./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V --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 71fe950642bac282d48da6f500677ae534e71a907f9a56d9941372cc95f40daa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:43:17,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:43:17,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:43:18,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:43:18,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:43:18,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:43:18,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:43:18,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:43:18,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:43:18,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:43:18,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:43:18,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:43:18,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:43:18,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:43:18,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:43:18,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:43:18,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:43:18,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:43:18,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:43:18,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:43:18,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:43:18,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:43:18,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:43:18,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:43:18,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:43:18,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:43:18,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:43:18,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:43:18,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:43:18,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:43:18,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:43:18,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:43:18,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:43:18,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:43:18,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:43:18,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:43:18,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:43:18,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:43:18,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:43:18,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:43:18,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:43:18,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:43:18,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:43:18,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:43:18,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:43:18,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:43:18,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:43:18,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:43:18,166 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:43:18,166 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:43:18,167 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:43:18,167 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:43:18,167 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:43:18,167 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:43:18,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:43:18,168 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:43:18,168 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:43:18,168 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:43:18,169 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:43:18,169 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:43:18,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:43:18,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:43:18,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:43:18,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:43:18,171 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:43:18,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:43:18,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:43:18,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:43:18,172 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:43:18,172 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:43:18,172 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:43:18,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:43:18,175 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:43:18,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:43:18,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:43:18,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:43:18,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:43:18,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:18,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:43:18,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:43:18,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:43:18,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:43:18,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:43:18,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:43:18,179 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_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71fe950642bac282d48da6f500677ae534e71a907f9a56d9941372cc95f40daa [2021-11-23 02:43:18,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:43:18,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:43:18,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:43:18,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:43:18,585 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:43:18,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i [2021-11-23 02:43:18,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/data/ba6d341cf/672441a9916941bda9811e48610558a8/FLAG21f1c8452 [2021-11-23 02:43:19,400 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:43:19,401 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i [2021-11-23 02:43:19,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/data/ba6d341cf/672441a9916941bda9811e48610558a8/FLAG21f1c8452 [2021-11-23 02:43:19,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/data/ba6d341cf/672441a9916941bda9811e48610558a8 [2021-11-23 02:43:19,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:43:19,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:43:19,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:19,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:43:19,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:43:19,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:19" (1/1) ... [2021-11-23 02:43:19,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@897ada6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:19, skipping insertion in model container [2021-11-23 02:43:19,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:43:19" (1/1) ... [2021-11-23 02:43:19,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:43:19,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:43:20,099 WARN L230 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_0a8c9ef0-b65c-4906-8cec-650d403982ae/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i[24175,24188] [2021-11-23 02:43:20,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:20,121 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:43:20,212 WARN L230 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_0a8c9ef0-b65c-4906-8cec-650d403982ae/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-1.i[24175,24188] [2021-11-23 02:43:20,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:43:20,252 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:43:20,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20 WrapperNode [2021-11-23 02:43:20,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:43:20,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:20,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:43:20,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:43:20,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,335 INFO L137 Inliner]: procedures = 122, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2021-11-23 02:43:20,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:43:20,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:43:20,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:43:20,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:43:20,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:43:20,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:43:20,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:43:20,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:43:20,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (1/1) ... [2021-11-23 02:43:20,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:43:20,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:20,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:43:20,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:43:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-23 02:43:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-23 02:43:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:43:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:43:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:43:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:43:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:43:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:43:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:43:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:43:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:43:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:43:20,645 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:43:20,647 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:43:20,706 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-23 02:43:21,128 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:43:21,187 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:43:21,188 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:43:21,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:21 BoogieIcfgContainer [2021-11-23 02:43:21,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:43:21,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:43:21,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:43:21,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:43:21,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:43:19" (1/3) ... [2021-11-23 02:43:21,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c3334e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:21, skipping insertion in model container [2021-11-23 02:43:21,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:43:20" (2/3) ... [2021-11-23 02:43:21,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c3334e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:43:21, skipping insertion in model container [2021-11-23 02:43:21,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:43:21" (3/3) ... [2021-11-23 02:43:21,208 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-1.i [2021-11-23 02:43:21,222 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:43:21,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-11-23 02:43:21,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:43:21,303 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 [2021-11-23 02:43:21,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-11-23 02:43:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:21,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:43:21,356 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:21,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:43:21,357 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:21,365 INFO L85 PathProgramCache]: Analyzing trace with hash 166672, now seen corresponding path program 1 times [2021-11-23 02:43:21,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:21,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816623364] [2021-11-23 02:43:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:21,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:21,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:21,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816623364] [2021-11-23 02:43:21,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816623364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:21,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:21,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:43:21,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474962945] [2021-11-23 02:43:21,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:21,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:21,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:21,645 INFO L87 Difference]: Start difference. First operand has 66 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 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), 2 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) [2021-11-23 02:43:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:21,776 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2021-11-23 02:43:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:21,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2021-11-23 02:43:21,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:21,789 INFO L225 Difference]: With dead ends: 80 [2021-11-23 02:43:21,789 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 02:43:21,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:21,796 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:21,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 46 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 02:43:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2021-11-23 02:43:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 2.103448275862069) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-11-23 02:43:21,847 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 3 [2021-11-23 02:43:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:21,848 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-11-23 02:43:21,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2021-11-23 02:43:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-11-23 02:43:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 02:43:21,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:21,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 02:43:21,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:43:21,851 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:21,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:21,852 INFO L85 PathProgramCache]: Analyzing trace with hash 166673, now seen corresponding path program 1 times [2021-11-23 02:43:21,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:21,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141450234] [2021-11-23 02:43:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:21,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:21,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:21,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141450234] [2021-11-23 02:43:21,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141450234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:21,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:21,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 02:43:21,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226492051] [2021-11-23 02:43:21,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:21,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:21,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:21,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:21,919 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2021-11-23 02:43:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:21,992 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2021-11-23 02:43:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:21,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2021-11-23 02:43:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:21,995 INFO L225 Difference]: With dead ends: 53 [2021-11-23 02:43:21,995 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 02:43:21,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:21,998 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:21,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:22,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 02:43:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-23 02:43:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-23 02:43:22,008 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 3 [2021-11-23 02:43:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:22,009 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-23 02:43:22,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2021-11-23 02:43:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-23 02:43:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:43:22,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:22,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:43:22,011 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -38731617, now seen corresponding path program 1 times [2021-11-23 02:43:22,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:22,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985599204] [2021-11-23 02:43:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:22,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:22,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985599204] [2021-11-23 02:43:22,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985599204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:22,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:22,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:43:22,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898058625] [2021-11-23 02:43:22,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:22,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:22,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:22,126 INFO L87 Difference]: Start difference. First operand 53 states and 57 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) [2021-11-23 02:43:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:22,270 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-11-23 02:43:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:22,271 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 [2021-11-23 02:43:22,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:22,277 INFO L225 Difference]: With dead ends: 87 [2021-11-23 02:43:22,277 INFO L226 Difference]: Without dead ends: 87 [2021-11-23 02:43:22,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:22,287 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 44 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:22,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 83 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:22,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-23 02:43:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 51. [2021-11-23 02:43:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-11-23 02:43:22,308 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 8 [2021-11-23 02:43:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:22,309 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-11-23 02:43:22,309 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) [2021-11-23 02:43:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-11-23 02:43:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:43:22,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:22,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:43:22,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash -38731616, now seen corresponding path program 1 times [2021-11-23 02:43:22,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:22,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439687781] [2021-11-23 02:43:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:22,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:22,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439687781] [2021-11-23 02:43:22,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439687781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:22,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:22,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:43:22,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433074408] [2021-11-23 02:43:22,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:22,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:22,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:22,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:22,455 INFO L87 Difference]: Start difference. First operand 51 states and 55 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) [2021-11-23 02:43:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:22,564 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2021-11-23 02:43:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:22,565 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 [2021-11-23 02:43:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:22,570 INFO L225 Difference]: With dead ends: 87 [2021-11-23 02:43:22,570 INFO L226 Difference]: Without dead ends: 87 [2021-11-23 02:43:22,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:22,580 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:22,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 92 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-23 02:43:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 49. [2021-11-23 02:43:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-11-23 02:43:22,596 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 8 [2021-11-23 02:43:22,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:22,597 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-11-23 02:43:22,598 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) [2021-11-23 02:43:22,598 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-11-23 02:43:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 02:43:22,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:22,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:43:22,605 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash -38623504, now seen corresponding path program 1 times [2021-11-23 02:43:22,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:22,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757485745] [2021-11-23 02:43:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:22,668 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:22,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757485745] [2021-11-23 02:43:22,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757485745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:22,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:22,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:43:22,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130333204] [2021-11-23 02:43:22,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:22,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:43:22,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:22,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:43:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:22,672 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-11-23 02:43:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:22,699 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-11-23 02:43:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:43:22,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2021-11-23 02:43:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:22,701 INFO L225 Difference]: With dead ends: 56 [2021-11-23 02:43:22,701 INFO L226 Difference]: Without dead ends: 56 [2021-11-23 02:43:22,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:43:22,703 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:22,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 85 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:43:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-23 02:43:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-11-23 02:43:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.8) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-23 02:43:22,710 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 8 [2021-11-23 02:43:22,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:22,710 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-23 02:43:22,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-11-23 02:43:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-23 02:43:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:43:22,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:22,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:22,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:43:22,712 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:22,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1433622178, now seen corresponding path program 1 times [2021-11-23 02:43:22,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:22,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361692593] [2021-11-23 02:43:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:22,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:22,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:22,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361692593] [2021-11-23 02:43:22,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361692593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:22,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:22,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:22,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333904622] [2021-11-23 02:43:22,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:22,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:43:22,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:43:22,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:22,838 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:22,977 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-11-23 02:43:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:43:22,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-23 02:43:22,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:22,980 INFO L225 Difference]: With dead ends: 72 [2021-11-23 02:43:22,980 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 02:43:22,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:43:22,982 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 122 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:22,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 48 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:22,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 02:43:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2021-11-23 02:43:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-11-23 02:43:23,003 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 10 [2021-11-23 02:43:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:23,003 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-11-23 02:43:23,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-11-23 02:43:23,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 02:43:23,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:23,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:23,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:43:23,005 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1433622179, now seen corresponding path program 1 times [2021-11-23 02:43:23,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:23,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148479600] [2021-11-23 02:43:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:23,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:23,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:23,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148479600] [2021-11-23 02:43:23,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148479600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:23,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:23,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:43:23,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804836064] [2021-11-23 02:43:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:23,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:23,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:23,165 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:23,255 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-11-23 02:43:23,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:43:23,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-23 02:43:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:23,257 INFO L225 Difference]: With dead ends: 54 [2021-11-23 02:43:23,257 INFO L226 Difference]: Without dead ends: 54 [2021-11-23 02:43:23,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:23,259 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:23,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 52 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-23 02:43:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-23 02:43:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-11-23 02:43:23,273 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2021-11-23 02:43:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:23,274 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-11-23 02:43:23,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-11-23 02:43:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:43:23,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:23,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:23,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:43:23,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash -113664359, now seen corresponding path program 1 times [2021-11-23 02:43:23,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:23,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137072545] [2021-11-23 02:43:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:23,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:23,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:23,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137072545] [2021-11-23 02:43:23,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137072545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:23,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:23,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:43:23,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546893874] [2021-11-23 02:43:23,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:23,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:43:23,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:43:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:43:23,380 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:23,459 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-11-23 02:43:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:43:23,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:43:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:23,464 INFO L225 Difference]: With dead ends: 69 [2021-11-23 02:43:23,467 INFO L226 Difference]: Without dead ends: 69 [2021-11-23 02:43:23,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:23,470 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:23,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 52 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-23 02:43:23,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2021-11-23 02:43:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-11-23 02:43:23,484 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 13 [2021-11-23 02:43:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:23,484 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-11-23 02:43:23,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-11-23 02:43:23,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:43:23,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:23,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:23,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:43:23,486 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -113664358, now seen corresponding path program 1 times [2021-11-23 02:43:23,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:23,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389655576] [2021-11-23 02:43:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:23,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:23,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389655576] [2021-11-23 02:43:23,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389655576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492876723] [2021-11-23 02:43:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:23,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:23,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:23,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:23,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:43:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:23,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:43:23,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:23,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:23,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492876723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:43:23,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1299660813] [2021-11-23 02:43:23,914 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-23 02:43:23,914 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:43:23,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:43:23,931 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:43:23,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:43:24,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:43:24,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:24,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:24,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-23 02:43:24,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:24,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-23 02:43:24,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:24,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 02:43:24,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-23 02:43:24,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-23 02:43:24,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 02:43:24,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-23 02:43:24,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:43:24,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:43:24,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 02:43:24,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 02:43:24,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-23 02:43:24,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,905 INFO L354 Elim1Store]: treesize reduction 54, result has 14.3 percent of original size [2021-11-23 02:43:24,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 139 [2021-11-23 02:43:24,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,959 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-23 02:43:24,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 144 [2021-11-23 02:43:24,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:24,998 INFO L354 Elim1Store]: treesize reduction 86, result has 9.5 percent of original size [2021-11-23 02:43:24,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 132 treesize of output 128 [2021-11-23 02:43:25,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2021-11-23 02:43:25,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,410 INFO L354 Elim1Store]: treesize reduction 106, result has 19.7 percent of original size [2021-11-23 02:43:25,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 486 treesize of output 467 [2021-11-23 02:43:25,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,461 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:43:25,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 482 treesize of output 463 [2021-11-23 02:43:25,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,583 INFO L354 Elim1Store]: treesize reduction 154, result has 18.1 percent of original size [2021-11-23 02:43:25,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 463 treesize of output 465 [2021-11-23 02:43:25,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,812 INFO L354 Elim1Store]: treesize reduction 105, result has 2.8 percent of original size [2021-11-23 02:43:25,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 500 treesize of output 469 [2021-11-23 02:43:25,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:25,900 INFO L354 Elim1Store]: treesize reduction 169, result has 1.7 percent of original size [2021-11-23 02:43:25,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 479 treesize of output 461 [2021-11-23 02:43:25,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:25,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:26,010 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-11-23 02:43:26,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 458 treesize of output 454 [2021-11-23 02:43:26,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:26,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:26,367 INFO L354 Elim1Store]: treesize reduction 264, result has 15.1 percent of original size [2021-11-23 02:43:26,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 729 treesize of output 600 [2021-11-23 02:43:26,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:26,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:26,585 INFO L354 Elim1Store]: treesize reduction 474, result has 9.2 percent of original size [2021-11-23 02:43:26,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 726 treesize of output 680 [2021-11-23 02:43:26,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:26,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:26,723 INFO L354 Elim1Store]: treesize reduction 216, result has 16.0 percent of original size [2021-11-23 02:43:26,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 677 treesize of output 577 [2021-11-23 02:43:27,201 INFO L354 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2021-11-23 02:43:27,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 617 treesize of output 611 [2021-11-23 02:43:27,561 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 [2021-11-23 02:43:27,571 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 1 [2021-11-23 02:43:27,584 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 [2021-11-23 02:43:27,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:27,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:27,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:27,655 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 11 treesize of output 7 [2021-11-23 02:43:27,719 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:43:27,719 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 169 [2021-11-23 02:43:27,747 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-23 02:43:27,747 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 165 [2021-11-23 02:43:27,772 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-23 02:43:27,773 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 195 treesize of output 149 [2021-11-23 02:43:27,878 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-23 02:43:27,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2021-11-23 02:43:27,900 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:43:27,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2021-11-23 02:43:28,013 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 1 [2021-11-23 02:43:28,022 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 [2021-11-23 02:43:28,032 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 [2021-11-23 02:43:28,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:28,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:28,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:28,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:28,109 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 11 treesize of output 7 [2021-11-23 02:43:28,177 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:43:28,178 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 169 [2021-11-23 02:43:28,207 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-23 02:43:28,208 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 165 [2021-11-23 02:43:28,237 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-23 02:43:28,237 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 195 treesize of output 149 [2021-11-23 02:43:28,322 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 [2021-11-23 02:43:28,335 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 [2021-11-23 02:43:28,350 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 1 [2021-11-23 02:43:28,469 INFO L354 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2021-11-23 02:43:28,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2021-11-23 02:43:28,652 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-23 02:43:28,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2021-11-23 02:43:28,685 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:30,357 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1162#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (<= (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (<= 0 |#NULL.base|) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= |#NULL.base| 0) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12)) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|))' at error location [2021-11-23 02:43:30,357 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:43:30,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:43:30,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-23 02:43:30,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070289462] [2021-11-23 02:43:30,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:43:30,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:43:30,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:30,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:43:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:43:30,360 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:30,403 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-11-23 02:43:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:43:30,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:43:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:30,405 INFO L225 Difference]: With dead ends: 65 [2021-11-23 02:43:30,405 INFO L226 Difference]: Without dead ends: 65 [2021-11-23 02:43:30,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-11-23 02:43:30,406 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:30,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 124 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:43:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-23 02:43:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-11-23 02:43:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 62 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-11-23 02:43:30,411 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 13 [2021-11-23 02:43:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:30,412 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-11-23 02:43:30,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-11-23 02:43:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:43:30,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:30,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:30,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:30,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 02:43:30,629 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:30,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1961162740, now seen corresponding path program 1 times [2021-11-23 02:43:30,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:30,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434942768] [2021-11-23 02:43:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:30,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:30,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:30,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434942768] [2021-11-23 02:43:30,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434942768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:30,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747747431] [2021-11-23 02:43:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:30,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:30,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:30,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:43:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:30,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:43:30,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:30,803 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 [2021-11-23 02:43:30,810 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 [2021-11-23 02:43:30,891 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:43:30,891 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 22 treesize of output 24 [2021-11-23 02:43:30,899 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:43:30,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-23 02:43:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:30,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:31,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747747431] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:43:31,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [197596440] [2021-11-23 02:43:31,212 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 02:43:31,212 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:43:31,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:43:31,213 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:43:31,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:43:31,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:43:31,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:31,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:31,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-23 02:43:31,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-23 02:43:31,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:31,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:31,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-23 02:43:31,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 02:43:31,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-23 02:43:31,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 02:43:31,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:43:31,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:43:31,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-23 02:43:31,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 02:43:31,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-23 02:43:31,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 02:43:31,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,812 INFO L354 Elim1Store]: treesize reduction 54, result has 14.3 percent of original size [2021-11-23 02:43:31,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 139 [2021-11-23 02:43:31,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,851 INFO L354 Elim1Store]: treesize reduction 86, result has 9.5 percent of original size [2021-11-23 02:43:31,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 163 treesize of output 159 [2021-11-23 02:43:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,886 INFO L354 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2021-11-23 02:43:31,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 131 [2021-11-23 02:43:31,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:31,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 54 [2021-11-23 02:43:32,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,120 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:43:32,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 486 treesize of output 467 [2021-11-23 02:43:32,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,212 INFO L354 Elim1Store]: treesize reduction 106, result has 19.7 percent of original size [2021-11-23 02:43:32,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 467 treesize of output 448 [2021-11-23 02:43:32,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,323 INFO L354 Elim1Store]: treesize reduction 154, result has 18.1 percent of original size [2021-11-23 02:43:32,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 463 treesize of output 465 [2021-11-23 02:43:32,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,546 INFO L354 Elim1Store]: treesize reduction 157, result has 8.7 percent of original size [2021-11-23 02:43:32,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 500 treesize of output 494 [2021-11-23 02:43:32,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:32,635 INFO L354 Elim1Store]: treesize reduction 101, result has 6.5 percent of original size [2021-11-23 02:43:32,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 485 treesize of output 458 [2021-11-23 02:43:32,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,718 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-11-23 02:43:32,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 470 treesize of output 466 [2021-11-23 02:43:32,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:32,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:33,090 INFO L354 Elim1Store]: treesize reduction 362, result has 12.1 percent of original size [2021-11-23 02:43:33,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 765 treesize of output 632 [2021-11-23 02:43:33,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:33,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:33,284 INFO L354 Elim1Store]: treesize reduction 310, result has 11.9 percent of original size [2021-11-23 02:43:33,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 744 treesize of output 620 [2021-11-23 02:43:33,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:33,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:33,422 INFO L354 Elim1Store]: treesize reduction 474, result has 9.2 percent of original size [2021-11-23 02:43:33,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 752 treesize of output 706 [2021-11-23 02:43:33,768 INFO L354 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2021-11-23 02:43:33,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 653 treesize of output 647 [2021-11-23 02:43:34,076 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 1 [2021-11-23 02:43:34,084 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 [2021-11-23 02:43:34,094 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 [2021-11-23 02:43:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:34,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:34,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:34,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:34,151 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 11 treesize of output 7 [2021-11-23 02:43:34,234 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:43:34,235 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 169 [2021-11-23 02:43:34,263 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-23 02:43:34,263 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 165 [2021-11-23 02:43:34,287 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-23 02:43:34,288 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 195 treesize of output 149 [2021-11-23 02:43:34,378 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-23 02:43:34,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2021-11-23 02:43:34,414 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:43:34,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2021-11-23 02:43:34,477 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 [2021-11-23 02:43:34,488 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 [2021-11-23 02:43:34,499 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 1 [2021-11-23 02:43:34,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:34,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:34,554 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 11 treesize of output 7 [2021-11-23 02:43:34,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:34,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:34,625 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:43:34,625 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 169 [2021-11-23 02:43:34,653 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-23 02:43:34,654 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 165 [2021-11-23 02:43:34,676 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-23 02:43:34,677 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 195 treesize of output 149 [2021-11-23 02:43:34,780 INFO L354 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2021-11-23 02:43:34,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2021-11-23 02:43:34,915 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-23 02:43:34,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2021-11-23 02:43:34,958 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:36,278 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1395#(and (= (select |#valid| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (= (select (select |#memory_int| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~data#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= |ULTIMATE.start_main_~data_init~0#1| 1) (<= 0 |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (<= |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12)) (= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|)) (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 4))) (= |#NULL.base| 0))' at error location [2021-11-23 02:43:36,278 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:43:36,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:43:36,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2021-11-23 02:43:36,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987003349] [2021-11-23 02:43:36,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:43:36,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:43:36,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:36,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:43:36,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:43:36,281 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:36,459 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-11-23 02:43:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:43:36,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 02:43:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:36,462 INFO L225 Difference]: With dead ends: 78 [2021-11-23 02:43:36,462 INFO L226 Difference]: Without dead ends: 78 [2021-11-23 02:43:36,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:43:36,463 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 143 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:36,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 93 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 62 Unchecked, 0.1s Time] [2021-11-23 02:43:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-23 02:43:36,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2021-11-23 02:43:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-11-23 02:43:36,468 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 15 [2021-11-23 02:43:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:36,468 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-11-23 02:43:36,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-11-23 02:43:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:43:36,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:36,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:36,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:36,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:43:36,685 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2137756159, now seen corresponding path program 1 times [2021-11-23 02:43:36,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:36,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168605621] [2021-11-23 02:43:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:36,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:43:36,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:36,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168605621] [2021-11-23 02:43:36,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168605621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:36,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:36,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:43:36,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544603549] [2021-11-23 02:43:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:36,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:43:36,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:43:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:36,785 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-11-23 02:43:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:36,896 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2021-11-23 02:43:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:43:36,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 29 [2021-11-23 02:43:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:36,898 INFO L225 Difference]: With dead ends: 76 [2021-11-23 02:43:36,898 INFO L226 Difference]: Without dead ends: 76 [2021-11-23 02:43:36,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:43:36,899 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:36,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 43 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-23 02:43:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2021-11-23 02:43:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2021-11-23 02:43:36,904 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 29 [2021-11-23 02:43:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:36,904 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2021-11-23 02:43:36,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-11-23 02:43:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2021-11-23 02:43:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:43:36,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:36,906 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:36,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 02:43:36,907 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2137756158, now seen corresponding path program 1 times [2021-11-23 02:43:36,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:36,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716948143] [2021-11-23 02:43:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:36,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:43:36,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:36,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716948143] [2021-11-23 02:43:36,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716948143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:36,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:36,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:43:36,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335807508] [2021-11-23 02:43:36,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:36,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:43:36,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:43:36,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:43:36,985 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:37,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:37,089 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-11-23 02:43:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:43:37,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-23 02:43:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:37,091 INFO L225 Difference]: With dead ends: 64 [2021-11-23 02:43:37,091 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 02:43:37,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:43:37,093 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 91 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:37,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 48 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 02:43:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-11-23 02:43:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.346938775510204) internal successors, (66), 60 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) [2021-11-23 02:43:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-11-23 02:43:37,098 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 29 [2021-11-23 02:43:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:37,098 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-11-23 02:43:37,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-11-23 02:43:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 02:43:37,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:37,100 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:37,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 02:43:37,101 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:37,101 INFO L85 PathProgramCache]: Analyzing trace with hash -118625175, now seen corresponding path program 1 times [2021-11-23 02:43:37,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:37,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318506002] [2021-11-23 02:43:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:37,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:43:37,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:37,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318506002] [2021-11-23 02:43:37,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318506002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:37,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984242214] [2021-11-23 02:43:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:37,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:37,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:37,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:43:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:37,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-23 02:43:37,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:37,810 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:43:37,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:43:37,979 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-23 02:43:37,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:43:38,220 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-23 02:43:38,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 treesize of output 29 [2021-11-23 02:43:38,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:43:38,396 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-23 02:43:38,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2021-11-23 02:43:38,470 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-23 02:43:38,471 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 31 treesize of output 15 [2021-11-23 02:43:38,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-23 02:43:38,559 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 15 treesize of output 7 [2021-11-23 02:43:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:38,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:43:43,749 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_circular_create_~last~0#1.offset| Int) (|ULTIMATE.start_dll_circular_create_~head~0#1.offset| Int) (v_DerPreprocessor_3 Int) (v_DerPreprocessor_2 Int)) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8) v_DerPreprocessor_3)))) (store .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4) v_DerPreprocessor_2))) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|))) is different from false [2021-11-23 02:43:44,429 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-11-23 02:43:44,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 33 [2021-11-23 02:43:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-23 02:43:44,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984242214] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:43:44,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1637900528] [2021-11-23 02:43:44,543 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-23 02:43:44,544 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:43:44,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:43:44,545 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:43:44,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:43:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:43:44,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-23 02:43:44,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:44,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-23 02:43:44,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:44,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-23 02:43:44,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-23 02:43:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2021-11-23 02:43:44,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2021-11-23 02:43:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:43:44,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-11-23 02:43:44,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-11-23 02:43:44,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 02:43:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:44,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-11-23 02:43:45,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-23 02:43:45,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-11-23 02:43:45,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2021-11-23 02:43:45,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2021-11-23 02:43:45,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2021-11-23 02:43:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,371 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:43:45,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 453 treesize of output 434 [2021-11-23 02:43:45,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,449 INFO L354 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2021-11-23 02:43:45,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 434 treesize of output 427 [2021-11-23 02:43:45,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,509 INFO L354 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2021-11-23 02:43:45,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 430 treesize of output 423 [2021-11-23 02:43:45,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,701 INFO L354 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2021-11-23 02:43:45,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 467 treesize of output 463 [2021-11-23 02:43:45,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,758 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:43:45,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 463 treesize of output 448 [2021-11-23 02:43:45,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:45,793 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:43:45,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 448 treesize of output 433 [2021-11-23 02:43:45,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:45,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:46,059 INFO L354 Elim1Store]: treesize reduction 190, result has 17.0 percent of original size [2021-11-23 02:43:46,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 660 treesize of output 543 [2021-11-23 02:43:46,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:46,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:46,190 INFO L354 Elim1Store]: treesize reduction 402, result has 9.5 percent of original size [2021-11-23 02:43:46,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 657 treesize of output 611 [2021-11-23 02:43:46,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:46,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:46,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:46,268 INFO L354 Elim1Store]: treesize reduction 184, result has 18.2 percent of original size [2021-11-23 02:43:46,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 608 treesize of output 565 [2021-11-23 02:43:46,584 INFO L354 Elim1Store]: treesize reduction 184, result has 14.8 percent of original size [2021-11-23 02:43:46,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 548 treesize of output 542 [2021-11-23 02:43:46,822 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 1 [2021-11-23 02:43:46,840 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 [2021-11-23 02:43:46,849 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 [2021-11-23 02:43:46,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:46,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:46,883 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 11 treesize of output 7 [2021-11-23 02:43:46,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:46,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:46,961 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:43:46,961 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 169 [2021-11-23 02:43:46,985 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-23 02:43:46,985 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 165 [2021-11-23 02:43:47,009 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-23 02:43:47,010 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 195 treesize of output 149 [2021-11-23 02:43:47,101 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-23 02:43:47,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2021-11-23 02:43:47,132 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:43:47,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2021-11-23 02:43:47,184 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 [2021-11-23 02:43:47,193 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 [2021-11-23 02:43:47,218 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 1 [2021-11-23 02:43:47,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:47,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:47,261 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 11 treesize of output 7 [2021-11-23 02:43:47,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:47,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:47,332 INFO L354 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2021-11-23 02:43:47,333 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 169 [2021-11-23 02:43:47,362 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-23 02:43:47,362 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 165 [2021-11-23 02:43:47,386 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-23 02:43:47,386 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 195 treesize of output 149 [2021-11-23 02:43:47,457 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 [2021-11-23 02:43:47,468 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 [2021-11-23 02:43:47,477 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 1 [2021-11-23 02:43:47,520 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 1 [2021-11-23 02:43:47,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:47,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:47,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:47,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-23 02:43:47,699 INFO L354 Elim1Store]: treesize reduction 32, result has 58.4 percent of original size [2021-11-23 02:43:47,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 66 [2021-11-23 02:43:47,816 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-23 02:43:47,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2021-11-23 02:43:47,838 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:51,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2047#(and (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4))) (= |ULTIMATE.start_main_~data_new~0#1| 1) (<= (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|)) (<= 0 |#NULL.base|) (<= (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 12) (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|)) (<= 1 |ULTIMATE.start_main_~data_init~0#1|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 5) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_main_~head~1#1.offset|) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1) (not (= |ULTIMATE.start_main_old_#valid#1| |#valid|)) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_main_~data_init~0#1| 1) (<= |#NULL.offset| 0) (<= 5 |ULTIMATE.start_main_~len~0#1|) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1) (= |ULTIMATE.start_main_~head~1#1.offset| |ULTIMATE.start_main_~ptr~0#1.offset|) (not (= |ULTIMATE.start_main_~data_init~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_main_~head~1#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |ULTIMATE.start_main_~len~0#1| 5) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (<= |#NULL.base| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= 5 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~ptr~0#1.base| |ULTIMATE.start_main_~head~1#1.base|) (= |ULTIMATE.start_main_#res#1| 1) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (<= 0 |ULTIMATE.start_main_~ptr~0#1.offset|))' at error location [2021-11-23 02:43:51,269 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:43:51,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:43:51,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 31 [2021-11-23 02:43:51,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846901376] [2021-11-23 02:43:51,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:43:51,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 02:43:51,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 02:43:51,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1800, Unknown=6, NotChecked=88, Total=2162 [2021-11-23 02:43:51,273 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 32 states, 32 states have (on average 2.5625) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:56,550 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2021-11-23 02:43:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:43:56,551 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.5625) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 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 32 [2021-11-23 02:43:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:56,551 INFO L225 Difference]: With dead ends: 76 [2021-11-23 02:43:56,552 INFO L226 Difference]: Without dead ends: 76 [2021-11-23 02:43:56,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=476, Invalid=2602, Unknown=6, NotChecked=108, Total=3192 [2021-11-23 02:43:56,555 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:56,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 289 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 328 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2021-11-23 02:43:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-23 02:43:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2021-11-23 02:43:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-11-23 02:43:56,558 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 32 [2021-11-23 02:43:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:56,559 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-11-23 02:43:56,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.5625) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:56,559 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-11-23 02:43:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:43:56,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:56,561 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:56,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:56,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 02:43:56,762 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1965604241, now seen corresponding path program 1 times [2021-11-23 02:43:56,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:56,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568778937] [2021-11-23 02:43:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:56,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:43:56,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:56,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568778937] [2021-11-23 02:43:56,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568778937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:56,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:56,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:43:56,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613413273] [2021-11-23 02:43:56,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:56,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:43:56,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:43:56,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:43:56,895 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:57,053 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2021-11-23 02:43:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:43:57,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2021-11-23 02:43:57,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:57,055 INFO L225 Difference]: With dead ends: 80 [2021-11-23 02:43:57,055 INFO L226 Difference]: Without dead ends: 80 [2021-11-23 02:43:57,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:43:57,056 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 107 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:57,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 49 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-23 02:43:57,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-11-23 02:43:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 59 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) [2021-11-23 02:43:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-11-23 02:43:57,059 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2021-11-23 02:43:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:57,060 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-11-23 02:43:57,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-11-23 02:43:57,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:43:57,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:57,061 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:57,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 02:43:57,062 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:57,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:57,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1965604242, now seen corresponding path program 1 times [2021-11-23 02:43:57,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:57,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100201759] [2021-11-23 02:43:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:57,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:43:57,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100201759] [2021-11-23 02:43:57,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100201759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:43:57,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:43:57,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:43:57,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135244139] [2021-11-23 02:43:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:43:57,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:43:57,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:43:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:43:57,199 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:57,342 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2021-11-23 02:43:57,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:43:57,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 02:43:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:57,343 INFO L225 Difference]: With dead ends: 62 [2021-11-23 02:43:57,343 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 02:43:57,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:43:57,345 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 95 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:57,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 49 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:43:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 02:43:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2021-11-23 02:43:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-11-23 02:43:57,349 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 34 [2021-11-23 02:43:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:57,350 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-11-23 02:43:57,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:43:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-11-23 02:43:57,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:43:57,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:57,354 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:57,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 02:43:57,354 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 28 more)] === [2021-11-23 02:43:57,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1965604279, now seen corresponding path program 1 times [2021-11-23 02:43:57,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:57,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009589586] [2021-11-23 02:43:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:57,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:43:57,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:57,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009589586] [2021-11-23 02:43:57,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009589586] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:57,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506674207] [2021-11-23 02:43:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:57,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:57,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:57,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:57,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a8c9ef0-b65c-4906-8cec-650d403982ae/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:43:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-23 02:43:57,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:57,897 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:43:57,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:43:58,023 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-23 02:43:58,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2021-11-23 02:43:58,265 INFO L354 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2021-11-23 02:43:58,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 35 treesize of output 53 [2021-11-23 02:43:58,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:43:58,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:58,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 02:43:58,596 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 02:43:58,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 58 [2021-11-23 02:43:58,892 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-23 02:43:58,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 70 [2021-11-23 02:43:59,141 INFO L354 Elim1Store]: treesize reduction 136, result has 20.0 percent of original size [2021-11-23 02:43:59,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 108 [2021-11-23 02:44:01,519 INFO L354 Elim1Store]: treesize reduction 228, result has 14.0 percent of original size [2021-11-23 02:44:01,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 192 treesize of output 105 [2021-11-23 02:44:01,798 INFO L354 Elim1Store]: treesize reduction 146, result has 2.0 percent of original size [2021-11-23 02:44:01,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 75 [2021-11-23 02:44:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:44:01,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:44:08,001 INFO L354 Elim1Store]: treesize reduction 200, result has 26.5 percent of original size [2021-11-23 02:44:08,002 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 108 treesize of output 97 [2021-11-23 02:44:08,023 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:44:08,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 111 [2021-11-23 02:44:08,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 4 [2021-11-23 02:44:08,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 4 [2021-11-23 02:44:08,265 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 02:44:08,266 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 17 treesize of output 9 [2021-11-23 02:44:08,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:44:08,367 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:44:08,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 66 treesize of output 118