./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:17:06,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:17:06,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:17:06,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:17:06,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:17:06,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:17:06,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:17:06,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:17:06,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:17:06,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:17:06,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:17:06,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:17:06,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:17:06,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:17:06,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:17:06,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:17:06,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:17:06,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:17:06,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:17:06,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:17:06,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:17:06,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:17:06,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:17:06,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:17:06,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:17:06,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:17:06,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:17:06,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:17:06,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:17:06,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:17:06,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:17:06,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:17:06,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:17:06,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:17:06,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:17:06,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:17:06,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:17:06,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:17:06,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:17:06,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:17:06,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:17:06,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 05:17:06,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:17:06,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:17:06,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:17:06,170 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:17:06,170 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:17:06,170 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:17:06,171 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:17:06,171 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:17:06,171 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:17:06,171 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:17:06,172 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:17:06,182 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:17:06,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:17:06,182 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:17:06,183 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:17:06,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:17:06,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:17:06,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:17:06,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:17:06,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:17:06,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:17:06,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:17:06,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:17:06,185 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:17:06,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:17:06,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:17:06,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:17:06,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:17:06,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:17:06,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:17:06,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:17:06,186 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:17:06,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:17:06,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:17:06,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:17:06,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:17:06,187 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_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2021-11-03 05:17:06,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:17:06,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:17:06,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:17:06,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:17:06,487 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:17:06,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-03 05:17:06,553 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/2be226e2e/96a63bfa8ed84049a3b3c1424ce8189f/FLAG918f92aa0 [2021-11-03 05:17:07,347 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:17:07,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-03 05:17:07,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/2be226e2e/96a63bfa8ed84049a3b3c1424ce8189f/FLAG918f92aa0 [2021-11-03 05:17:07,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/2be226e2e/96a63bfa8ed84049a3b3c1424ce8189f [2021-11-03 05:17:07,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:17:07,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:17:07,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:17:07,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:17:07,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:17:07,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:07" (1/1) ... [2021-11-03 05:17:07,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31925f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:07, skipping insertion in model container [2021-11-03 05:17:07,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:07" (1/1) ... [2021-11-03 05:17:07,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:17:08,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:17:08,296 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-03 05:17:08,307 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-03 05:17:08,332 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:17:08,347 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:17:09,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,158 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,159 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:09,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:17:09,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:17:09,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:17:09,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:17:09,542 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:17:09,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:17:09,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:17:09,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:17:09,546 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:17:09,546 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:17:09,737 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:17:09,776 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 05:17:09,783 INFO L168 Benchmark]: Toolchain (without parser) took 1877.03 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 65.5 MB in the beginning and 81.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:09,784 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:17:09,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1875.52 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 65.3 MB in the beginning and 81.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:17:09,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory is still 69.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1875.52 ms. Allocated memory was 90.2 MB in the beginning and 136.3 MB in the end (delta: 46.1 MB). Free memory was 65.3 MB in the beginning and 81.7 MB in the end (delta: -16.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:17:12,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:17:12,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:17:12,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:17:12,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:17:12,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:17:12,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:17:12,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:17:12,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:17:12,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:17:12,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:17:12,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:17:12,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:17:12,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:17:12,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:17:12,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:17:12,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:17:12,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:17:12,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:17:12,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:17:12,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:17:12,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:17:12,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:17:12,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:17:12,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:17:12,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:17:12,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:17:12,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:17:12,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:17:12,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:17:12,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:17:12,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:17:12,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:17:12,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:17:12,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:17:12,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:17:12,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:17:12,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:17:12,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:17:12,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:17:12,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:17:12,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 05:17:12,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:17:12,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:17:12,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:17:12,292 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:17:12,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:17:12,292 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:17:12,292 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:17:12,293 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:17:12,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:17:12,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:17:12,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:17:12,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:17:12,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:17:12,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:17:12,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:17:12,295 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:17:12,295 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:17:12,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:17:12,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:17:12,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:17:12,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:17:12,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:17:12,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:17:12,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:17:12,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:17:12,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:17:12,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:17:12,297 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:17:12,298 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:12,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:17:12,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:17:12,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:17:12,298 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2021-11-03 05:17:12,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:17:12,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:17:12,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:17:12,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:17:12,774 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:17:12,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-03 05:17:12,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/b4a3bf2cd/d153e347a63f40d88bd089983a357a77/FLAGf28c9cfa4 [2021-11-03 05:17:13,797 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:17:13,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2021-11-03 05:17:13,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/b4a3bf2cd/d153e347a63f40d88bd089983a357a77/FLAGf28c9cfa4 [2021-11-03 05:17:13,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/data/b4a3bf2cd/d153e347a63f40d88bd089983a357a77 [2021-11-03 05:17:13,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:17:13,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:17:13,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:17:13,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:17:13,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:17:13,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:13" (1/1) ... [2021-11-03 05:17:13,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6baaed18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:13, skipping insertion in model container [2021-11-03 05:17:13,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:13" (1/1) ... [2021-11-03 05:17:13,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:17:13,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:17:14,297 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-03 05:17:14,303 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-03 05:17:14,331 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:17:14,344 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:17:15,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,264 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:17:15,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:17:15,640 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:17:15,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:17:15,643 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:17:15,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:17:15,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:17:15,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:17:15,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:17:15,646 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:17:15,799 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:17:15,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:17:15,849 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:17:15,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:17:15,931 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-03 05:17:15,932 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-03 05:17:15,933 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:17:15,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:17:15,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,985 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:15,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:17:16,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:17:16,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:17:16,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:17:16,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:17:16,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:17:16,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:17:16,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:17:16,057 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:17:16,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:17:16,086 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:17:16,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:17:16,115 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:17:16,130 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4493,4506] [2021-11-03 05:17:16,131 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i[4553,4566] [2021-11-03 05:17:16,133 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:17:16,133 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:17:16,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,182 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,183 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,184 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,186 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:17:16,243 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:17:16,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:17:16,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:17:16,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:17:16,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:17:16,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:17:16,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:17:16,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:17:16,248 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:17:16,249 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:17:16,269 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:17:16,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:17:16,557 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:17:16,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16 WrapperNode [2021-11-03 05:17:16,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:17:16,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:17:16,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:17:16,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:17:16,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:17:16,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:17:16,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:17:16,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:17:16,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:17:16,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:17:16,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:17:16,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:17:16,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (1/1) ... [2021-11-03 05:17:16,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:17:16,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:17:16,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:17:16,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:17:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:17:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:17:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:17:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:17:16,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:17:16,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:17:16,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:17:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:17:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:17:17,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:17:17,934 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-03 05:17:17,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:17:17 BoogieIcfgContainer [2021-11-03 05:17:17,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:17:17,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:17:17,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:17:17,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:17:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:17:13" (1/3) ... [2021-11-03 05:17:17,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185724c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:17:17, skipping insertion in model container [2021-11-03 05:17:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:16" (2/3) ... [2021-11-03 05:17:17,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185724c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:17:17, skipping insertion in model container [2021-11-03 05:17:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:17:17" (3/3) ... [2021-11-03 05:17:17,949 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness.i [2021-11-03 05:17:17,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:17:17,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 05:17:18,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:17:18,006 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:17:18,006 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 05:17:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 05:17:18,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:18,030 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:18,031 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-03 05:17:18,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:18,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436370037] [2021-11-03 05:17:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:18,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:18,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:18,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:17:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:18,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:17:18,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:18,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:18,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:18,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436370037] [2021-11-03 05:17:18,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436370037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:18,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:18,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:17:18,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075182184] [2021-11-03 05:17:18,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:17:18,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:18,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:17:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:17:18,669 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:18,713 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-03 05:17:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:17:18,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-03 05:17:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:18,727 INFO L225 Difference]: With dead ends: 224 [2021-11-03 05:17:18,727 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 05:17:18,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:17:18,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 05:17:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-03 05:17:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-03 05:17:18,784 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-03 05:17:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:18,785 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-03 05:17:18,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-03 05:17:18,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 05:17:18,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:18,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:18,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:18,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:18,996 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:18,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:18,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-03 05:17:18,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:18,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185465011] [2021-11-03 05:17:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:18,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:18,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:19,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:19,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:17:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:19,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:19,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:19,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:19,634 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:19,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185465011] [2021-11-03 05:17:19,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185465011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:19,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:19,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:17:19,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289545423] [2021-11-03 05:17:19,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:19,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:19,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:19,648 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:19,757 INFO L93 Difference]: Finished difference Result 208 states and 294 transitions. [2021-11-03 05:17:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-03 05:17:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:19,762 INFO L225 Difference]: With dead ends: 208 [2021-11-03 05:17:19,763 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 05:17:19,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 05:17:19,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-03 05:17:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 108 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2021-11-03 05:17:19,781 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 41 [2021-11-03 05:17:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:19,782 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2021-11-03 05:17:19,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2021-11-03 05:17:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 05:17:19,784 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:19,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:19,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:20,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,001 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-03 05:17:20,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:20,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261342633] [2021-11-03 05:17:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:20,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:20,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:20,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:17:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:20,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:20,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:20,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:20,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261342633] [2021-11-03 05:17:20,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261342633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:20,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:20,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:17:20,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959772879] [2021-11-03 05:17:20,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:17:20,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:17:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:17:20,473 INFO L87 Difference]: Start difference. First operand 109 states and 150 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:20,535 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2021-11-03 05:17:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-03 05:17:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:20,539 INFO L225 Difference]: With dead ends: 210 [2021-11-03 05:17:20,542 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 05:17:20,546 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 05:17:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-11-03 05:17:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 108 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-03 05:17:20,574 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 41 [2021-11-03 05:17:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:20,575 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-03 05:17:20,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-03 05:17:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 05:17:20,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:20,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:20,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:20,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,800 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-03 05:17:20,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:20,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428442112] [2021-11-03 05:17:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:20,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:20,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:20,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:20,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:17:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:21,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:17:21,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:21,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:21,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:21,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428442112] [2021-11-03 05:17:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428442112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:21,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:21,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:17:21,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599046448] [2021-11-03 05:17:21,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:21,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:21,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:21,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:21,383 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:21,588 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-11-03 05:17:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:17:21,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-03 05:17:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:21,590 INFO L225 Difference]: With dead ends: 217 [2021-11-03 05:17:21,590 INFO L226 Difference]: Without dead ends: 135 [2021-11-03 05:17:21,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:17:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-03 05:17:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-03 05:17:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.380952380952381) internal successors, (145), 108 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2021-11-03 05:17:21,603 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 45 [2021-11-03 05:17:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:21,603 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2021-11-03 05:17:21,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2021-11-03 05:17:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 05:17:21,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:21,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:21,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:21,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:21,824 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:21,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-03 05:17:21,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:21,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379163773] [2021-11-03 05:17:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:21,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:21,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:21,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:21,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:17:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:22,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:22,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:22,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:22,455 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:22,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379163773] [2021-11-03 05:17:22,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379163773] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:22,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:22,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 05:17:22,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790526143] [2021-11-03 05:17:22,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:22,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:17:22,457 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:22,831 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2021-11-03 05:17:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:17:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-03 05:17:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:22,833 INFO L225 Difference]: With dead ends: 296 [2021-11-03 05:17:22,833 INFO L226 Difference]: Without dead ends: 213 [2021-11-03 05:17:22,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:17:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-03 05:17:22,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2021-11-03 05:17:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 111 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2021-11-03 05:17:22,844 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 49 [2021-11-03 05:17:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:22,845 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2021-11-03 05:17:22,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2021-11-03 05:17:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:17:22,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:22,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:22,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:23,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:23,063 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-03 05:17:23,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:23,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836874137] [2021-11-03 05:17:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:23,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:23,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:23,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:23,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:17:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:23,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:23,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:23,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:23,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:23,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836874137] [2021-11-03 05:17:23,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836874137] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:23,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:23,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-03 05:17:23,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840437298] [2021-11-03 05:17:23,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:17:23,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:23,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:17:23,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:17:23,767 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:24,249 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2021-11-03 05:17:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:17:24,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 05:17:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:24,253 INFO L225 Difference]: With dead ends: 335 [2021-11-03 05:17:24,253 INFO L226 Difference]: Without dead ends: 250 [2021-11-03 05:17:24,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:17:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-03 05:17:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 117. [2021-11-03 05:17:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2021-11-03 05:17:24,263 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 51 [2021-11-03 05:17:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:24,264 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2021-11-03 05:17:24,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2021-11-03 05:17:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 05:17:24,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:24,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:24,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:24,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:24,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:24,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:24,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-03 05:17:24,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:24,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141930596] [2021-11-03 05:17:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:24,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:24,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:24,481 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:24,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:17:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:24,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:17:24,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:25,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:25,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:25,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141930596] [2021-11-03 05:17:25,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141930596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:25,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:25,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 05:17:25,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485384423] [2021-11-03 05:17:25,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:17:25,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:17:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:17:25,187 INFO L87 Difference]: Start difference. First operand 117 states and 154 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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) [2021-11-03 05:17:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:25,654 INFO L93 Difference]: Finished difference Result 312 states and 405 transitions. [2021-11-03 05:17:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:17:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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) Word has length 61 [2021-11-03 05:17:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:25,656 INFO L225 Difference]: With dead ends: 312 [2021-11-03 05:17:25,656 INFO L226 Difference]: Without dead ends: 215 [2021-11-03 05:17:25,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:17:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-03 05:17:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 120. [2021-11-03 05:17:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.353448275862069) internal successors, (157), 119 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-11-03 05:17:25,665 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 61 [2021-11-03 05:17:25,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:25,665 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-11-03 05:17:25,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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) [2021-11-03 05:17:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-11-03 05:17:25,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 05:17:25,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:25,667 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:25,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:25,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:25,867 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-03 05:17:25,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:25,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840781048] [2021-11-03 05:17:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:25,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:25,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:25,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:17:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:26,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:17:26,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:26,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:17:26,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:26,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840781048] [2021-11-03 05:17:26,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840781048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:26,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:26,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:17:26,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261054367] [2021-11-03 05:17:26,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:26,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:26,572 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2021-11-03 05:17:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:26,695 INFO L93 Difference]: Finished difference Result 259 states and 326 transitions. [2021-11-03 05:17:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:17:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) Word has length 61 [2021-11-03 05:17:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:26,697 INFO L225 Difference]: With dead ends: 259 [2021-11-03 05:17:26,698 INFO L226 Difference]: Without dead ends: 166 [2021-11-03 05:17:26,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:17:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-03 05:17:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2021-11-03 05:17:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3362068965517242) internal successors, (155), 119 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-11-03 05:17:26,706 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 61 [2021-11-03 05:17:26,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:26,707 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-11-03 05:17:26,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2021-11-03 05:17:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2021-11-03 05:17:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 05:17:26,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:26,709 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:26,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:26,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:26,924 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-03 05:17:26,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:26,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514761665] [2021-11-03 05:17:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:26,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:26,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:26,926 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:26,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:17:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 05:17:27,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:27,780 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 32 treesize of output 24 [2021-11-03 05:17:27,785 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 21 treesize of output 13 [2021-11-03 05:17:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:27,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 05:17:28,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:28,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514761665] [2021-11-03 05:17:28,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514761665] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:28,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1585928574] [2021-11-03 05:17:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:28,273 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:28,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:17:28,276 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:17:28,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:17:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:17:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:17:29,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:17:29,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1585928574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:29,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:17:29,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-03 05:17:29,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719206508] [2021-11-03 05:17:29,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:17:29,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:29,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:17:29,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:17:29,169 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2021-11-03 05:17:29,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:29,366 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2021-11-03 05:17:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:17:29,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) Word has length 65 [2021-11-03 05:17:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:29,368 INFO L225 Difference]: With dead ends: 290 [2021-11-03 05:17:29,369 INFO L226 Difference]: Without dead ends: 195 [2021-11-03 05:17:29,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:17:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-03 05:17:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2021-11-03 05:17:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 119 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:29,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2021-11-03 05:17:29,378 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 65 [2021-11-03 05:17:29,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:29,378 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2021-11-03 05:17:29,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2021-11-03 05:17:29,379 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2021-11-03 05:17:29,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 05:17:29,380 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:29,380 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:29,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:29,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:29,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:29,783 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:29,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-03 05:17:29,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:29,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33383868] [2021-11-03 05:17:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:29,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:29,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:29,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:29,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:17:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:30,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 05:17:30,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:17:31,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:34,365 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:34,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-03 05:17:34,391 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 05:17:34,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-03 05:17:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:17:34,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:34,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33383868] [2021-11-03 05:17:34,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33383868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:34,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:34,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-03 05:17:34,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33273806] [2021-11-03 05:17:34,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:17:34,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:17:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:17:34,586 INFO L87 Difference]: Start difference. First operand 120 states and 153 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:35,765 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2021-11-03 05:17:35,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:17:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 05:17:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:35,768 INFO L225 Difference]: With dead ends: 164 [2021-11-03 05:17:35,768 INFO L226 Difference]: Without dead ends: 124 [2021-11-03 05:17:35,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-11-03 05:17:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-03 05:17:35,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-03 05:17:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 121 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2021-11-03 05:17:35,778 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 67 [2021-11-03 05:17:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:35,779 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2021-11-03 05:17:35,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2021-11-03 05:17:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 05:17:35,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:35,780 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:35,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:35,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:35,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-03 05:17:36,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:36,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109440464] [2021-11-03 05:17:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:36,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:36,002 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:36,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:17:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:36,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 05:17:36,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:36,777 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 05:17:36,777 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 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-03 05:17:37,671 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 41 treesize of output 29 [2021-11-03 05:17:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:17:37,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:38,237 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 96 treesize of output 90 [2021-11-03 05:17:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:17:38,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:38,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109440464] [2021-11-03 05:17:38,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109440464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:38,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:38,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-03 05:17:38,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103675987] [2021-11-03 05:17:38,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 05:17:38,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 05:17:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:17:38,423 INFO L87 Difference]: Start difference. First operand 122 states and 155 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:40,685 INFO L93 Difference]: Finished difference Result 368 states and 471 transitions. [2021-11-03 05:17:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 05:17:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 05:17:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:40,688 INFO L225 Difference]: With dead ends: 368 [2021-11-03 05:17:40,689 INFO L226 Difference]: Without dead ends: 262 [2021-11-03 05:17:40,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-11-03 05:17:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-03 05:17:40,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 130. [2021-11-03 05:17:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.2936507936507937) internal successors, (163), 129 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-11-03 05:17:40,702 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 67 [2021-11-03 05:17:40,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:40,702 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-11-03 05:17:40,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-11-03 05:17:40,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 05:17:40,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:40,704 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:40,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:40,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:40,923 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:40,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:40,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-03 05:17:40,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:40,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126992684] [2021-11-03 05:17:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:40,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:40,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:40,925 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:40,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:17:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:41,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 05:17:41,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:17:42,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:45,342 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:45,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-03 05:17:45,361 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 05:17:45,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-03 05:17:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 05:17:45,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:45,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126992684] [2021-11-03 05:17:45,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126992684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:45,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:45,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-03 05:17:45,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411409487] [2021-11-03 05:17:45,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 05:17:45,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 05:17:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:17:45,440 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:48,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:48,067 INFO L93 Difference]: Finished difference Result 461 states and 584 transitions. [2021-11-03 05:17:48,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 05:17:48,068 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 05:17:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:48,070 INFO L225 Difference]: With dead ends: 461 [2021-11-03 05:17:48,070 INFO L226 Difference]: Without dead ends: 374 [2021-11-03 05:17:48,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 05:17:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-03 05:17:48,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 239. [2021-11-03 05:17:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 238 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2021-11-03 05:17:48,098 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 67 [2021-11-03 05:17:48,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:48,098 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2021-11-03 05:17:48,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2021-11-03 05:17:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 05:17:48,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:48,100 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:48,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:48,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:48,304 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-03 05:17:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:48,305 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-03 05:17:48,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:48,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766352015] [2021-11-03 05:17:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:48,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:48,307 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:48,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:17:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:48,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 05:17:48,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:49,651 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 41 treesize of output 29 [2021-11-03 05:17:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:17:49,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:49,974 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:17:49,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 20 [2021-11-03 05:17:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:17:50,265 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:50,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766352015] [2021-11-03 05:17:50,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766352015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:17:50,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1850433545] [2021-11-03 05:17:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:50,265 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:17:50,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:17:50,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:17:50,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-03 05:17:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:51,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 05:17:51,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:51,426 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-03 05:17:51,426 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 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-03 05:17:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:17:58,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:00,064 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 177 treesize of output 169 [2021-11-03 05:18:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:18:00,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1850433545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:18:00,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064571312] [2021-11-03 05:18:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:00,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:18:00,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:00,312 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:18:00,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a4a9b7b-e4b5-4d70-8aaa-e7eec298377e/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 05:18:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:01,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-03 05:18:01,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:18:01,412 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 05:18:01,412 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 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-03 05:18:18,835 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-11-03 05:18:18,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 45 [2021-11-03 05:18:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:18:18,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:18:19,889 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 349 treesize of output 333 [2021-11-03 05:18:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 05:18:20,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064571312] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:18:20,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:18:20,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13, 13, 13, 13] total 48 [2021-11-03 05:18:20,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343622590] [2021-11-03 05:18:20,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 05:18:20,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:18:20,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 05:18:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2056, Unknown=4, NotChecked=0, Total=2256 [2021-11-03 05:18:20,109 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 48 states, 48 states have (on average 6.041666666666667) internal successors, (290), 48 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:35,333 WARN L207 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 33 [2021-11-03 05:18:40,718 WARN L207 SmtUtils]: Spent 5.03 s on a formula simplification that was a NOOP. DAG size: 38 [2021-11-03 05:19:02,001 WARN L207 SmtUtils]: Spent 9.10 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-11-03 05:19:12,744 WARN L207 SmtUtils]: Spent 8.90 s on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2021-11-03 05:20:09,742 WARN L207 SmtUtils]: Spent 13.99 s on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-11-03 05:21:06,636 WARN L207 SmtUtils]: Spent 10.51 s on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-11-03 05:21:15,035 WARN L207 SmtUtils]: Spent 8.21 s on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-11-03 05:21:37,829 WARN L207 SmtUtils]: Spent 18.49 s on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2021-11-03 05:21:48,589 WARN L207 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-11-03 05:22:05,369 WARN L207 SmtUtils]: Spent 14.05 s on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2021-11-03 05:22:33,317 WARN L207 SmtUtils]: Spent 22.09 s on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2021-11-03 05:22:43,941 WARN L207 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-11-03 05:22:55,293 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2021-11-03 05:23:08,214 WARN L207 SmtUtils]: Spent 10.47 s on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2021-11-03 05:23:18,865 WARN L207 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-11-03 05:23:29,527 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-11-03 05:23:48,303 WARN L207 SmtUtils]: Spent 16.36 s on a formula simplification that was a NOOP. DAG size: 90 [2021-11-03 05:24:01,924 WARN L207 SmtUtils]: Spent 13.08 s on a formula simplification that was a NOOP. DAG size: 91 [2021-11-03 05:24:08,426 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 54 [2021-11-03 05:24:15,293 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 55 [2021-11-03 05:24:36,949 WARN L207 SmtUtils]: Spent 18.44 s on a formula simplification that was a NOOP. DAG size: 78 [2021-11-03 05:24:44,302 WARN L207 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 49 [2021-11-03 05:25:12,146 WARN L207 SmtUtils]: Spent 27.54 s on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2021-11-03 05:25:21,282 WARN L207 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 45 [2021-11-03 05:25:32,065 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 53 [2021-11-03 05:25:40,883 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-03 05:25:57,898 WARN L207 SmtUtils]: Spent 6.36 s on a formula simplification that was a NOOP. DAG size: 38 [2021-11-03 05:26:19,836 WARN L207 SmtUtils]: Spent 15.77 s on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-11-03 05:26:41,669 WARN L207 SmtUtils]: Spent 17.90 s on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-11-03 05:26:56,608 WARN L207 SmtUtils]: Spent 14.78 s on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2021-11-03 05:27:30,435 WARN L207 SmtUtils]: Spent 18.07 s on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2021-11-03 05:27:40,888 WARN L207 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-11-03 05:27:50,006 WARN L207 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-11-03 05:28:00,603 WARN L207 SmtUtils]: Spent 8.26 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-11-03 05:28:14,692 WARN L207 SmtUtils]: Spent 13.51 s on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-11-03 05:28:29,884 WARN L207 SmtUtils]: Spent 12.73 s on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-11-03 05:28:47,837 WARN L207 SmtUtils]: Spent 17.76 s on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-11-03 05:28:56,378 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-11-03 05:29:16,714 WARN L207 SmtUtils]: Spent 10.94 s on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-11-03 05:29:31,947 WARN L207 SmtUtils]: Spent 12.72 s on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-11-03 05:29:44,398 WARN L207 SmtUtils]: Spent 12.31 s on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-11-03 05:30:02,925 WARN L207 SmtUtils]: Spent 16.03 s on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2021-11-03 05:30:25,821 WARN L207 SmtUtils]: Spent 13.89 s on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2021-11-03 05:30:46,942 WARN L207 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2021-11-03 05:31:10,645 WARN L207 SmtUtils]: Spent 8.26 s on a formula simplification. DAG size of input: 59 DAG size of output: 49