitions. [2021-11-03 04:26:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 04:26:18,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:18,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:18,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 04:26:18,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:18,684 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1153072931, now seen corresponding path program 1 times [2021-11-03 04:26:18,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:18,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819715427] [2021-11-03 04:26:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:18,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:18,686 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:18,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:26:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:18,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:26:18,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:18,957 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 04:26:18,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:19,004 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 04:26:19,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:19,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819715427] [2021-11-03 04:26:19,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819715427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:19,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:19,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:19,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396771958] [2021-11-03 04:26:19,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:19,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:19,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:19,006 INFO L87 Difference]: Start difference. First operand 1510 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:19,037 INFO L93 Difference]: Finished difference Result 1450 states and 1722 transitions. [2021-11-03 04:26:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:26:19,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-03 04:26:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:19,048 INFO L225 Difference]: With dead ends: 1450 [2021-11-03 04:26:19,048 INFO L226 Difference]: Without dead ends: 1450 [2021-11-03 04:26:19,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 04:26:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-11-03 04:26:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2021-11-03 04:26:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 907 states have (on average 1.898566703417861) internal successors, (1722), 1449 states have internal predecessors, (1722), 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 04:26:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1722 transitions. [2021-11-03 04:26:19,089 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1722 transitions. Word has length 19 [2021-11-03 04:26:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:19,090 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 1722 transitions. [2021-11-03 04:26:19,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1722 transitions. [2021-11-03 04:26:19,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-03 04:26:19,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:19,091 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] [2021-11-03 04:26:19,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:19,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:19,306 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:19,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130, now seen corresponding path program 1 times [2021-11-03 04:26:19,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:19,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018093537] [2021-11-03 04:26:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:19,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:19,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:19,308 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:19,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:26:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:19,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:19,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:19,597 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 04:26:19,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:19,662 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 04:26:19,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:19,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018093537] [2021-11-03 04:26:19,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018093537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:19,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:19,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:26:19,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426336750] [2021-11-03 04:26:19,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:19,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:19,664 INFO L87 Difference]: Start difference. First operand 1450 states and 1722 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 04:26:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:19,732 INFO L93 Difference]: Finished difference Result 1422 states and 1666 transitions. [2021-11-03 04:26:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:26:19,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-03 04:26:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:19,738 INFO L225 Difference]: With dead ends: 1422 [2021-11-03 04:26:19,738 INFO L226 Difference]: Without dead ends: 1422 [2021-11-03 04:26:19,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 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 04:26:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-11-03 04:26:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1420. [2021-11-03 04:26:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 891 states have (on average 1.8675645342312008) internal successors, (1664), 1419 states have internal predecessors, (1664), 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 04:26:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 1664 transitions. [2021-11-03 04:26:19,765 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 1664 transitions. Word has length 21 [2021-11-03 04:26:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:19,766 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 1664 transitions. [2021-11-03 04:26:19,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 04:26:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 1664 transitions. [2021-11-03 04:26:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 04:26:19,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:19,767 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] [2021-11-03 04:26:19,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:19,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:19,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:19,980 INFO L85 PathProgramCache]: Analyzing trace with hash 270814884, now seen corresponding path program 1 times [2021-11-03 04:26:19,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:19,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025032637] [2021-11-03 04:26:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:19,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:19,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:19,982 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:20,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:26:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:20,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:20,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:20,236 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 04:26:20,370 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 04:26:20,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:20,504 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 04:26:20,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:20,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025032637] [2021-11-03 04:26:20,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025032637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:20,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:20,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:26:20,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862841265] [2021-11-03 04:26:20,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:20,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:20,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:20,506 INFO L87 Difference]: Start difference. First operand 1420 states and 1664 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 04:26:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:24,026 INFO L93 Difference]: Finished difference Result 2068 states and 2441 transitions. [2021-11-03 04:26:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:26:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-03 04:26:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:24,035 INFO L225 Difference]: With dead ends: 2068 [2021-11-03 04:26:24,035 INFO L226 Difference]: Without dead ends: 2068 [2021-11-03 04:26:24,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:26:24,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2021-11-03 04:26:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1416. [2021-11-03 04:26:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 891 states have (on average 1.8585858585858586) internal successors, (1656), 1415 states have internal predecessors, (1656), 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 04:26:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1656 transitions. [2021-11-03 04:26:24,067 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1656 transitions. Word has length 35 [2021-11-03 04:26:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:24,068 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 1656 transitions. [2021-11-03 04:26:24,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 04:26:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1656 transitions. [2021-11-03 04:26:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-03 04:26:24,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:24,069 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] [2021-11-03 04:26:24,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:24,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:24,283 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash 270814885, now seen corresponding path program 1 times [2021-11-03 04:26:24,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:24,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872962448] [2021-11-03 04:26:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:24,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:24,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:24,286 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:24,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:26:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:24,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:26:24,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:24,553 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 04:26:24,847 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 04:26:24,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:25,416 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 04:26:25,416 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:25,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872962448] [2021-11-03 04:26:25,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872962448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:25,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:25,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:26:25,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799536008] [2021-11-03 04:26:25,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:26:25,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:26:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:26:25,418 INFO L87 Difference]: Start difference. First operand 1416 states and 1656 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 04:26:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:34,468 INFO L93 Difference]: Finished difference Result 2238 states and 2613 transitions. [2021-11-03 04:26:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:26:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 35 [2021-11-03 04:26:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:34,478 INFO L225 Difference]: With dead ends: 2238 [2021-11-03 04:26:34,478 INFO L226 Difference]: Without dead ends: 2238 [2021-11-03 04:26:34,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:26:34,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2021-11-03 04:26:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 1412. [2021-11-03 04:26:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 891 states have (on average 1.8496071829405163) internal successors, (1648), 1411 states have internal predecessors, (1648), 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 04:26:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1648 transitions. [2021-11-03 04:26:34,505 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1648 transitions. Word has length 35 [2021-11-03 04:26:34,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:34,506 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1648 transitions. [2021-11-03 04:26:34,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 04:26:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1648 transitions. [2021-11-03 04:26:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 04:26:34,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:34,508 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 04:26:34,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:34,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:34,720 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1615578914, now seen corresponding path program 1 times [2021-11-03 04:26:34,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:34,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146225148] [2021-11-03 04:26:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:34,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:34,723 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:34,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:26:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:35,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:35,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:35,163 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 04:26:35,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:35,304 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 04:26:35,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:35,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146225148] [2021-11-03 04:26:35,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146225148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:35,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:35,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:26:35,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344503900] [2021-11-03 04:26:35,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:35,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:35,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:35,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:35,306 INFO L87 Difference]: Start difference. First operand 1412 states and 1648 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:26:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:35,376 INFO L93 Difference]: Finished difference Result 1400 states and 1628 transitions. [2021-11-03 04:26:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:26:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:26:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:35,383 INFO L225 Difference]: With dead ends: 1400 [2021-11-03 04:26:35,383 INFO L226 Difference]: Without dead ends: 1400 [2021-11-03 04:26:35,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 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 04:26:35,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-03 04:26:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1400. [2021-11-03 04:26:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 879 states have (on average 1.852104664391354) internal successors, (1628), 1399 states have internal predecessors, (1628), 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 04:26:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1628 transitions. [2021-11-03 04:26:35,405 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1628 transitions. Word has length 53 [2021-11-03 04:26:35,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:35,407 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 1628 transitions. [2021-11-03 04:26:35,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 04:26:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1628 transitions. [2021-11-03 04:26:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:26:35,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:35,411 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] [2021-11-03 04:26:35,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:35,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:35,624 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136622, now seen corresponding path program 1 times [2021-11-03 04:26:35,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:35,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592498053] [2021-11-03 04:26:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:35,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:35,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:35,627 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:35,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:26:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:36,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:26:36,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:36,156 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-11-03 04:26:36,157 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 3 case distinctions, treesize of input 15 treesize of output 37 [2021-11-03 04:26:36,350 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 04:26:36,350 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 16 treesize of output 21 [2021-11-03 04:26:36,462 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-03 04:26:36,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 32 treesize of output 43 [2021-11-03 04:26:36,901 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 04:26:36,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:37,248 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 04:26:37,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:37,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592498053] [2021-11-03 04:26:37,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592498053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:37,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:37,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:26:37,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884964574] [2021-11-03 04:26:37,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:26:37,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:26:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:37,251 INFO L87 Difference]: Start difference. First operand 1400 states and 1628 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 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 04:26:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:43,281 INFO L93 Difference]: Finished difference Result 3217 states and 3731 transitions. [2021-11-03 04:26:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:26:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 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 61 [2021-11-03 04:26:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:43,295 INFO L225 Difference]: With dead ends: 3217 [2021-11-03 04:26:43,295 INFO L226 Difference]: Without dead ends: 3217 [2021-11-03 04:26:43,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-11-03 04:26:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1668. [2021-11-03 04:26:43,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1149 states have (on average 1.8120104438642297) internal successors, (2082), 1667 states have internal predecessors, (2082), 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 04:26:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2082 transitions. [2021-11-03 04:26:43,327 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2082 transitions. Word has length 61 [2021-11-03 04:26:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:43,328 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2082 transitions. [2021-11-03 04:26:43,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 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 04:26:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2082 transitions. [2021-11-03 04:26:43,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:26:43,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:43,329 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] [2021-11-03 04:26:43,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:43,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:43,544 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:26:43,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136623, now seen corresponding path program 1 times [2021-11-03 04:26:43,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:43,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205268965] [2021-11-03 04:26:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:43,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:43,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:43,546 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:43,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:26:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:44,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 04:26:44,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:44,202 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-11-03 04:26:44,202 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 3 case distinctions, treesize of input 28 treesize of output 49 [2021-11-03 04:26:44,257 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-11-03 04:26:44,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 63 [2021-11-03 04:26:44,487 INFO L354 Elim1Store]: treesize reduction -2, result has 108.0 percent of original size [2021-11-03 04:26:44,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 64 [2021-11-03 04:26:44,534 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-03 04:26:44,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 58 treesize of output 65 [2021-11-03 04:26:44,987 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-03 04:26:44,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 30 [2021-11-03 04:26:50,591 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 04:26:50,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:52,808 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 04:26:52,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:52,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205268965] [2021-11-03 04:26:52,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205268965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:52,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:52,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-03 04:26:52,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314894827] [2021-11-03 04:26:52,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 04:26:52,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:52,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 04:26:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:26:52,810 INFO L87 Difference]: Start difference. First operand 1668 states and 2082 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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 04:27:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:31,437 INFO L93 Difference]: Finished difference Result 1678 states and 2093 transitions. [2021-11-03 04:27:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:27:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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 61 [2021-11-03 04:27:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:31,444 INFO L225 Difference]: With dead ends: 1678 [2021-11-03 04:27:31,444 INFO L226 Difference]: Without dead ends: 1678 [2021-11-03 04:27:31,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:27:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2021-11-03 04:27:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1672. [2021-11-03 04:27:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 1153 states have (on average 1.8091934084995664) internal successors, (2086), 1671 states have internal predecessors, (2086), 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 04:27:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2086 transitions. [2021-11-03 04:27:31,474 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2086 transitions. Word has length 61 [2021-11-03 04:27:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:31,474 INFO L470 AbstractCegarLoop]: Abstraction has 1672 states and 2086 transitions. [2021-11-03 04:27:31,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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 04:27:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2086 transitions. [2021-11-03 04:27:31,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:27:31,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:31,475 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, 1] [2021-11-03 04:27:31,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 04:27:31,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:31,691 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:27:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1137699215, now seen corresponding path program 1 times [2021-11-03 04:27:31,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:31,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850794069] [2021-11-03 04:27:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:31,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:31,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:31,697 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:31,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:27:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:32,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:27:32,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:32,411 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 04:27:32,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:32,555 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 04:27:32,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:32,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850794069] [2021-11-03 04:27:32,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850794069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:32,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:32,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:27:32,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687680557] [2021-11-03 04:27:32,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:27:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:27:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:27:32,557 INFO L87 Difference]: Start difference. First operand 1672 states and 2086 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 04:27:33,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:33,072 INFO L93 Difference]: Finished difference Result 4334 states and 5506 transitions. [2021-11-03 04:27:33,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:27:33,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 65 [2021-11-03 04:27:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:33,101 INFO L225 Difference]: With dead ends: 4334 [2021-11-03 04:27:33,101 INFO L226 Difference]: Without dead ends: 4334 [2021-11-03 04:27:33,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:27:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2021-11-03 04:27:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 1670. [2021-11-03 04:27:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1152 states have (on average 1.8090277777777777) internal successors, (2084), 1669 states have internal predecessors, (2084), 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 04:27:33,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2084 transitions. [2021-11-03 04:27:33,141 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2084 transitions. Word has length 65 [2021-11-03 04:27:33,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:33,141 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 2084 transitions. [2021-11-03 04:27:33,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 04:27:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2084 transitions. [2021-11-03 04:27:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:27:33,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:33,143 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, 1, 1] [2021-11-03 04:27:33,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:33,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:33,362 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:27:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:33,363 INFO L85 PathProgramCache]: Analyzing trace with hash -908630116, now seen corresponding path program 1 times [2021-11-03 04:27:33,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:33,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822403710] [2021-11-03 04:27:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:33,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:33,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:33,365 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:33,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:27:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:33,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:27:33,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:34,379 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 04:27:34,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:34,835 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 04:27:34,835 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:34,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822403710] [2021-11-03 04:27:34,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822403710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:34,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:34,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:27:34,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037233875] [2021-11-03 04:27:34,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:27:34,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:34,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:27:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:27:34,837 INFO L87 Difference]: Start difference. First operand 1670 states and 2084 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 04:27:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:35,072 INFO L93 Difference]: Finished difference Result 3990 states and 4925 transitions. [2021-11-03 04:27:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:27:35,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 04:27:35,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:35,080 INFO L225 Difference]: With dead ends: 3990 [2021-11-03 04:27:35,080 INFO L226 Difference]: Without dead ends: 3990 [2021-11-03 04:27:35,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:27:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2021-11-03 04:27:35,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 1926. [2021-11-03 04:27:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1408 states have (on average 1.8082386363636365) internal successors, (2546), 1925 states have internal predecessors, (2546), 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 04:27:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2546 transitions. [2021-11-03 04:27:35,115 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2546 transitions. Word has length 66 [2021-11-03 04:27:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:35,115 INFO L470 AbstractCegarLoop]: Abstraction has 1926 states and 2546 transitions. [2021-11-03 04:27:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 04:27:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2546 transitions. [2021-11-03 04:27:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:27:35,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:35,116 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, 1, 1, 1] [2021-11-03 04:27:35,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:35,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:35,317 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:27:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1887851608, now seen corresponding path program 1 times [2021-11-03 04:27:35,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:35,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552599835] [2021-11-03 04:27:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:35,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:35,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:35,330 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:35,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:27:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:36,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:27:36,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:36,128 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 04:27:36,148 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 04:27:37,670 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:27:37,671 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 04:27:37,695 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:27:37,695 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 21 treesize of output 21 [2021-11-03 04:27:37,757 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 04:27:37,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:42,383 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 04:27:42,383 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:42,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552599835] [2021-11-03 04:27:42,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552599835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:42,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:42,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:27:42,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829586356] [2021-11-03 04:27:42,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:27:42,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:27:42,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:27:42,386 INFO L87 Difference]: Start difference. First operand 1926 states and 2546 transitions. Second operand has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 8 states have internal predecessors, (130), 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 04:27:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:54,688 INFO L93 Difference]: Finished difference Result 2533 states and 3261 transitions. [2021-11-03 04:27:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:27:54,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 8 states have internal predecessors, (130), 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 67 [2021-11-03 04:27:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:54,692 INFO L225 Difference]: With dead ends: 2533 [2021-11-03 04:27:54,692 INFO L226 Difference]: Without dead ends: 2533 [2021-11-03 04:27:54,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:27:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-11-03 04:27:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1887. [2021-11-03 04:27:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1408 states have (on average 1.7620738636363635) internal successors, (2481), 1886 states have internal predecessors, (2481), 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 04:27:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2481 transitions. [2021-11-03 04:27:54,718 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2481 transitions. Word has length 67 [2021-11-03 04:27:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:54,719 INFO L470 AbstractCegarLoop]: Abstraction has 1887 states and 2481 transitions. [2021-11-03 04:27:54,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 8 states have internal predecessors, (130), 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 04:27:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2481 transitions. [2021-11-03 04:27:54,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:27:54,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:54,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:54,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:54,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:54,937 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:27:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -322193671, now seen corresponding path program 1 times [2021-11-03 04:27:54,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:54,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872192505] [2021-11-03 04:27:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:54,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:54,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:54,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:54,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:27:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:55,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:27:55,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:55,728 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 04:27:55,773 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 22 treesize of output 18 [2021-11-03 04:27:55,855 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 04:27:55,928 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 04:27:55,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:56,164 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 04:27:56,164 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:56,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872192505] [2021-11-03 04:27:56,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872192505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:56,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:56,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 04:27:56,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42004940] [2021-11-03 04:27:56,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:27:56,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:27:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:27:56,166 INFO L87 Difference]: Start difference. First operand 1887 states and 2481 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 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 04:28:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:07,956 INFO L93 Difference]: Finished difference Result 2487 states and 3044 transitions. [2021-11-03 04:28:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:28:07,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 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 73 [2021-11-03 04:28:07,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:07,961 INFO L225 Difference]: With dead ends: 2487 [2021-11-03 04:28:07,961 INFO L226 Difference]: Without dead ends: 2487 [2021-11-03 04:28:07,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:28:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2021-11-03 04:28:07,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 1886. [2021-11-03 04:28:07,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1408 states have (on average 1.7613636363636365) internal successors, (2480), 1885 states have internal predecessors, (2480), 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 04:28:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2480 transitions. [2021-11-03 04:28:07,995 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2480 transitions. Word has length 73 [2021-11-03 04:28:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:07,996 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 2480 transitions. [2021-11-03 04:28:07,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 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 04:28:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2480 transitions. [2021-11-03 04:28:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:28:07,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:07,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:08,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:08,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:08,217 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:28:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1398068850, now seen corresponding path program 1 times [2021-11-03 04:28:08,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:08,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540851278] [2021-11-03 04:28:08,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:08,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:08,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:08,224 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:08,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:28:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:28:08,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-03 04:28:08,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:28:09,107 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 04:28:09,196 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 04:28:09,222 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 04:28:09,347 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 04:28:09,353 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 04:28:09,527 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 04:28:09,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:28:10,435 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 04:28:10,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:28:10,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540851278] [2021-11-03 04:28:10,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540851278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:28:10,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:28:10,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-03 04:28:10,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090037629] [2021-11-03 04:28:10,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:28:10,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:28:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:28:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:28:10,438 INFO L87 Difference]: Start difference. First operand 1886 states and 2480 transitions. Second operand has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 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 04:28:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:59,152 INFO L93 Difference]: Finished difference Result 4418 states and 5558 transitions. [2021-11-03 04:28:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 04:28:59,153 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 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 74 [2021-11-03 04:28:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:28:59,161 INFO L225 Difference]: With dead ends: 4418 [2021-11-03 04:28:59,161 INFO L226 Difference]: Without dead ends: 4418 [2021-11-03 04:28:59,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-11-03 04:28:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2021-11-03 04:28:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 1885. [2021-11-03 04:28:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1408 states have (on average 1.7606534090909092) internal successors, (2479), 1884 states have internal predecessors, (2479), 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 04:28:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2479 transitions. [2021-11-03 04:28:59,210 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2479 transitions. Word has length 74 [2021-11-03 04:28:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:28:59,211 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2479 transitions. [2021-11-03 04:28:59,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.846153846153846) internal successors, (89), 14 states have internal predecessors, (89), 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 04:28:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2479 transitions. [2021-11-03 04:28:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:28:59,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:28:59,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:28:59,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:28:59,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:28:59,429 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:28:59,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:28:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2080731706, now seen corresponding path program 1 times [2021-11-03 04:28:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:28:59,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992061872] [2021-11-03 04:28:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:28:59,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:28:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:28:59,430 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:28:59,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 04:29:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:00,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:29:00,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:00,599 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 04:29:00,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:00,809 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 04:29:00,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:00,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992061872] [2021-11-03 04:29:00,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992061872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:29:00,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:29:00,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:29:00,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414419529] [2021-11-03 04:29:00,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:29:00,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:29:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:29:00,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:29:00,811 INFO L87 Difference]: Start difference. First operand 1885 states and 2479 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 04:29:01,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:01,121 INFO L93 Difference]: Finished difference Result 2749 states and 3464 transitions. [2021-11-03 04:29:01,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:29:01,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 79 [2021-11-03 04:29:01,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:01,128 INFO L225 Difference]: With dead ends: 2749 [2021-11-03 04:29:01,128 INFO L226 Difference]: Without dead ends: 2749 [2021-11-03 04:29:01,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:29:01,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-03 04:29:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 1888. [2021-11-03 04:29:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1411 states have (on average 1.7590361445783131) internal successors, (2482), 1887 states have internal predecessors, (2482), 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 04:29:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2482 transitions. [2021-11-03 04:29:01,158 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2482 transitions. Word has length 79 [2021-11-03 04:29:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:01,158 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2482 transitions. [2021-11-03 04:29:01,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 04:29:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2482 transitions. [2021-11-03 04:29:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:29:01,160 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:01,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:01,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-03 04:29:01,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:29:01,376 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:29:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:01,377 INFO L85 PathProgramCache]: Analyzing trace with hash -21710874, now seen corresponding path program 1 times [2021-11-03 04:29:01,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:29:01,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292422129] [2021-11-03 04:29:01,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:01,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:29:01,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:29:01,379 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:29:01,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 04:29:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:02,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:29:02,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:02,689 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 04:29:02,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:03,037 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 04:29:03,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:03,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292422129] [2021-11-03 04:29:03,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292422129] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:29:03,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1393082792] [2021-11-03 04:29:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:03,038 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:29:03,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:29:03,040 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:29:03,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 04:29:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:04,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:29:04,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:04,377 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 04:29:04,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:04,567 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 04:29:04,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1393082792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:29:04,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895783784] [2021-11-03 04:29:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:29:04,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:29:04,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:29:04,572 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:29:04,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-03 04:29:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:29:05,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:29:05,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:05,764 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 04:29:05,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:05,953 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 04:29:05,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895783784] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:29:05,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:29:05,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:29:05,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638955088] [2021-11-03 04:29:05,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:29:05,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:29:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:29:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:29:05,955 INFO L87 Difference]: Start difference. First operand 1888 states and 2482 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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 04:29:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:29:06,776 INFO L93 Difference]: Finished difference Result 2755 states and 3470 transitions. [2021-11-03 04:29:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:29:06,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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 81 [2021-11-03 04:29:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:06,782 INFO L225 Difference]: With dead ends: 2755 [2021-11-03 04:29:06,783 INFO L226 Difference]: Without dead ends: 2755 [2021-11-03 04:29:06,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:29:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2021-11-03 04:29:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1894. [2021-11-03 04:29:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1417 states have (on average 1.7558221594918844) internal successors, (2488), 1893 states have internal predecessors, (2488), 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 04:29:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2488 transitions. [2021-11-03 04:29:06,818 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2488 transitions. Word has length 81 [2021-11-03 04:29:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:29:06,819 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 2488 transitions. [2021-11-03 04:29:06,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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 04:29:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2488 transitions. [2021-11-03 04:29:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 04:29:06,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:29:06,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:29:06,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2021-11-03 04:29:07,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-03 04:29:07,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 04:29:07,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:29:07,428 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:29:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:29:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1830489050, now seen corresponding path program 2 times [2021-11-03 04:29:07,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:29:07,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044212200] [2021-11-03 04:29:07,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:29:07,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:29:07,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:29:07,431 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:29:07,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 04:29:08,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:29:08,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:29:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:29:08,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:09,295 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 04:29:09,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:10,159 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 04:29:10,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:29:10,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044212200] [2021-11-03 04:29:10,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044212200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:29:10,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1704446445] [2021-11-03 04:29:10,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:29:10,160 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:29:10,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:29:10,161 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:29:10,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-03 04:29:12,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:29:12,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:29:12,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:29:12,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:29:12,454 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 04:29:12,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:29:12,699 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 04:29:12,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1704446445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:29:12,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357837684] [2021-11-03 04:29:12,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:29:12,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:29:12,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:29:12,701 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:29:12,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-03 04:30:14,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:30:14,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:30:14,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 04:30:14,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:30:15,100 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:30:15,100 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 04:30:15,352 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 04:30:16,266 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:30:16,267 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 04:30:16,693 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:30:16,694 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 04:30:18,275 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:30:18,276 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 04:30:18,718 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:30:18,719 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 04:30:24,106 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification. DAG size of input: 38 DAG size of output: 18 [2021-11-03 04:30:24,107 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:30:24,108 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 04:30:24,500 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:30:24,501 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 67 treesize of output 48 [2021-11-03 04:30:25,107 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 04:30:25,107 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 04:30:25,275 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 04:30:25,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:30:27,613 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr318| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr318| |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 04:30:29,650 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr318_66| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr318| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr318| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr318_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)))))))))))))) is different from false [2021-11-03 04:31:47,273 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-03 04:31:47,274 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 69 treesize of output 68 [2021-11-03 04:31:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 6 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-03 04:31:59,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357837684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:31:59,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:31:59,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 15] total 41 [2021-11-03 04:31:59,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104628419] [2021-11-03 04:31:59,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-03 04:31:59,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:31:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-03 04:31:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1270, Unknown=37, NotChecked=150, Total=1640 [2021-11-03 04:31:59,622 INFO L87 Difference]: Start difference. First operand 1894 states and 2488 transitions. Second operand has 41 states, 41 states have (on average 5.975609756097561) internal successors, (245), 41 states have internal predecessors, (245), 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 04:32:40,068 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2021-11-03 04:36:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:13,655 INFO L93 Difference]: Finished difference Result 4972 states and 6243 transitions. [2021-11-03 04:36:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-03 04:36:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.975609756097561) internal successors, (245), 41 states have internal predecessors, (245), 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 85 [2021-11-03 04:36:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:13,663 INFO L225 Difference]: With dead ends: 4972 [2021-11-03 04:36:13,663 INFO L226 Difference]: Without dead ends: 4972 [2021-11-03 04:36:13,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 463 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 204.1s TimeCoverageRelationStatistics Valid=1431, Invalid=5667, Unknown=50, NotChecked=334, Total=7482 [2021-11-03 04:36:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4972 states. [2021-11-03 04:36:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4972 to 1905. [2021-11-03 04:36:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1429 states have (on average 1.748775367389783) internal successors, (2499), 1904 states have internal predecessors, (2499), 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 04:36:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2499 transitions. [2021-11-03 04:36:13,712 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2499 transitions. Word has length 85 [2021-11-03 04:36:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:13,713 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2499 transitions. [2021-11-03 04:36:13,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.975609756097561) internal successors, (245), 41 states have internal predecessors, (245), 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 04:36:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2499 transitions. [2021-11-03 04:36:13,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 04:36:13,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:13,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:13,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:14,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-03 04:36:14,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:14,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:36:14,345 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:36:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:14,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1600982183, now seen corresponding path program 1 times [2021-11-03 04:36:14,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:36:14,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197123910] [2021-11-03 04:36:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:14,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:36:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:36:14,348 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:36:14,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-03 04:36:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:15,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:36:15,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:17,766 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 04:36:17,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:21,118 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 04:36:21,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:36:21,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197123910] [2021-11-03 04:36:21,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197123910] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:21,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [31679726] [2021-11-03 04:36:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:21,120 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:36:21,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:36:21,121 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:36:21,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-03 04:36:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:23,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:36:23,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:23,610 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 04:36:23,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:23,989 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 04:36:23,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [31679726] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:23,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725673594] [2021-11-03 04:36:23,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:36:23,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:23,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:36:23,991 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:36:23,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-03 04:36:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:36:25,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 04:36:25,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:36:26,220 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 04:36:26,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:36:26,591 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 04:36:26,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725673594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:36:26,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:36:26,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2021-11-03 04:36:26,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139565801] [2021-11-03 04:36:26,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 04:36:26,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:36:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 04:36:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 04:36:26,595 INFO L87 Difference]: Start difference. First operand 1905 states and 2499 transitions. Second operand has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 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 04:36:51,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:36:51,961 INFO L93 Difference]: Finished difference Result 2790 states and 3505 transitions. [2021-11-03 04:36:51,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 04:36:51,963 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 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 93 [2021-11-03 04:36:51,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:36:51,966 INFO L225 Difference]: With dead ends: 2790 [2021-11-03 04:36:51,967 INFO L226 Difference]: Without dead ends: 2790 [2021-11-03 04:36:51,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=1446, Invalid=2586, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 04:36:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2021-11-03 04:36:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1929. [2021-11-03 04:36:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1453 states have (on average 1.7364074328974535) internal successors, (2523), 1928 states have internal predecessors, (2523), 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 04:36:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2523 transitions. [2021-11-03 04:36:52,022 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2523 transitions. Word has length 93 [2021-11-03 04:36:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:36:52,022 INFO L470 AbstractCegarLoop]: Abstraction has 1929 states and 2523 transitions. [2021-11-03 04:36:52,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.264705882352941) internal successors, (111), 34 states have internal predecessors, (111), 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 04:36:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2523 transitions. [2021-11-03 04:36:52,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-03 04:36:52,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:36:52,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:36:52,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-03 04:36:52,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-03 04:36:52,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-03 04:36:52,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:36:52,634 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-03 04:36:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:36:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1361330777, now seen corresponding path program 2 times [2021-11-03 04:36:52,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:36:52,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145589104] [2021-11-03 04:36:52,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:36:52,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:36:52,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:36:52,638 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:36:52,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-03 04:36:54,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:36:54,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:36:54,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 04:36:54,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:00,668 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 04:37:00,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:10,544 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 04:37:10,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:37:10,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145589104] [2021-11-03 04:37:10,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145589104] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:37:10,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [97399354] [2021-11-03 04:37:10,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:37:10,545 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:37:10,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:37:10,546 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:37:10,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-03 04:37:13,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:37:13,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:37:13,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 04:37:13,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:14,471 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 04:37:14,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:15,051 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 04:37:15,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [97399354] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:37:15,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314723455] [2021-11-03 04:37:15,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:37:15,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:37:15,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:37:15,054 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:37:15,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd7e524c-470f-46cc-953e-05aaa1a5c301/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-03 04:39:11,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:39:11,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:39:11,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-03 04:39:11,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:13,246 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:39:13,247 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 20 treesize of output 20 [2021-11-03 04:39:13,280 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 04:39:14,159 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 04:39:14,182 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 04:39:15,956 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 04:39:15,957 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 04:39:16,033 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:39:16,033 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 04:39:16,873 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:16,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:16,957 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:16,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:17,778 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:17,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:17,857 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:17,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:25,209 WARN L207 SmtUtils]: Spent 6.52 s on a formula simplification. DAG size of input: 20 DAG size of output: 9 [2021-11-03 04:39:25,209 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:25,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:25,289 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:25,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:26,149 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:26,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:26,230 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:26,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:27,199 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:27,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:27,276 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:27,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:32,835 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:32,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:35,591 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:35,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:36,422 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:36,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:36,528 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:36,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:37,451 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:37,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:41,843 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:41,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:49,428 WARN L207 SmtUtils]: Spent 6.81 s on a formula simplification. DAG size of input: 20 DAG size of output: 9 [2021-11-03 04:39:49,428 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:49,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:39:53,868 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:39:53,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:39:58,944 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:39:58,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:04,161 WARN L207 SmtUtils]: Spent 5.19 s on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-11-03 04:40:04,162 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-11-03 04:40:04,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 69 [2021-11-03 04:40:15,467 WARN L207 SmtUtils]: Spent 7.57 s on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2021-11-03 04:40:15,468 INFO L354 Elim1Store]: treesize reduction 25, result has 34.2 percent of original size [2021-11-03 04:40:15,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 73 [2021-11-03 04:40:20,476 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:20,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:25,414 INFO L354 Elim1Store]: treesize reduction 27, result has 28.9 percent of original size [2021-11-03 04:40:25,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 71 [2021-11-03 04:40:30,580 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2021-11-03 04:40:30,580 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:30,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:40:36,350 WARN L207 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 20 DAG size of output: 9 [2021-11-03 04:40:36,351 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:40:36,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:36,433 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:36,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:40:40,087 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:40:40,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:44,829 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:44,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:40:45,666 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:40:45,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:49,747 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:49,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:40:50,609 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:40:50,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:50,696 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:50,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:40:51,625 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:40:51,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:51,708 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:51,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-03 04:40:57,762 WARN L207 SmtUtils]: Spent 5.27 s on a formula simplification. DAG size of input: 20 DAG size of output: 9 [2021-11-03 04:40:57,763 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-03 04:40:57,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-03 04:40:59,852 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-03 04:40:59,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65