./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:39:26,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:39:26,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:39:27,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:39:27,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:39:27,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:39:27,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:39:27,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:39:27,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:39:27,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:39:27,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:39:27,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:39:27,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:39:27,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:39:27,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:39:27,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:39:27,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:39:27,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:39:27,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:39:27,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:39:27,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:39:27,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:39:27,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:39:27,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:39:27,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:39:27,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:39:27,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:39:27,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:39:27,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:39:27,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:39:27,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:39:27,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:39:27,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:39:27,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:39:27,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:39:27,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:39:27,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:39:27,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:39:27,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:39:27,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:39:27,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:39:27,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:39:27,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:39:27,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:39:27,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:39:27,174 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:39:27,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:39:27,175 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:39:27,175 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:39:27,175 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:39:27,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:39:27,175 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:39:27,176 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:39:27,177 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:39:27,177 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:39:27,177 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:39:27,178 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:39:27,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:39:27,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:39:27,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:39:27,179 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:39:27,179 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:39:27,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:39:27,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:39:27,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:39:27,180 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:39:27,180 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:39:27,181 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:39:27,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:39:27,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:39:27,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:39:27,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:39:27,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:39:27,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:39:27,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:27,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:39:27,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:39:27,184 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:39:27,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:39:27,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:39:27,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:39:27,185 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2021-11-03 04:39:27,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:39:27,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:39:27,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:39:27,479 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:39:27,480 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:39:27,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-03 04:39:27,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/92a429e6f/cac9acda0752406b82fc48ca109c4639/FLAGa2b9a1cc6 [2021-11-03 04:39:28,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:39:28,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-03 04:39:28,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/92a429e6f/cac9acda0752406b82fc48ca109c4639/FLAGa2b9a1cc6 [2021-11-03 04:39:28,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/92a429e6f/cac9acda0752406b82fc48ca109c4639 [2021-11-03 04:39:28,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:39:28,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:39:28,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:28,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:39:28,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:39:28,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:28" (1/1) ... [2021-11-03 04:39:28,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db39296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:28, skipping insertion in model container [2021-11-03 04:39:28,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:28" (1/1) ... [2021-11-03 04:39:28,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:39:28,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:28,876 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-03 04:39:28,987 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-03 04:39:29,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:29,016 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:39:29,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38b65348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:29, skipping insertion in model container [2021-11-03 04:39:29,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:29,026 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:39:29,028 INFO L168 Benchmark]: Toolchain (without parser) took 640.34 ms. Allocated memory is still 104.9 MB. Free memory was 60.2 MB in the beginning and 67.0 MB in the end (delta: -6.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:29,029 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:39:29,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.90 ms. Allocated memory is still 104.9 MB. Free memory was 60.0 MB in the beginning and 67.0 MB in the end (delta: -7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:39:29,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 78.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 637.90 ms. Allocated memory is still 104.9 MB. Free memory was 60.0 MB in the beginning and 67.0 MB in the end (delta: -7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:39:31,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:39:31,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:39:31,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:39:31,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:39:31,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:39:31,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:39:31,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:39:31,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:39:31,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:39:31,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:39:31,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:39:31,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:39:31,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:39:31,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:39:31,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:39:31,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:39:31,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:39:31,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:39:31,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:39:31,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:39:31,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:39:31,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:39:31,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:39:31,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:39:31,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:39:31,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:39:31,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:39:31,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:39:31,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:39:31,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:39:31,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:39:31,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:39:31,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:39:31,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:39:31,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:39:31,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:39:31,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:39:31,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:39:31,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:39:31,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:39:31,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:39:31,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:39:31,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:39:31,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:39:31,451 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:39:31,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:39:31,452 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:39:31,452 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:39:31,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:39:31,452 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:39:31,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:39:31,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:39:31,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:39:31,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:39:31,456 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:39:31,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:39:31,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:39:31,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:39:31,457 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:39:31,457 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:39:31,457 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:39:31,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:39:31,458 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:39:31,458 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:39:31,458 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:39:31,458 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:39:31,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:39:31,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:39:31,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:39:31,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:39:31,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:31,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:39:31,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:39:31,461 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:39:31,461 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:39:31,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:39:31,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:39:31,462 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2021-11-03 04:39:31,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:39:31,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:39:31,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:39:31,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:39:31,935 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:39:31,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-03 04:39:32,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/fde71ace2/dc9784063b614d028cb33c9a0e3ad8f5/FLAG9a3ee46a9 [2021-11-03 04:39:32,609 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:39:32,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2021-11-03 04:39:32,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/fde71ace2/dc9784063b614d028cb33c9a0e3ad8f5/FLAG9a3ee46a9 [2021-11-03 04:39:32,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/data/fde71ace2/dc9784063b614d028cb33c9a0e3ad8f5 [2021-11-03 04:39:32,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:39:32,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:39:32,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:32,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:39:32,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:39:32,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:32" (1/1) ... [2021-11-03 04:39:32,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8e4e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:32, skipping insertion in model container [2021-11-03 04:39:32,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:39:32" (1/1) ... [2021-11-03 04:39:32,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:39:32,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:33,529 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-03 04:39:33,686 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-03 04:39:33,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:33,717 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:39:33,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:39:33,773 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-03 04:39:33,881 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-03 04:39:33,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:33,898 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:39:33,925 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2021-11-03 04:39:33,987 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_006b0aa6-5451-4ec1-99fd-08babc86f3c3/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2021-11-03 04:39:33,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:39:34,075 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:39:34,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34 WrapperNode [2021-11-03 04:39:34,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:39:34,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:34,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:39:34,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:39:34,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:39:34,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:39:34,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:39:34,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:39:34,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:39:34,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:39:34,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:39:34,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:39:34,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (1/1) ... [2021-11-03 04:39:34,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:39:34,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:39:34,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:39:34,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:39:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:39:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:39:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:39:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:39:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:39:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:39:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:39:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:39:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:39:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:39:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:39:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:39:40,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:39:40,279 INFO L299 CfgBuilder]: Removed 145 assume(true) statements. [2021-11-03 04:39:40,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:40 BoogieIcfgContainer [2021-11-03 04:39:40,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:39:40,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:39:40,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:39:40,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:39:40,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:39:32" (1/3) ... [2021-11-03 04:39:40,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:40, skipping insertion in model container [2021-11-03 04:39:40,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:39:34" (2/3) ... [2021-11-03 04:39:40,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:39:40, skipping insertion in model container [2021-11-03 04:39:40,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:39:40" (3/3) ... [2021-11-03 04:39:40,295 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2021-11-03 04:39:40,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:39:40,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 670 error locations. [2021-11-03 04:39:40,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:39:40,369 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:39:40,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 670 error locations. [2021-11-03 04:39:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 1382 states, 711 states have (on average 2.2278481012658227) internal successors, (1584), 1381 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:39:40,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:40,455 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:39:40,456 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:39:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:40,462 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 04:39:40,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:40,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351299601] [2021-11-03 04:39:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:40,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:40,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:40,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:39:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:40,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:40,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:40,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:39:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:40,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:40,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:40,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351299601] [2021-11-03 04:39:40,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351299601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:40,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:40,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:39:40,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119593266] [2021-11-03 04:39:40,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:40,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:40,908 INFO L87 Difference]: Start difference. First operand has 1382 states, 711 states have (on average 2.2278481012658227) internal successors, (1584), 1381 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:43,193 INFO L93 Difference]: Finished difference Result 1623 states and 1743 transitions. [2021-11-03 04:39:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:43,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 04:39:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:43,223 INFO L225 Difference]: With dead ends: 1623 [2021-11-03 04:39:43,223 INFO L226 Difference]: Without dead ends: 1621 [2021-11-03 04:39:43,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2021-11-03 04:39:43,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1402. [2021-11-03 04:39:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 746 states have (on average 2.0549597855227884) internal successors, (1533), 1401 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1533 transitions. [2021-11-03 04:39:43,347 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1533 transitions. Word has length 3 [2021-11-03 04:39:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:43,347 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 1533 transitions. [2021-11-03 04:39:43,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1533 transitions. [2021-11-03 04:39:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:39:43,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:43,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:39:43,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:43,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:43,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:39:43,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 04:39:43,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:43,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086200010] [2021-11-03 04:39:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:43,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:43,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:43,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:43,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:39:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:43,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:39:43,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:43,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:39:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:43,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:43,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:43,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086200010] [2021-11-03 04:39:43,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086200010] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:43,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:43,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:39:43,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675351196] [2021-11-03 04:39:43,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:43,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:43,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:43,895 INFO L87 Difference]: Start difference. First operand 1402 states and 1533 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:49,699 INFO L93 Difference]: Finished difference Result 2199 states and 2403 transitions. [2021-11-03 04:39:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:49,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 04:39:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:49,713 INFO L225 Difference]: With dead ends: 2199 [2021-11-03 04:39:49,713 INFO L226 Difference]: Without dead ends: 2199 [2021-11-03 04:39:49,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-11-03 04:39:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 1472. [2021-11-03 04:39:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 825 states have (on average 2.0375757575757576) internal successors, (1681), 1471 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1681 transitions. [2021-11-03 04:39:49,769 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1681 transitions. Word has length 3 [2021-11-03 04:39:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:49,769 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 1681 transitions. [2021-11-03 04:39:49,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:49,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1681 transitions. [2021-11-03 04:39:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:39:49,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:49,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:49,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:49,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:49,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:39:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:49,983 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-03 04:39:49,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:49,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692334100] [2021-11-03 04:39:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:49,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:49,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:49,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:50,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:39:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:50,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:39:50,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:50,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:39:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:50,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:50,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:50,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692334100] [2021-11-03 04:39:50,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692334100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:50,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:50,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:39:50,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737583770] [2021-11-03 04:39:50,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:50,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:50,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:50,258 INFO L87 Difference]: Start difference. First operand 1472 states and 1681 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:52,780 INFO L93 Difference]: Finished difference Result 1797 states and 2028 transitions. [2021-11-03 04:39:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:39:52,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:39:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:52,790 INFO L225 Difference]: With dead ends: 1797 [2021-11-03 04:39:52,790 INFO L226 Difference]: Without dead ends: 1797 [2021-11-03 04:39:52,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2021-11-03 04:39:52,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1425. [2021-11-03 04:39:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 825 states have (on average 1.9745454545454546) internal successors, (1629), 1424 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1629 transitions. [2021-11-03 04:39:52,829 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1629 transitions. Word has length 8 [2021-11-03 04:39:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:52,830 INFO L470 AbstractCegarLoop]: Abstraction has 1425 states and 1629 transitions. [2021-11-03 04:39:52,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1629 transitions. [2021-11-03 04:39:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:39:52,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:52,833 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:52,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:53,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:53,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:39:53,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:53,048 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-03 04:39:53,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:53,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508366697] [2021-11-03 04:39:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:53,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:53,050 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:53,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:39:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:53,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:39:53,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:53,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:39:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:53,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:53,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:53,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508366697] [2021-11-03 04:39:53,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508366697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:53,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:53,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:39:53,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160797610] [2021-11-03 04:39:53,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:39:53,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:39:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:53,374 INFO L87 Difference]: Start difference. First operand 1425 states and 1629 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:39:59,305 INFO L93 Difference]: Finished difference Result 1945 states and 2138 transitions. [2021-11-03 04:39:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:39:59,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:39:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:39:59,317 INFO L225 Difference]: With dead ends: 1945 [2021-11-03 04:39:59,317 INFO L226 Difference]: Without dead ends: 1945 [2021-11-03 04:39:59,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:39:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2021-11-03 04:39:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1654. [2021-11-03 04:39:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1064 states have (on average 1.9727443609022557) internal successors, (2099), 1653 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2099 transitions. [2021-11-03 04:39:59,358 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2099 transitions. Word has length 8 [2021-11-03 04:39:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:39:59,359 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 2099 transitions. [2021-11-03 04:39:59,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:39:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2099 transitions. [2021-11-03 04:39:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:39:59,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:39:59,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:39:59,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:39:59,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:39:59,572 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr564REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:39:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:39:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 883438234, now seen corresponding path program 1 times [2021-11-03 04:39:59,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:39:59,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413121867] [2021-11-03 04:39:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:39:59,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:39:59,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:39:59,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:39:59,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:39:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:39:59,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:39:59,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:39:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:59,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:39:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:39:59,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:39:59,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413121867] [2021-11-03 04:39:59,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413121867] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:39:59,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:39:59,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:39:59,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264467121] [2021-11-03 04:39:59,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:39:59,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:39:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:39:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:39:59,873 INFO L87 Difference]: Start difference. First operand 1654 states and 2099 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:00,342 INFO L93 Difference]: Finished difference Result 2559 states and 3264 transitions. [2021-11-03 04:40:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:40:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:00,357 INFO L225 Difference]: With dead ends: 2559 [2021-11-03 04:40:00,358 INFO L226 Difference]: Without dead ends: 2559 [2021-11-03 04:40:00,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:40:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-11-03 04:40:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2112. [2021-11-03 04:40:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1522 states have (on average 1.9671484888304862) internal successors, (2994), 2111 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2994 transitions. [2021-11-03 04:40:00,413 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2994 transitions. Word has length 11 [2021-11-03 04:40:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:00,413 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 2994 transitions. [2021-11-03 04:40:00,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2994 transitions. [2021-11-03 04:40:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 04:40:00,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:00,415 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:00,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:00,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:00,626 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr359REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:00,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2101741940, now seen corresponding path program 1 times [2021-11-03 04:40:00,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:00,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660457917] [2021-11-03 04:40:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:00,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:00,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:00,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:00,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:40:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:00,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:00,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:00,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:00,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:00,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660457917] [2021-11-03 04:40:00,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660457917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:00,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:00,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:40:00,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993547857] [2021-11-03 04:40:00,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:00,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:00,870 INFO L87 Difference]: Start difference. First operand 2112 states and 2994 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:00,909 INFO L93 Difference]: Finished difference Result 2235 states and 3054 transitions. [2021-11-03 04:40:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:00,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 04:40:00,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:00,930 INFO L225 Difference]: With dead ends: 2235 [2021-11-03 04:40:00,930 INFO L226 Difference]: Without dead ends: 2235 [2021-11-03 04:40:00,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2021-11-03 04:40:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2016. [2021-11-03 04:40:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1450 states have (on average 1.946206896551724) internal successors, (2822), 2015 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2822 transitions. [2021-11-03 04:40:00,999 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2822 transitions. Word has length 13 [2021-11-03 04:40:01,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:01,000 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 2822 transitions. [2021-11-03 04:40:01,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2822 transitions. [2021-11-03 04:40:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:40:01,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:01,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:01,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:01,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:01,214 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr669ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1043382472, now seen corresponding path program 1 times [2021-11-03 04:40:01,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:01,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277887051] [2021-11-03 04:40:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:01,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:01,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:01,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:01,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:40:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:01,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:01,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:01,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:40:01,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:40:01,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:40:01,483 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 04:40:01,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 04:40:01,561 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 04:40:01,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 04:40:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:01,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:01,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:01,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277887051] [2021-11-03 04:40:01,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277887051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:01,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:01,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:40:01,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193837742] [2021-11-03 04:40:01,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:40:01,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:01,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:40:01,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:40:01,667 INFO L87 Difference]: Start difference. First operand 2016 states and 2822 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:03,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:03,144 INFO L93 Difference]: Finished difference Result 2750 states and 3860 transitions. [2021-11-03 04:40:03,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:03,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-03 04:40:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:03,158 INFO L225 Difference]: With dead ends: 2750 [2021-11-03 04:40:03,158 INFO L226 Difference]: Without dead ends: 2750 [2021-11-03 04:40:03,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:40:03,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2021-11-03 04:40:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2015. [2021-11-03 04:40:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1449 states have (on average 1.9461697722567288) internal successors, (2820), 2014 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2820 transitions. [2021-11-03 04:40:03,206 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2820 transitions. Word has length 14 [2021-11-03 04:40:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:03,206 INFO L470 AbstractCegarLoop]: Abstraction has 2015 states and 2820 transitions. [2021-11-03 04:40:03,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2820 transitions. [2021-11-03 04:40:03,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:40:03,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:03,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:03,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 04:40:03,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:03,423 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:03,423 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-03 04:40:03,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:03,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684521033] [2021-11-03 04:40:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:03,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:03,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:03,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:03,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:40:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:03,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:40:03,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:03,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:03,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:03,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684521033] [2021-11-03 04:40:03,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684521033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:03,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:03,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:40:03,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704135844] [2021-11-03 04:40:03,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:03,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:03,704 INFO L87 Difference]: Start difference. First operand 2015 states and 2820 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:03,744 INFO L93 Difference]: Finished difference Result 1955 states and 2734 transitions. [2021-11-03 04:40:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:40:03,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 18 [2021-11-03 04:40:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:03,751 INFO L225 Difference]: With dead ends: 1955 [2021-11-03 04:40:03,751 INFO L226 Difference]: Without dead ends: 1955 [2021-11-03 04:40:03,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2021-11-03 04:40:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1955. [2021-11-03 04:40:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1413 states have (on average 1.934890304317056) internal successors, (2734), 1954 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 2734 transitions. [2021-11-03 04:40:03,793 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 2734 transitions. Word has length 18 [2021-11-03 04:40:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:03,794 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 2734 transitions. [2021-11-03 04:40:03,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 2734 transitions. [2021-11-03 04:40:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:40:03,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:03,795 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] [2021-11-03 04:40:03,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:04,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,008 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:04,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-03 04:40:04,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:04,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695103136] [2021-11-03 04:40:04,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:04,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:04,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:04,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:40:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:04,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:04,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:04,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:04,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:04,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695103136] [2021-11-03 04:40:04,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695103136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:04,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:04,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:40:04,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72940402] [2021-11-03 04:40:04,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:40:04,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:40:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:40:04,323 INFO L87 Difference]: Start difference. First operand 1955 states and 2734 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:04,394 INFO L93 Difference]: Finished difference Result 1927 states and 2678 transitions. [2021-11-03 04:40:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:04,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 20 [2021-11-03 04:40:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:04,405 INFO L225 Difference]: With dead ends: 1927 [2021-11-03 04:40:04,405 INFO L226 Difference]: Without dead ends: 1927 [2021-11-03 04:40:04,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:40:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2021-11-03 04:40:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1925. [2021-11-03 04:40:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1397 states have (on average 1.9155332856120257) internal successors, (2676), 1924 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2676 transitions. [2021-11-03 04:40:04,454 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2676 transitions. Word has length 20 [2021-11-03 04:40:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:04,454 INFO L470 AbstractCegarLoop]: Abstraction has 1925 states and 2676 transitions. [2021-11-03 04:40:04,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2676 transitions. [2021-11-03 04:40:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:40:04,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:04,456 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] [2021-11-03 04:40:04,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:04,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,668 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-03 04:40:04,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:04,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27147973] [2021-11-03 04:40:04,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:04,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:04,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:04,669 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:04,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:40:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:04,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:04,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:04,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:40:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:04,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:05,120 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:05,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27147973] [2021-11-03 04:40:05,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27147973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:05,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:05,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:40:05,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271283493] [2021-11-03 04:40:05,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:05,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:05,122 INFO L87 Difference]: Start difference. First operand 1925 states and 2676 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:07,552 INFO L93 Difference]: Finished difference Result 2816 states and 3957 transitions. [2021-11-03 04:40:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:40:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-03 04:40:07,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:07,579 INFO L225 Difference]: With dead ends: 2816 [2021-11-03 04:40:07,579 INFO L226 Difference]: Without dead ends: 2816 [2021-11-03 04:40:07,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:40:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-11-03 04:40:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1921. [2021-11-03 04:40:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1397 states have (on average 1.9098067287043665) internal successors, (2668), 1920 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2668 transitions. [2021-11-03 04:40:07,616 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2668 transitions. Word has length 34 [2021-11-03 04:40:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:07,617 INFO L470 AbstractCegarLoop]: Abstraction has 1921 states and 2668 transitions. [2021-11-03 04:40:07,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2668 transitions. [2021-11-03 04:40:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:40:07,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:07,619 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] [2021-11-03 04:40:07,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:07,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:07,831 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-03 04:40:07,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:07,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686845245] [2021-11-03 04:40:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:07,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:07,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:07,834 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:07,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:40:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:08,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:40:08,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:08,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:40:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:08,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:08,865 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:08,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686845245] [2021-11-03 04:40:08,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686845245] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:08,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:08,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:40:08,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347381553] [2021-11-03 04:40:08,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:40:08,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:40:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:40:08,867 INFO L87 Difference]: Start difference. First operand 1921 states and 2668 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:15,757 INFO L93 Difference]: Finished difference Result 2399 states and 2924 transitions. [2021-11-03 04:40:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:40:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2021-11-03 04:40:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:15,770 INFO L225 Difference]: With dead ends: 2399 [2021-11-03 04:40:15,770 INFO L226 Difference]: Without dead ends: 2399 [2021-11-03 04:40:15,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:40:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2021-11-03 04:40:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 1917. [2021-11-03 04:40:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1397 states have (on average 1.9040801717967073) internal successors, (2660), 1916 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2660 transitions. [2021-11-03 04:40:15,804 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2660 transitions. Word has length 34 [2021-11-03 04:40:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:15,805 INFO L470 AbstractCegarLoop]: Abstraction has 1917 states and 2660 transitions. [2021-11-03 04:40:15,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2660 transitions. [2021-11-03 04:40:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:40:15,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:15,807 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] [2021-11-03 04:40:15,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:16,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:16,019 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:16,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:16,019 INFO L85 PathProgramCache]: Analyzing trace with hash -489765179, now seen corresponding path program 1 times [2021-11-03 04:40:16,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:16,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955623291] [2021-11-03 04:40:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:16,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:16,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:16,021 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:16,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:40:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:16,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:40:16,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:16,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:16,590 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:16,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955623291] [2021-11-03 04:40:16,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955623291] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:16,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:40:16,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812336207] [2021-11-03 04:40:16,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:40:16,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:40:16,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:40:16,592 INFO L87 Difference]: Start difference. First operand 1917 states and 2660 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:16,657 INFO L93 Difference]: Finished difference Result 1905 states and 2640 transitions. [2021-11-03 04:40:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:40:16,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 52 [2021-11-03 04:40:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:16,670 INFO L225 Difference]: With dead ends: 1905 [2021-11-03 04:40:16,670 INFO L226 Difference]: Without dead ends: 1905 [2021-11-03 04:40:16,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:40:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2021-11-03 04:40:16,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1905. [2021-11-03 04:40:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1385 states have (on average 1.9061371841155235) internal successors, (2640), 1904 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2640 transitions. [2021-11-03 04:40:16,704 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2640 transitions. Word has length 52 [2021-11-03 04:40:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:16,704 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2640 transitions. [2021-11-03 04:40:16,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2640 transitions. [2021-11-03 04:40:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:40:16,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:16,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:16,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:16,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:16,922 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:16,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-03 04:40:16,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:16,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748875458] [2021-11-03 04:40:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:16,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:16,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:16,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:16,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:40:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:17,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:40:17,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:17,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:40:17,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:40:18,259 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:40:18,259 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 32 treesize of output 34 [2021-11-03 04:40:18,266 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:40:18,267 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 31 treesize of output 27 [2021-11-03 04:40:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:18,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:23,315 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 04:40:23,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:23,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748875458] [2021-11-03 04:40:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748875458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:23,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:40:23,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513468606] [2021-11-03 04:40:23,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:40:23,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:40:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 04:40:23,318 INFO L87 Difference]: Start difference. First operand 1905 states and 2640 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:37,247 INFO L93 Difference]: Finished difference Result 2582 states and 3708 transitions. [2021-11-03 04:40:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:40:37,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:40:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:37,257 INFO L225 Difference]: With dead ends: 2582 [2021-11-03 04:40:37,257 INFO L226 Difference]: Without dead ends: 2582 [2021-11-03 04:40:37,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 04:40:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2021-11-03 04:40:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1475. [2021-11-03 04:40:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 995 states have (on average 1.8331658291457287) internal successors, (1824), 1474 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 1824 transitions. [2021-11-03 04:40:37,284 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 1824 transitions. Word has length 60 [2021-11-03 04:40:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:37,285 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 1824 transitions. [2021-11-03 04:40:37,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 1824 transitions. [2021-11-03 04:40:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:40:37,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:37,287 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:37,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:40:37,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:37,501 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-03 04:40:37,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:37,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924083908] [2021-11-03 04:40:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:37,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:37,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:37,514 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:40:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:37,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:40:37,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:38,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:40:38,098 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 24 treesize of output 20 [2021-11-03 04:40:38,136 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 26 treesize of output 14 [2021-11-03 04:40:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:38,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:38,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:38,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924083908] [2021-11-03 04:40:38,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924083908] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:38,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:38,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:40:38,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004038789] [2021-11-03 04:40:38,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:40:38,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:40:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:40:38,331 INFO L87 Difference]: Start difference. First operand 1475 states and 1824 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:43,657 INFO L93 Difference]: Finished difference Result 2339 states and 2841 transitions. [2021-11-03 04:40:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:40:43,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 04:40:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:43,662 INFO L225 Difference]: With dead ends: 2339 [2021-11-03 04:40:43,663 INFO L226 Difference]: Without dead ends: 2339 [2021-11-03 04:40:43,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:40:43,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2021-11-03 04:40:43,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 1474. [2021-11-03 04:40:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 995 states have (on average 1.8321608040201005) internal successors, (1823), 1473 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1823 transitions. [2021-11-03 04:40:43,687 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1823 transitions. Word has length 66 [2021-11-03 04:40:43,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:43,688 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 1823 transitions. [2021-11-03 04:40:43,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:40:43,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1823 transitions. [2021-11-03 04:40:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:40:43,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:43,689 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:40:43,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:43,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:40:43,891 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:40:43,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:43,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-03 04:40:43,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:40:43,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979790110] [2021-11-03 04:40:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:43,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:40:43,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:40:43,893 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:40:43,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:40:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:44,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:40:44,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:40:44,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:40:44,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:40:44,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-03 04:40:44,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-03 04:40:44,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-03 04:40:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:44,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:40:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:45,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:40:45,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979790110] [2021-11-03 04:40:45,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979790110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:45,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:45,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:40:45,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345954252] [2021-11-03 04:40:45,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:40:45,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:40:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:40:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:40:45,052 INFO L87 Difference]: Start difference. First operand 1474 states and 1823 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:03,842 INFO L93 Difference]: Finished difference Result 2333 states and 2849 transitions. [2021-11-03 04:41:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:41:03,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 04:41:03,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:03,847 INFO L225 Difference]: With dead ends: 2333 [2021-11-03 04:41:03,847 INFO L226 Difference]: Without dead ends: 2333 [2021-11-03 04:41:03,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:41:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2021-11-03 04:41:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 1473. [2021-11-03 04:41:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1473 states, 995 states have (on average 1.8311557788944723) internal successors, (1822), 1472 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1473 states to 1473 states and 1822 transitions. [2021-11-03 04:41:03,868 INFO L78 Accepts]: Start accepts. Automaton has 1473 states and 1822 transitions. Word has length 67 [2021-11-03 04:41:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:03,869 INFO L470 AbstractCegarLoop]: Abstraction has 1473 states and 1822 transitions. [2021-11-03 04:41:03,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1473 states and 1822 transitions. [2021-11-03 04:41:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:41:03,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:03,870 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:03,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:04,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:04,083 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:41:04,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-03 04:41:04,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:04,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347015100] [2021-11-03 04:41:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:04,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:04,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:04,085 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:04,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:41:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:04,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:41:04,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:04,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:04,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:04,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347015100] [2021-11-03 04:41:04,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347015100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:04,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:04,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:41:04,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137522630] [2021-11-03 04:41:04,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:41:04,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:41:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:41:04,863 INFO L87 Difference]: Start difference. First operand 1473 states and 1822 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:05,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:05,014 INFO L93 Difference]: Finished difference Result 2526 states and 3110 transitions. [2021-11-03 04:41:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:41:05,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 71 [2021-11-03 04:41:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:05,018 INFO L225 Difference]: With dead ends: 2526 [2021-11-03 04:41:05,018 INFO L226 Difference]: Without dead ends: 2526 [2021-11-03 04:41:05,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:41:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-03 04:41:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1476. [2021-11-03 04:41:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 998 states have (on average 1.8286573146292586) internal successors, (1825), 1475 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1825 transitions. [2021-11-03 04:41:05,033 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1825 transitions. Word has length 71 [2021-11-03 04:41:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:05,034 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1825 transitions. [2021-11-03 04:41:05,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1825 transitions. [2021-11-03 04:41:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:41:05,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:05,035 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:05,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:05,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:05,242 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:41:05,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-03 04:41:05,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:05,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383206822] [2021-11-03 04:41:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:05,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:05,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:05,243 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:05,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:41:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:05,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:05,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:05,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:06,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:06,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383206822] [2021-11-03 04:41:06,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383206822] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:06,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1981894057] [2021-11-03 04:41:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:06,144 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:41:06,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:41:06,145 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:41:06,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 04:41:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:06,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:06,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:07,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:07,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1981894057] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:07,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262525188] [2021-11-03 04:41:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:07,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:07,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:07,180 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:41:07,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-03 04:41:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:07,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:41:07,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:07,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:08,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262525188] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:08,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:41:08,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:41:08,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887476418] [2021-11-03 04:41:08,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:41:08,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:41:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:41:08,089 INFO L87 Difference]: Start difference. First operand 1476 states and 1825 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:08,517 INFO L93 Difference]: Finished difference Result 2532 states and 3116 transitions. [2021-11-03 04:41:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:41:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:41:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:08,523 INFO L225 Difference]: With dead ends: 2532 [2021-11-03 04:41:08,523 INFO L226 Difference]: Without dead ends: 2532 [2021-11-03 04:41:08,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:41:08,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-11-03 04:41:08,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1482. [2021-11-03 04:41:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1004 states have (on average 1.8237051792828685) internal successors, (1831), 1481 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1831 transitions. [2021-11-03 04:41:08,544 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1831 transitions. Word has length 73 [2021-11-03 04:41:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:08,545 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 1831 transitions. [2021-11-03 04:41:08,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1831 transitions. [2021-11-03 04:41:08,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:41:08,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:08,546 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:08,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:08,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:08,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2021-11-03 04:41:09,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 04:41:09,171 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 666 more)] === [2021-11-03 04:41:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-03 04:41:09,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:09,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882950665] [2021-11-03 04:41:09,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:41:09,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:09,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:09,173 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:09,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 04:41:10,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:41:10,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:41:10,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:41:10,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:10,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:11,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:11,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882950665] [2021-11-03 04:41:11,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882950665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:11,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1035387577] [2021-11-03 04:41:11,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:41:11,019 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:41:11,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:41:11,021 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:41:11,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-03 04:41:12,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:41:12,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:41:12,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:41:12,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:12,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:12,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1035387577] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:12,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442058508] [2021-11-03 04:41:12,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:41:12,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:12,666 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:41:12,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_006b0aa6-5451-4ec1-99fd-08babc86f3c3/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-03 04:41:48,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:41:48,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:41:48,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 04:41:48,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:48,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:41:48,875 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:41:48,875 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 15 treesize of output 15 [2021-11-03 04:41:48,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:41:48,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-03 04:41:49,398 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 04:41:49,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-03 04:41:49,426 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:41:49,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-03 04:41:49,658 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:41:49,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:41:49,718 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:41:49,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:41:50,620 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:41:50,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:41:51,394 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:41:51,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:41:52,809 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:41:52,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:41:52,879 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:41:52,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:41:55,222 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:41:55,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:41:56,875 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:41:56,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:42:01,629 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-11-03 04:42:01,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 82 [2021-11-03 04:42:03,552 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-03 04:42:03,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 105 [2021-11-03 04:42:03,822 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-03 04:42:03,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 48 [2021-11-03 04:42:03,831 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-03 04:42:03,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 21 [2021-11-03 04:42:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:42:03,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:42:34,363 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr282| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr282| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1) (bvadd v_subst_7 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr282| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse2 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr282| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse4 (bvadd v_subst_8 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3))) c_ULTIMATE.start_main_~user~0.base) .cse5)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse5)))))) is different from false