./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/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_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/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_e4bac749-99d0-4eed-9f62-c44355c00ffa/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:36:02,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:36:02,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:36:02,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:36:02,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:36:02,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:36:02,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:36:02,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:36:02,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:36:02,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:36:02,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:36:02,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:36:02,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:36:02,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:36:02,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:36:02,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:36:02,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:36:02,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:36:02,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:36:02,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:36:02,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:36:02,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:36:02,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:36:02,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:36:02,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:36:02,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:36:02,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:36:02,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:36:02,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:36:02,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:36:02,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:36:02,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:36:02,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:36:02,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:36:02,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:36:02,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:36:02,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:36:02,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:36:02,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:36:02,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:36:02,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:36:02,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 05:36:02,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:36:02,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:36:02,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:36:02,402 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:36:02,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:36:02,403 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:36:02,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:36:02,403 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:36:02,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:36:02,404 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:36:02,405 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:36:02,405 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:36:02,405 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:36:02,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:36:02,406 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:36:02,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:36:02,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:36:02,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:36:02,407 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:36:02,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:36:02,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:36:02,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:36:02,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:36:02,408 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:36:02,409 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:36:02,409 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:36:02,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:36:02,411 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:36:02,411 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:36:02,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:36:02,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:36:02,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:36:02,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:36:02,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:36:02,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:36:02,413 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:36:02,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:36:02,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:36:02,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:36:02,414 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-11-03 05:36:02,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:36:02,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:36:02,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:36:02,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:36:02,721 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:36:02,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-03 05:36:02,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/91dba0b4a/fe83d5a57b0f4ed2bf9263eb9463a7f0/FLAG3b93a2fac [2021-11-03 05:36:03,400 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:36:03,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-03 05:36:03,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/91dba0b4a/fe83d5a57b0f4ed2bf9263eb9463a7f0/FLAG3b93a2fac [2021-11-03 05:36:03,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/91dba0b4a/fe83d5a57b0f4ed2bf9263eb9463a7f0 [2021-11-03 05:36:03,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:36:03,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:36:03,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:36:03,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:36:03,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:36:03,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:03" (1/1) ... [2021-11-03 05:36:03,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c42900e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:03, skipping insertion in model container [2021-11-03 05:36:03,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:03" (1/1) ... [2021-11-03 05:36:03,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:36:03,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:36:04,105 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-03 05:36:04,303 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-03 05:36:04,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:36:04,331 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 05:36:04,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f245b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:04, skipping insertion in model container [2021-11-03 05:36:04,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:36:04,332 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:36:04,334 INFO L168 Benchmark]: Toolchain (without parser) took 732.12 ms. Allocated memory is still 109.1 MB. Free memory was 69.7 MB in the beginning and 72.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:36:04,335 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory was 89.3 MB in the beginning and 89.3 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:36:04,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.63 ms. Allocated memory is still 109.1 MB. Free memory was 69.5 MB in the beginning and 72.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:36:04,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory was 89.3 MB in the beginning and 89.3 MB in the end (delta: 64.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 725.63 ms. Allocated memory is still 109.1 MB. Free memory was 69.5 MB in the beginning and 72.3 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/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_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/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_e4bac749-99d0-4eed-9f62-c44355c00ffa/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 adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:36:06,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:36:06,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:36:06,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:36:06,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:36:06,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:36:06,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:36:06,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:36:06,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:36:06,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:36:06,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:36:06,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:36:06,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:36:06,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:36:06,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:36:06,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:36:06,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:36:06,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:36:06,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:36:06,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:36:06,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:36:06,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:36:06,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:36:06,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:36:06,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:36:06,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:36:06,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:36:06,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:36:06,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:36:06,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:36:06,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:36:06,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:36:06,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:36:06,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:36:06,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:36:06,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:36:06,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:36:06,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:36:06,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:36:06,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:36:06,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:36:06,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 05:36:06,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:36:06,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:36:06,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:36:06,641 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:36:06,641 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:36:06,641 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:36:06,642 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:36:06,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:36:06,642 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:36:06,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:36:06,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:36:06,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:36:06,645 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:36:06,645 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:36:06,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:36:06,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:36:06,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:36:06,646 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:36:06,646 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:36:06,647 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:36:06,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:36:06,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:36:06,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:36:06,647 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:36:06,648 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:36:06,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:36:06,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:36:06,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:36:06,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:36:06,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:36:06,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:36:06,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:36:06,650 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:36:06,650 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:36:06,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:36:06,650 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:36:06,651 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2021-11-03 05:36:07,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:36:07,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:36:07,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:36:07,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:36:07,057 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:36:07,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-03 05:36:07,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/c46b2f5a1/03c0d148ba684b44a5eeac9c4227b612/FLAGe3e137bc0 [2021-11-03 05:36:07,746 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:36:07,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2021-11-03 05:36:07,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/c46b2f5a1/03c0d148ba684b44a5eeac9c4227b612/FLAGe3e137bc0 [2021-11-03 05:36:07,952 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/data/c46b2f5a1/03c0d148ba684b44a5eeac9c4227b612 [2021-11-03 05:36:07,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:36:07,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:36:07,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:36:07,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:36:07,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:36:07,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:07" (1/1) ... [2021-11-03 05:36:07,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487a9267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:07, skipping insertion in model container [2021-11-03 05:36:07,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:07" (1/1) ... [2021-11-03 05:36:07,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:36:08,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:36:08,476 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-03 05:36:08,623 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-03 05:36:08,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:36:08,642 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:36:08,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:36:08,727 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-03 05:36:08,808 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-03 05:36:08,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:36:08,816 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:36:08,840 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[33021,33034] [2021-11-03 05:36:08,915 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_e4bac749-99d0-4eed-9f62-c44355c00ffa/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i[49681,49694] [2021-11-03 05:36:08,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:36:08,965 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:36:08,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08 WrapperNode [2021-11-03 05:36:08,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:36:08,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:36:08,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:36:08,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:36:08,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:36:09,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:36:09,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:36:09,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:36:09,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:36:09,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:36:09,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:36:09,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:36:09,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (1/1) ... [2021-11-03 05:36:09,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:36:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:36:09,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:36:09,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:36:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:36:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:36:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:36:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:36:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:36:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:36:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:36:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:36:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:36:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:36:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:36:09,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:36:15,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:36:15,793 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-03 05:36:15,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:36:15 BoogieIcfgContainer [2021-11-03 05:36:15,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:36:15,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:36:15,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:36:15,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:36:15,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:36:07" (1/3) ... [2021-11-03 05:36:15,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9edf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:36:15, skipping insertion in model container [2021-11-03 05:36:15,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:08" (2/3) ... [2021-11-03 05:36:15,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9edf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:36:15, skipping insertion in model container [2021-11-03 05:36:15,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:36:15" (3/3) ... [2021-11-03 05:36:15,808 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2021-11-03 05:36:15,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:36:15,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 733 error locations. [2021-11-03 05:36:15,869 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:36:15,874 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 05:36:15,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2021-11-03 05:36:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 1473 states, 739 states have (on average 2.230040595399188) internal successors, (1648), 1472 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 05:36:15,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:36:15,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:15,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:36:15,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 05:36:15,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:15,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234871032] [2021-11-03 05:36:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:15,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:15,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:15,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:15,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:36:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:16,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:36:16,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:16,222 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 05:36:16,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:16,246 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 05:36:16,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:16,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234871032] [2021-11-03 05:36:16,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234871032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:16,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:16,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:36:16,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481610302] [2021-11-03 05:36:16,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:36:16,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:36:16,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:36:16,279 INFO L87 Difference]: Start difference. First operand has 1473 states, 739 states have (on average 2.230040595399188) internal successors, (1648), 1472 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:16,416 INFO L93 Difference]: Finished difference Result 1455 states and 1534 transitions. [2021-11-03 05:36:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:36:16,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:36:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:16,446 INFO L225 Difference]: With dead ends: 1455 [2021-11-03 05:36:16,447 INFO L226 Difference]: Without dead ends: 1453 [2021-11-03 05:36:16,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:36:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-11-03 05:36:16,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1453. [2021-11-03 05:36:16,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 730 states have (on average 2.0986301369863014) internal successors, (1532), 1452 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 05:36:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1532 transitions. [2021-11-03 05:36:16,557 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1532 transitions. Word has length 5 [2021-11-03 05:36:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:16,558 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1532 transitions. [2021-11-03 05:36:16,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1532 transitions. [2021-11-03 05:36:16,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:36:16,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:16,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:36:16,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:36:16,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:16,762 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 05:36:16,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:16,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853517689] [2021-11-03 05:36:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:16,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:16,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:16,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:16,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:36:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:16,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:36:16,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:16,963 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 05:36:16,977 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 05:36:16,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:16,995 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 05:36:16,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:16,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853517689] [2021-11-03 05:36:16,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853517689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:16,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:16,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:36:16,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836142126] [2021-11-03 05:36:16,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:36:16,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:36:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:36:16,999 INFO L87 Difference]: Start difference. First operand 1453 states and 1532 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:19,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:19,853 INFO L93 Difference]: Finished difference Result 1719 states and 1836 transitions. [2021-11-03 05:36:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:36:19,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:36:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:19,864 INFO L225 Difference]: With dead ends: 1719 [2021-11-03 05:36:19,864 INFO L226 Difference]: Without dead ends: 1719 [2021-11-03 05:36:19,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:36:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2021-11-03 05:36:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1438. [2021-11-03 05:36:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 806 states have (on average 1.9553349875930521) internal successors, (1576), 1437 states have internal predecessors, (1576), 0 states have call successors, (0), 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 05:36:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1576 transitions. [2021-11-03 05:36:19,901 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1576 transitions. Word has length 5 [2021-11-03 05:36:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:19,901 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 1576 transitions. [2021-11-03 05:36:19,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1576 transitions. [2021-11-03 05:36:19,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:36:19,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:19,902 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:36:19,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:20,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:20,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:20,117 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 05:36:20,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:20,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532064678] [2021-11-03 05:36:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:20,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:20,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:20,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:36:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:20,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:36:20,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:20,279 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 05:36:20,302 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 05:36:20,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:20,359 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 05:36:20,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:20,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532064678] [2021-11-03 05:36:20,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532064678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:20,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:20,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 05:36:20,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327099672] [2021-11-03 05:36:20,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:36:20,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:36:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:20,363 INFO L87 Difference]: Start difference. First operand 1438 states and 1576 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:27,314 INFO L93 Difference]: Finished difference Result 2024 states and 2207 transitions. [2021-11-03 05:36:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:36:27,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-03 05:36:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:27,326 INFO L225 Difference]: With dead ends: 2024 [2021-11-03 05:36:27,326 INFO L226 Difference]: Without dead ends: 2024 [2021-11-03 05:36:27,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:27,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-03 05:36:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1594. [2021-11-03 05:36:27,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 972 states have (on average 1.9362139917695473) internal successors, (1882), 1593 states have internal predecessors, (1882), 0 states have call successors, (0), 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 05:36:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 1882 transitions. [2021-11-03 05:36:27,365 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 1882 transitions. Word has length 5 [2021-11-03 05:36:27,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:27,366 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 1882 transitions. [2021-11-03 05:36:27,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:27,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 1882 transitions. [2021-11-03 05:36:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:36:27,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:27,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:36:27,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:27,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:27,578 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash 891404513, now seen corresponding path program 1 times [2021-11-03 05:36:27,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:27,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150508391] [2021-11-03 05:36:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:27,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:27,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:27,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:36:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:27,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:36:27,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:27,794 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 05:36:27,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:27,817 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 05:36:27,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:27,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150508391] [2021-11-03 05:36:27,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150508391] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:27,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:27,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:36:27,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10512104] [2021-11-03 05:36:27,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:36:27,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:36:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:27,820 INFO L87 Difference]: Start difference. First operand 1594 states and 1882 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:27,967 INFO L93 Difference]: Finished difference Result 3184 states and 3759 transitions. [2021-11-03 05:36:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:36:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 05:36:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:27,985 INFO L225 Difference]: With dead ends: 3184 [2021-11-03 05:36:27,985 INFO L226 Difference]: Without dead ends: 3184 [2021-11-03 05:36:27,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2021-11-03 05:36:28,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2557. [2021-11-03 05:36:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 1935 states have (on average 1.9395348837209303) internal successors, (3753), 2556 states have internal predecessors, (3753), 0 states have call successors, (0), 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 05:36:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 3753 transitions. [2021-11-03 05:36:28,057 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 3753 transitions. Word has length 6 [2021-11-03 05:36:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:28,058 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 3753 transitions. [2021-11-03 05:36:28,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 3753 transitions. [2021-11-03 05:36:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:36:28,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:28,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:36:28,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:28,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:28,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 05:36:28,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:28,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920199370] [2021-11-03 05:36:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:28,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:28,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:28,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:28,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:36:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:28,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:36:28,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:28,463 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 05:36:28,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:36:28,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:28,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920199370] [2021-11-03 05:36:28,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920199370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:28,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:28,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:36:28,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307721646] [2021-11-03 05:36:28,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:36:28,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:28,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:36:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:28,498 INFO L87 Difference]: Start difference. First operand 2557 states and 3753 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:28,545 INFO L93 Difference]: Finished difference Result 2497 states and 3667 transitions. [2021-11-03 05:36:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:36:28,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 05:36:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:28,560 INFO L225 Difference]: With dead ends: 2497 [2021-11-03 05:36:28,561 INFO L226 Difference]: Without dead ends: 2497 [2021-11-03 05:36:28,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-11-03 05:36:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2497. [2021-11-03 05:36:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2497 states, 1899 states have (on average 1.9310163243812533) internal successors, (3667), 2496 states have internal predecessors, (3667), 0 states have call successors, (0), 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 05:36:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2497 states to 2497 states and 3667 transitions. [2021-11-03 05:36:28,625 INFO L78 Accepts]: Start accepts. Automaton has 2497 states and 3667 transitions. Word has length 11 [2021-11-03 05:36:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:28,626 INFO L470 AbstractCegarLoop]: Abstraction has 2497 states and 3667 transitions. [2021-11-03 05:36:28,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2497 states and 3667 transitions. [2021-11-03 05:36:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:36:28,630 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:28,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:36:28,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-03 05:36:28,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:28,842 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 05:36:28,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:28,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811426917] [2021-11-03 05:36:28,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:28,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:28,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:28,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:36:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:29,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:36:29,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:29,067 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 05:36:29,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:29,104 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 05:36:29,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:29,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811426917] [2021-11-03 05:36:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811426917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:29,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:29,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:36:29,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060999260] [2021-11-03 05:36:29,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:36:29,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:36:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:36:29,107 INFO L87 Difference]: Start difference. First operand 2497 states and 3667 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:29,194 INFO L93 Difference]: Finished difference Result 2469 states and 3611 transitions. [2021-11-03 05:36:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:36:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 05:36:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:29,208 INFO L225 Difference]: With dead ends: 2469 [2021-11-03 05:36:29,208 INFO L226 Difference]: Without dead ends: 2469 [2021-11-03 05:36:29,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:36:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-11-03 05:36:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2021-11-03 05:36:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 1883 states have (on average 1.916622411046203) internal successors, (3609), 2466 states have internal predecessors, (3609), 0 states have call successors, (0), 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 05:36:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3609 transitions. [2021-11-03 05:36:29,279 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3609 transitions. Word has length 13 [2021-11-03 05:36:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:29,279 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3609 transitions. [2021-11-03 05:36:29,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3609 transitions. [2021-11-03 05:36:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:36:29,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:29,281 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:36:29,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:29,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:29,494 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 05:36:29,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:29,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67687825] [2021-11-03 05:36:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:29,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:29,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:29,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:29,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:36:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:29,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:36:29,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:29,668 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 05:36:29,777 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 05:36:29,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:29,885 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 05:36:29,885 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:29,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67687825] [2021-11-03 05:36:29,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67687825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:29,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:29,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:36:29,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067910095] [2021-11-03 05:36:29,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:36:29,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:29,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:36:29,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:29,888 INFO L87 Difference]: Start difference. First operand 2467 states and 3609 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:33,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:33,098 INFO L93 Difference]: Finished difference Result 3811 states and 5399 transitions. [2021-11-03 05:36:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:36:33,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 05:36:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:33,126 INFO L225 Difference]: With dead ends: 3811 [2021-11-03 05:36:33,126 INFO L226 Difference]: Without dead ends: 3811 [2021-11-03 05:36:33,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:36:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2021-11-03 05:36:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 2463. [2021-11-03 05:36:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2463 states, 1883 states have (on average 1.9123738714816783) internal successors, (3601), 2462 states have internal predecessors, (3601), 0 states have call successors, (0), 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 05:36:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2463 states to 2463 states and 3601 transitions. [2021-11-03 05:36:33,191 INFO L78 Accepts]: Start accepts. Automaton has 2463 states and 3601 transitions. Word has length 27 [2021-11-03 05:36:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:33,192 INFO L470 AbstractCegarLoop]: Abstraction has 2463 states and 3601 transitions. [2021-11-03 05:36:33,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2463 states and 3601 transitions. [2021-11-03 05:36:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:36:33,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:33,199 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:36:33,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:33,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:33,410 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 05:36:33,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:33,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137745959] [2021-11-03 05:36:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:33,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:33,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:33,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:33,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:36:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:33,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:36:33,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:33,602 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 05:36:33,848 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 05:36:33,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:34,277 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 05:36:34,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:34,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137745959] [2021-11-03 05:36:34,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137745959] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:34,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:34,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:36:34,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285576517] [2021-11-03 05:36:34,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:36:34,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:36:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:36:34,279 INFO L87 Difference]: Start difference. First operand 2463 states and 3601 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:43,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:43,173 INFO L93 Difference]: Finished difference Result 3066 states and 4239 transitions. [2021-11-03 05:36:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:36:43,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 05:36:43,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:43,185 INFO L225 Difference]: With dead ends: 3066 [2021-11-03 05:36:43,185 INFO L226 Difference]: Without dead ends: 3066 [2021-11-03 05:36:43,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 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 05:36:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-11-03 05:36:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2459. [2021-11-03 05:36:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 1883 states have (on average 1.9081253319171534) internal successors, (3593), 2458 states have internal predecessors, (3593), 0 states have call successors, (0), 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 05:36:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3593 transitions. [2021-11-03 05:36:43,241 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3593 transitions. Word has length 27 [2021-11-03 05:36:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:43,241 INFO L470 AbstractCegarLoop]: Abstraction has 2459 states and 3593 transitions. [2021-11-03 05:36:43,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3593 transitions. [2021-11-03 05:36:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:36:43,243 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:43,243 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:36:43,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:43,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:43,455 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:43,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 05:36:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:43,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655538189] [2021-11-03 05:36:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:43,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:43,456 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:43,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:36:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:43,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:36:43,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:43,812 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 05:36:43,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:43,943 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 05:36:43,943 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:43,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655538189] [2021-11-03 05:36:43,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655538189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:43,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:43,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:36:43,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44786767] [2021-11-03 05:36:43,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:36:43,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:43,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:36:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:36:43,947 INFO L87 Difference]: Start difference. First operand 2459 states and 3593 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:44,009 INFO L93 Difference]: Finished difference Result 2447 states and 3573 transitions. [2021-11-03 05:36:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:36:44,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 05:36:44,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:44,022 INFO L225 Difference]: With dead ends: 2447 [2021-11-03 05:36:44,022 INFO L226 Difference]: Without dead ends: 2447 [2021-11-03 05:36:44,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:36:44,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2021-11-03 05:36:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2447. [2021-11-03 05:36:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 1871 states have (on average 1.9096739711384287) internal successors, (3573), 2446 states have internal predecessors, (3573), 0 states have call successors, (0), 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 05:36:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3573 transitions. [2021-11-03 05:36:44,067 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3573 transitions. Word has length 42 [2021-11-03 05:36:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:44,067 INFO L470 AbstractCegarLoop]: Abstraction has 2447 states and 3573 transitions. [2021-11-03 05:36:44,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3573 transitions. [2021-11-03 05:36:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:36:44,069 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:44,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:36:44,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:44,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:44,289 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:44,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 05:36:44,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:44,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138552583] [2021-11-03 05:36:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:44,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:44,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:44,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:44,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:36:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:44,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:36:44,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:44,951 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 05:36:44,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:45,315 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 05:36:45,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:45,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138552583] [2021-11-03 05:36:45,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138552583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:45,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:45,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:36:45,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758316510] [2021-11-03 05:36:45,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:36:45,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:45,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:36:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:36:45,317 INFO L87 Difference]: Start difference. First operand 2447 states and 3573 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:45,408 INFO L93 Difference]: Finished difference Result 2263 states and 3218 transitions. [2021-11-03 05:36:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:36:45,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 05:36:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:45,421 INFO L225 Difference]: With dead ends: 2263 [2021-11-03 05:36:45,421 INFO L226 Difference]: Without dead ends: 2263 [2021-11-03 05:36:45,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:36:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-03 05:36:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2021-11-03 05:36:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1687 states have (on average 1.9075281564908122) internal successors, (3218), 2262 states have internal predecessors, (3218), 0 states have call successors, (0), 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 05:36:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3218 transitions. [2021-11-03 05:36:45,459 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3218 transitions. Word has length 50 [2021-11-03 05:36:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:45,459 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3218 transitions. [2021-11-03 05:36:45,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:36:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3218 transitions. [2021-11-03 05:36:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 05:36:45,461 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:45,461 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 05:36:45,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:45,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:45,674 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:36:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 05:36:45,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:45,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667556036] [2021-11-03 05:36:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:45,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:45,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:45,676 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:45,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:36:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:46,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:36:46,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:46,128 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 05:36:46,134 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 05:36:46,851 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:36:46,851 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 26 treesize of output 28 [2021-11-03 05:36:46,860 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:36:46,860 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 25 treesize of output 21 [2021-11-03 05:36:46,898 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 05:36:46,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:51,686 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 05:36:51,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:51,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667556036] [2021-11-03 05:36:51,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667556036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:51,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:51,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:36:51,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480450592] [2021-11-03 05:36:51,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:36:51,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:36:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 05:36:51,690 INFO L87 Difference]: Start difference. First operand 2263 states and 3218 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:12,591 INFO L93 Difference]: Finished difference Result 4001 states and 5509 transitions. [2021-11-03 05:37:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:37:12,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 05:37:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:12,606 INFO L225 Difference]: With dead ends: 4001 [2021-11-03 05:37:12,606 INFO L226 Difference]: Without dead ends: 4001 [2021-11-03 05:37:12,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 05:37:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-11-03 05:37:12,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 2421. [2021-11-03 05:37:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1883 states have (on average 1.8608603292618162) internal successors, (3504), 2420 states have internal predecessors, (3504), 0 states have call successors, (0), 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 05:37:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3504 transitions. [2021-11-03 05:37:12,663 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3504 transitions. Word has length 53 [2021-11-03 05:37:12,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:12,663 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 3504 transitions. [2021-11-03 05:37:12,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3504 transitions. [2021-11-03 05:37:12,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:37:12,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:12,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:12,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:12,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:12,879 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:37:12,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 05:37:12,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:12,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754340092] [2021-11-03 05:37:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:12,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:12,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:12,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:12,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:37:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:13,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:37:13,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:13,377 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 05:37:13,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-03 05:37:13,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-03 05:37:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:37:13,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:13,628 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 05:37:13,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:13,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754340092] [2021-11-03 05:37:13,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754340092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:13,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:13,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:37:13,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554701899] [2021-11-03 05:37:13,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:37:13,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:37:13,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:37:13,630 INFO L87 Difference]: Start difference. First operand 2421 states and 3504 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:20,189 INFO L93 Difference]: Finished difference Result 3353 states and 4702 transitions. [2021-11-03 05:37:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:37:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 05:37:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:20,197 INFO L225 Difference]: With dead ends: 3353 [2021-11-03 05:37:20,198 INFO L226 Difference]: Without dead ends: 3353 [2021-11-03 05:37:20,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:37:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2021-11-03 05:37:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 2420. [2021-11-03 05:37:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1883 states have (on average 1.8597981943706852) internal successors, (3502), 2419 states have internal predecessors, (3502), 0 states have call successors, (0), 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 05:37:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3502 transitions. [2021-11-03 05:37:20,273 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3502 transitions. Word has length 59 [2021-11-03 05:37:20,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:20,274 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 3502 transitions. [2021-11-03 05:37:20,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3502 transitions. [2021-11-03 05:37:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 05:37:20,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:20,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:20,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:20,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:20,498 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:37:20,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 05:37:20,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:20,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498125202] [2021-11-03 05:37:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:20,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:20,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:20,502 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:20,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:37:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:20,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:37:20,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:21,016 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 05:37:21,050 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 05:37:21,066 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 05:37:21,149 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 05:37:21,153 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 05:37:21,254 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 05:37:21,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:21,739 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 05:37:21,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:21,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498125202] [2021-11-03 05:37:21,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498125202] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:21,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:21,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 05:37:21,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726933947] [2021-11-03 05:37:21,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:37:21,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:37:21,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:37:21,741 INFO L87 Difference]: Start difference. First operand 2420 states and 3502 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:44,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:44,354 INFO L93 Difference]: Finished difference Result 3100 states and 4345 transitions. [2021-11-03 05:37:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:37:44,356 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 05:37:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:44,362 INFO L225 Difference]: With dead ends: 3100 [2021-11-03 05:37:44,363 INFO L226 Difference]: Without dead ends: 3100 [2021-11-03 05:37:44,363 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:37:44,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2021-11-03 05:37:44,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2419. [2021-11-03 05:37:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 1883 states have (on average 1.858736059479554) internal successors, (3500), 2418 states have internal predecessors, (3500), 0 states have call successors, (0), 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 05:37:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3500 transitions. [2021-11-03 05:37:44,414 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3500 transitions. Word has length 60 [2021-11-03 05:37:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:44,415 INFO L470 AbstractCegarLoop]: Abstraction has 2419 states and 3500 transitions. [2021-11-03 05:37:44,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3500 transitions. [2021-11-03 05:37:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:37:44,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:44,416 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:44,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:44,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:44,630 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:37:44,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:44,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 05:37:44,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:44,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139358151] [2021-11-03 05:37:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:44,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:44,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:44,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:44,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:37:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:37:45,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:45,291 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 05:37:45,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:45,424 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 05:37:45,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:45,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139358151] [2021-11-03 05:37:45,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139358151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:45,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:45,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:37:45,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645342827] [2021-11-03 05:37:45,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:37:45,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:37:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:37:45,426 INFO L87 Difference]: Start difference. First operand 2419 states and 3500 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:45,669 INFO L93 Difference]: Finished difference Result 3354 states and 4695 transitions. [2021-11-03 05:37:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:37:45,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 05:37:45,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:45,679 INFO L225 Difference]: With dead ends: 3354 [2021-11-03 05:37:45,680 INFO L226 Difference]: Without dead ends: 3354 [2021-11-03 05:37:45,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:37:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-11-03 05:37:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 2437. [2021-11-03 05:37:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 1901 states have (on average 1.8506049447659128) internal successors, (3518), 2436 states have internal predecessors, (3518), 0 states have call successors, (0), 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 05:37:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3518 transitions. [2021-11-03 05:37:45,737 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3518 transitions. Word has length 64 [2021-11-03 05:37:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:45,737 INFO L470 AbstractCegarLoop]: Abstraction has 2437 states and 3518 transitions. [2021-11-03 05:37:45,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3518 transitions. [2021-11-03 05:37:45,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 05:37:45,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:45,738 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:45,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:45,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:45,957 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:37:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 05:37:45,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:45,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602654934] [2021-11-03 05:37:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:45,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:45,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:45,959 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:45,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:37:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:46,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:37:46,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:46,715 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 05:37:46,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:46,989 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 05:37:46,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:46,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602654934] [2021-11-03 05:37:46,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602654934] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:37:46,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [539016489] [2021-11-03 05:37:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:46,990 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:37:46,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:37:46,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:37:47,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:37:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:47,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:37:47,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:47,942 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 05:37:47,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:48,065 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 05:37:48,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [539016489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:37:48,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177045642] [2021-11-03 05:37:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:48,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:37:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:37:48,067 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:37:48,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 05:37:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:48,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:37:48,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:48,811 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 05:37:48,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:48,960 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 05:37:48,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177045642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:37:48,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:37:48,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 05:37:48,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619787814] [2021-11-03 05:37:48,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:37:48,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:37:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:37:48,963 INFO L87 Difference]: Start difference. First operand 2437 states and 3518 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:49,694 INFO L93 Difference]: Finished difference Result 3390 states and 4731 transitions. [2021-11-03 05:37:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:37:49,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 05:37:49,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:49,703 INFO L225 Difference]: With dead ends: 3390 [2021-11-03 05:37:49,703 INFO L226 Difference]: Without dead ends: 3390 [2021-11-03 05:37:49,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:37:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2021-11-03 05:37:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 2473. [2021-11-03 05:37:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1937 states have (on average 1.8347960764068147) internal successors, (3554), 2472 states have internal predecessors, (3554), 0 states have call successors, (0), 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 05:37:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3554 transitions. [2021-11-03 05:37:49,749 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3554 transitions. Word has length 66 [2021-11-03 05:37:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:49,750 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 3554 transitions. [2021-11-03 05:37:49,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:37:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3554 transitions. [2021-11-03 05:37:49,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 05:37:49,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:49,751 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:49,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:49,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:50,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:50,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:37:50,357 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:37:50,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:50,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 05:37:50,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:50,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865674426] [2021-11-03 05:37:50,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:37:50,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:50,359 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:50,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 05:37:51,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:37:51,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:37:51,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:37:51,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:51,480 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 05:37:51,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:52,013 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 05:37:52,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:52,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865674426] [2021-11-03 05:37:52,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865674426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:37:52,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [958029710] [2021-11-03 05:37:52,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:37:52,014 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:37:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:37:52,024 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:37:52,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 05:37:53,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:37:53,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:37:53,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:37:53,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:54,149 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 05:37:54,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:54,340 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 05:37:54,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [958029710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:37:54,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090122347] [2021-11-03 05:37:54,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:37:54,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:37:54,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:37:54,343 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:37:54,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 05:38:00,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:38:00,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:38:00,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:38:00,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:00,801 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 05:38:00,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:00,954 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 05:38:00,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090122347] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:38:00,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:38:00,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-03 05:38:00,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632603825] [2021-11-03 05:38:00,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 05:38:00,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:38:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 05:38:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:38:00,957 INFO L87 Difference]: Start difference. First operand 2473 states and 3554 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 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 05:38:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:04,866 INFO L93 Difference]: Finished difference Result 3462 states and 4803 transitions. [2021-11-03 05:38:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 05:38:04,867 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-03 05:38:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:04,874 INFO L225 Difference]: With dead ends: 3462 [2021-11-03 05:38:04,874 INFO L226 Difference]: Without dead ends: 3462 [2021-11-03 05:38:04,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=370, Invalid=622, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:38:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2021-11-03 05:38:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 2545. [2021-11-03 05:38:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2009 states have (on average 1.8048780487804879) internal successors, (3626), 2544 states have internal predecessors, (3626), 0 states have call successors, (0), 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 05:38:04,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3626 transitions. [2021-11-03 05:38:04,941 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3626 transitions. Word has length 70 [2021-11-03 05:38:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:04,942 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 3626 transitions. [2021-11-03 05:38:04,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 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 05:38:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3626 transitions. [2021-11-03 05:38:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 05:38:04,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:04,943 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:04,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:05,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:05,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:05,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:05,550 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 729 more)] === [2021-11-03 05:38:05,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:05,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996130, now seen corresponding path program 3 times [2021-11-03 05:38:05,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:05,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517895231] [2021-11-03 05:38:05,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:38:05,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:05,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:05,552 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:05,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 05:38:06,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 05:38:06,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:38:06,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:38:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:07,480 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 05:38:07,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:09,024 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 05:38:09,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:38:09,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517895231] [2021-11-03 05:38:09,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517895231] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:38:09,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291384981] [2021-11-03 05:38:09,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:38:09,025 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:38:09,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:38:09,025 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:38:09,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 05:38:16,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-03 05:38:16,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:38:17,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:38:17,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:38:17,316 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 05:38:17,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:38:17,526 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 05:38:17,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291384981] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:38:17,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387708185] [2021-11-03 05:38:17,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:38:17,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:38:17,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:38:17,527 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:38:17,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4bac749-99d0-4eed-9f62-c44355c00ffa/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process