./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_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_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/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_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/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_3f9bf99f-70db-48fe-b88a-3842a46a25df/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 ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:34:14,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:34:14,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:34:14,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:34:14,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:34:14,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:34:14,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:34:14,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:34:14,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:34:14,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:34:14,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:34:14,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:34:14,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:34:14,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:34:14,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:34:14,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:34:14,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:34:14,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:34:14,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:34:14,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:34:14,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:34:14,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:34:14,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:34:14,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:34:14,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:34:14,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:34:14,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:34:14,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:34:14,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:34:14,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:34:14,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:34:14,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:34:14,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:34:14,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:34:14,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:34:14,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:34:14,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:34:14,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:34:14,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:34:14,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:34:14,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:34:14,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 04:34:15,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:34:15,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:34:15,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:34:15,011 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:34:15,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:34:15,012 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:34:15,012 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:34:15,012 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:34:15,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:34:15,019 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:34:15,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:34:15,020 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:34:15,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:34:15,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:34:15,021 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:34:15,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:34:15,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:34:15,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:34:15,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:34:15,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:34:15,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:34:15,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:34:15,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:34:15,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:34:15,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:34:15,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:34:15,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:34:15,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:34:15,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:34:15,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:34:15,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:34:15,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:34:15,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:34:15,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:34:15,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:34:15,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:34:15,029 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 [2021-11-03 04:34:15,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:34:15,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:34:15,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:34:15,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:34:15,412 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:34:15,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-03 04:34:15,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/bf026034b/b6413192bdc349659d11ab85679b7e6c/FLAG6fa456abe [2021-11-03 04:34:16,269 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:34:16,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-03 04:34:16,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/bf026034b/b6413192bdc349659d11ab85679b7e6c/FLAG6fa456abe [2021-11-03 04:34:16,807 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/bf026034b/b6413192bdc349659d11ab85679b7e6c [2021-11-03 04:34:16,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:34:16,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:34:16,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:34:16,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:34:16,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:34:16,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:16" (1/1) ... [2021-11-03 04:34:16,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef2f787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:16, skipping insertion in model container [2021-11-03 04:34:16,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:16" (1/1) ... [2021-11-03 04:34:16,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:34:16,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:34:17,200 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-03 04:34:17,206 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-03 04:34:17,227 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:34:17,232 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:34:17,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,935 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,936 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,961 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:17,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:18,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:34:18,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:34:18,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:34:18,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:34:18,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:34:18,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:34:18,262 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:34:18,263 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:34:18,264 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:34:18,265 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:34:18,390 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:34:18,450 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 04:34:18,465 INFO L168 Benchmark]: Toolchain (without parser) took 1653.38 ms. Allocated memory is still 111.1 MB. Free memory was 68.7 MB in the beginning and 81.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:18,466 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 55.0 MB in the beginning and 54.9 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:34:18,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1648.03 ms. Allocated memory is still 111.1 MB. Free memory was 68.5 MB in the beginning and 81.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:18,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 55.0 MB in the beginning and 54.9 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1648.03 ms. Allocated memory is still 111.1 MB. Free memory was 68.5 MB in the beginning and 81.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 22.6 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/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_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/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_3f9bf99f-70db-48fe-b88a-3842a46a25df/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 ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:34:20,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:34:20,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:34:20,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:34:20,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:34:20,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:34:20,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:34:20,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:34:20,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:34:20,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:34:20,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:34:20,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:34:20,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:34:20,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:34:20,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:34:20,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:34:20,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:34:20,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:34:20,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:34:20,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:34:20,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:34:20,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:34:20,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:34:20,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:34:20,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:34:20,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:34:20,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:34:20,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:34:20,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:34:20,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:34:20,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:34:20,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:34:20,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:34:20,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:34:20,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:34:20,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:34:20,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:34:20,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:34:20,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:34:20,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:34:20,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:34:20,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 04:34:20,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:34:20,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:34:20,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:34:20,954 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:34:20,954 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:34:20,955 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:34:20,955 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:34:20,955 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:34:20,955 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:34:20,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:34:20,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:34:20,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:34:20,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:34:20,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:34:20,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:34:20,959 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:34:20,959 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:34:20,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:34:20,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:34:20,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:34:20,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:34:20,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:34:20,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:34:20,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:34:20,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:34:20,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:34:20,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:34:20,962 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:34:20,962 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:34:20,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:34:20,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:34:20,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:34:20,963 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 [2021-11-03 04:34:21,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:34:21,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:34:21,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:34:21,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:34:21,361 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:34:21,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-03 04:34:21,434 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/a180f8bf3/a9271addfa6647c9a6dd4a55635b6ceb/FLAG4a18dbb02 [2021-11-03 04:34:22,236 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:34:22,237 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-03 04:34:22,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/a180f8bf3/a9271addfa6647c9a6dd4a55635b6ceb/FLAG4a18dbb02 [2021-11-03 04:34:22,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/data/a180f8bf3/a9271addfa6647c9a6dd4a55635b6ceb [2021-11-03 04:34:22,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:34:22,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:34:22,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:34:22,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:34:22,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:34:22,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:22" (1/1) ... [2021-11-03 04:34:22,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a015c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:22, skipping insertion in model container [2021-11-03 04:34:22,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:22" (1/1) ... [2021-11-03 04:34:22,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:34:22,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:34:23,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-03 04:34:23,184 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-03 04:34:23,211 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:34:23,224 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:34:24,116 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,117 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,138 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:34:24,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:34:24,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:34:24,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:34:24,477 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:34:24,478 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:34:24,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:34:24,479 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:34:24,480 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:34:24,481 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:34:24,620 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:34:24,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:34:24,672 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:34:24,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:34:24,712 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-03 04:34:24,713 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-03 04:34:24,714 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:34:24,715 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:34:24,752 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,754 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,755 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,814 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:34:24,815 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:34:24,816 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:34:24,817 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:34:24,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:34:24,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:34:24,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:34:24,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:34:24,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:34:24,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:34:24,847 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:34:24,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:34:24,872 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:34:24,886 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-03 04:34:24,886 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_3f9bf99f-70db-48fe-b88a-3842a46a25df/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-03 04:34:24,888 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 04:34:24,889 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 04:34:24,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,933 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,950 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,951 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:24,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 04:34:25,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 04:34:25,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 04:34:25,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 04:34:25,015 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 04:34:25,016 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 04:34:25,016 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 04:34:25,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 04:34:25,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 04:34:25,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 04:34:25,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 04:34:25,090 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 04:34:25,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:34:25,397 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:34:25,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25 WrapperNode [2021-11-03 04:34:25,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:34:25,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:34:25,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:34:25,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:34:25,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:34:25,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:34:25,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:34:25,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:34:25,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:34:25,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:34:25,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:34:25,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:34:25,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (1/1) ... [2021-11-03 04:34:25,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:34:25,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:34:25,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:34:25,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:34:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:34:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:34:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:34:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:34:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:34:25,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:34:25,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:34:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:34:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 04:34:26,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:34:26,773 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-03 04:34:26,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:26 BoogieIcfgContainer [2021-11-03 04:34:26,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:34:26,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:34:26,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:34:26,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:34:26,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:34:22" (1/3) ... [2021-11-03 04:34:26,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0b4a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:34:26, skipping insertion in model container [2021-11-03 04:34:26,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:25" (2/3) ... [2021-11-03 04:34:26,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0b4a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:34:26, skipping insertion in model container [2021-11-03 04:34:26,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:26" (3/3) ... [2021-11-03 04:34:26,787 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness.i [2021-11-03 04:34:26,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:34:26,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-03 04:34:26,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:34:26,861 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 04:34:26,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-03 04:34:26,882 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 04:34:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:34:26,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:26,889 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 04:34:26,890 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 04:34:26,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-03 04:34:26,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:26,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397256887] [2021-11-03 04:34:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:26,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:26,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:26,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:26,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:34:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:34:27,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:27,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:27,493 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:27,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397256887] [2021-11-03 04:34:27,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397256887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:27,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:27,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:34:27,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417836966] [2021-11-03 04:34:27,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:34:27,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:34:27,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:34:27,524 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 04:34:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:27,570 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-03 04:34:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:34:27,572 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 04:34:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:27,584 INFO L225 Difference]: With dead ends: 224 [2021-11-03 04:34:27,584 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 04:34:27,590 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 04:34:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 04:34:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-03 04:34:27,636 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 04:34:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-03 04:34:27,648 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-03 04:34:27,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:27,649 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-03 04:34:27,649 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 04:34:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-03 04:34:27,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:34:27,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:27,651 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 04:34:27,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:34:27,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:27,852 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 04:34:27,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-03 04:34:27,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:27,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692282879] [2021-11-03 04:34:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:27,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:27,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:27,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:27,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:34:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:28,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:34:28,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:28,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:28,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:28,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692282879] [2021-11-03 04:34:28,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692282879] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:28,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:28,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:34:28,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019842951] [2021-11-03 04:34:28,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:34:28,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:28,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:34:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:28,409 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 04:34:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:28,512 INFO L93 Difference]: Finished difference Result 208 states and 294 transitions. [2021-11-03 04:34:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:34:28,513 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 04:34:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:28,514 INFO L225 Difference]: With dead ends: 208 [2021-11-03 04:34:28,515 INFO L226 Difference]: Without dead ends: 109 [2021-11-03 04:34:28,516 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 04:34:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-03 04:34:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-03 04:34:28,525 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 04:34:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2021-11-03 04:34:28,526 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 41 [2021-11-03 04:34:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:28,527 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2021-11-03 04:34:28,527 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 04:34:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2021-11-03 04:34:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 04:34:28,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:28,529 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 04:34:28,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:28,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:28,746 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 04:34:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:28,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-03 04:34:28,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:28,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350153348] [2021-11-03 04:34:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:28,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:28,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:28,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:28,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:34:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:29,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:34:29,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:29,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:29,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:29,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350153348] [2021-11-03 04:34:29,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350153348] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:29,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:29,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:34:29,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138607013] [2021-11-03 04:34:29,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:34:29,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:34:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:29,242 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 04:34:29,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:29,326 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2021-11-03 04:34:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:34:29,327 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 04:34:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:29,334 INFO L225 Difference]: With dead ends: 210 [2021-11-03 04:34:29,336 INFO L226 Difference]: Without dead ends: 127 [2021-11-03 04:34:29,337 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 04:34:29,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-03 04:34:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-11-03 04:34:29,354 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 04:34:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-03 04:34:29,355 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 41 [2021-11-03 04:34:29,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:29,355 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-03 04:34:29,355 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 04:34:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-03 04:34:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-03 04:34:29,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:29,357 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 04:34:29,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:29,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:29,558 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 04:34:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-03 04:34:29,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:29,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153196285] [2021-11-03 04:34:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:29,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:29,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:29,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:29,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:34:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:29,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:34:29,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:30,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:30,182 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:30,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153196285] [2021-11-03 04:34:30,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153196285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:30,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:30,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:34:30,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937349395] [2021-11-03 04:34:30,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:34:30,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:34:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:34:30,185 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 04:34:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:30,398 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-11-03 04:34:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:34:30,399 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 04:34:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:30,400 INFO L225 Difference]: With dead ends: 217 [2021-11-03 04:34:30,401 INFO L226 Difference]: Without dead ends: 135 [2021-11-03 04:34:30,402 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 04:34:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-03 04:34:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-03 04:34:30,412 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 04:34:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2021-11-03 04:34:30,413 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 45 [2021-11-03 04:34:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:30,413 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2021-11-03 04:34:30,413 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 04:34:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2021-11-03 04:34:30,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:34:30,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:30,415 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 04:34:30,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:30,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:30,630 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 04:34:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:30,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-03 04:34:30,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:30,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246274474] [2021-11-03 04:34:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:30,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:30,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:30,633 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:30,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:34:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:30,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:34:30,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:31,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:31,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:31,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246274474] [2021-11-03 04:34:31,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246274474] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:31,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:31,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 04:34:31,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505368879] [2021-11-03 04:34:31,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:34:31,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:34:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:34:31,243 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 04:34:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:31,635 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2021-11-03 04:34:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:34:31,636 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 04:34:31,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:31,638 INFO L225 Difference]: With dead ends: 296 [2021-11-03 04:34:31,638 INFO L226 Difference]: Without dead ends: 213 [2021-11-03 04:34:31,639 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 04:34:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-03 04:34:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2021-11-03 04:34:31,650 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 04:34:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2021-11-03 04:34:31,651 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 49 [2021-11-03 04:34:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:31,651 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2021-11-03 04:34:31,651 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 04:34:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2021-11-03 04:34:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:34:31,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:31,653 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 04:34:31,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:31,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:31,869 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 04:34:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-03 04:34:31,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:31,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318579042] [2021-11-03 04:34:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:31,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:31,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:31,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:31,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:34:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:32,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:34:32,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:32,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:32,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:32,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318579042] [2021-11-03 04:34:32,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318579042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:32,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:32,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-03 04:34:32,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822495342] [2021-11-03 04:34:32,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:34:32,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:34:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:34:32,538 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 04:34:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:32,996 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2021-11-03 04:34:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:34:32,996 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 04:34:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:32,999 INFO L225 Difference]: With dead ends: 335 [2021-11-03 04:34:33,000 INFO L226 Difference]: Without dead ends: 250 [2021-11-03 04:34:33,000 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 04:34:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-03 04:34:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 117. [2021-11-03 04:34:33,018 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 04:34:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2021-11-03 04:34:33,019 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 51 [2021-11-03 04:34:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:33,020 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2021-11-03 04:34:33,020 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 04:34:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2021-11-03 04:34:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:34:33,025 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:33,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:33,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:33,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:33,245 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 04:34:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-03 04:34:33,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:33,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361397654] [2021-11-03 04:34:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:33,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:33,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:33,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:33,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:34:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:33,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:34:33,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:33,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:33,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:33,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361397654] [2021-11-03 04:34:33,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361397654] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:33,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:33,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-03 04:34:33,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118733876] [2021-11-03 04:34:33,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:34:33,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:34:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:34:33,980 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 04:34:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:34,448 INFO L93 Difference]: Finished difference Result 312 states and 405 transitions. [2021-11-03 04:34:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:34:34,449 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 04:34:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:34,450 INFO L225 Difference]: With dead ends: 312 [2021-11-03 04:34:34,450 INFO L226 Difference]: Without dead ends: 215 [2021-11-03 04:34:34,451 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 04:34:34,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-03 04:34:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 120. [2021-11-03 04:34:34,460 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 04:34:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-11-03 04:34:34,461 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 61 [2021-11-03 04:34:34,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:34,461 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-11-03 04:34:34,461 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 04:34:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-11-03 04:34:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:34:34,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:34,463 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:34,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:34,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:34,680 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 04:34:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:34,681 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-03 04:34:34,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:34,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231526738] [2021-11-03 04:34:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:34,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:34,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:34,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:34,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:34:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:35,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:34:35,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:35,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:35,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:35,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231526738] [2021-11-03 04:34:35,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231526738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:35,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:35,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:34:35,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807601693] [2021-11-03 04:34:35,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:34:35,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:35,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:34:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:34:35,412 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 04:34:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:35,520 INFO L93 Difference]: Finished difference Result 259 states and 326 transitions. [2021-11-03 04:34:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:34:35,521 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 04:34:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:35,522 INFO L225 Difference]: With dead ends: 259 [2021-11-03 04:34:35,522 INFO L226 Difference]: Without dead ends: 166 [2021-11-03 04:34:35,523 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 04:34:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-03 04:34:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2021-11-03 04:34:35,533 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 04:34:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-11-03 04:34:35,534 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 61 [2021-11-03 04:34:35,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:35,534 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-11-03 04:34:35,535 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 04:34:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2021-11-03 04:34:35,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:34:35,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:35,538 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:35,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:35,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:35,757 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 04:34:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-03 04:34:35,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:35,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698240289] [2021-11-03 04:34:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:35,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:35,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:35,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:34:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:36,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 04:34:36,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:36,657 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 04:34:36,663 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 04:34:36,771 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 04:34:36,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:37,149 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 04:34:37,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:37,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698240289] [2021-11-03 04:34:37,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698240289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:34:37,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [493117440] [2021-11-03 04:34:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:37,149 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:34:37,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:34:37,151 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:34:37,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 04:34:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:37,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:34:37,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:37,844 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 04:34:37,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:38,016 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 04:34:38,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [493117440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:38,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:34:38,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-03 04:34:38,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343892650] [2021-11-03 04:34:38,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:34:38,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:34:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:34:38,018 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 04:34:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:38,214 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2021-11-03 04:34:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:34:38,215 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 04:34:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:38,216 INFO L225 Difference]: With dead ends: 290 [2021-11-03 04:34:38,216 INFO L226 Difference]: Without dead ends: 195 [2021-11-03 04:34:38,217 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 04:34:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-03 04:34:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2021-11-03 04:34:38,224 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 04:34:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2021-11-03 04:34:38,225 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 65 [2021-11-03 04:34:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:38,226 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2021-11-03 04:34:38,226 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 04:34:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2021-11-03 04:34:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:34:38,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:38,227 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 04:34:38,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:38,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:38,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:38,631 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 04:34:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:38,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-03 04:34:38,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:38,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733517206] [2021-11-03 04:34:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:38,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:38,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:38,633 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:38,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:34:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:39,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 04:34:39,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:40,228 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 04:34:40,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:43,147 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:34:43,148 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 04:34:43,185 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 04:34:43,185 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 04:34:43,326 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 04:34:43,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:43,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733517206] [2021-11-03 04:34:43,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733517206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:43,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:43,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-03 04:34:43,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374742077] [2021-11-03 04:34:43,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:34:43,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:34:43,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:34:43,329 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 04:34:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:44,573 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2021-11-03 04:34:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:34:44,574 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 04:34:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:44,575 INFO L225 Difference]: With dead ends: 164 [2021-11-03 04:34:44,575 INFO L226 Difference]: Without dead ends: 124 [2021-11-03 04:34:44,576 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 04:34:44,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-03 04:34:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-03 04:34:44,585 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 04:34:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2021-11-03 04:34:44,586 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 67 [2021-11-03 04:34:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:44,587 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2021-11-03 04:34:44,587 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 04:34:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2021-11-03 04:34:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:34:44,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:44,588 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 04:34:44,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:44,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:44,807 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 04:34:44,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:44,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-03 04:34:44,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:44,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315123260] [2021-11-03 04:34:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:44,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:44,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:44,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:44,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:34:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:45,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 04:34:45,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:45,712 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 04:34:45,712 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 04:34:46,664 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 04:34:46,727 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 04:34:46,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:47,238 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 210 treesize of output 198 [2021-11-03 04:34:47,466 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 04:34:47,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:47,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315123260] [2021-11-03 04:34:47,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315123260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:47,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:47,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-03 04:34:47,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283541758] [2021-11-03 04:34:47,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:34:47,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:34:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:34:47,468 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 04:34:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:49,911 INFO L93 Difference]: Finished difference Result 368 states and 471 transitions. [2021-11-03 04:34:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 04:34:49,912 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 04:34:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:49,919 INFO L225 Difference]: With dead ends: 368 [2021-11-03 04:34:49,919 INFO L226 Difference]: Without dead ends: 262 [2021-11-03 04:34:49,920 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 04:34:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-03 04:34:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 130. [2021-11-03 04:34:49,932 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 04:34:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-11-03 04:34:49,933 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 67 [2021-11-03 04:34:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-11-03 04:34:49,934 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 04:34:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-11-03 04:34:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:34:49,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:49,935 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 04:34:49,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:50,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:50,150 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 04:34:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-03 04:34:50,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:50,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943461385] [2021-11-03 04:34:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:50,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:50,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:50,152 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:50,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:34:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:50,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:34:50,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:51,836 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 04:34:51,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:54,685 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 04:34:54,685 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 35 [2021-11-03 04:34:54,712 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-11-03 04:34:54,713 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 31 treesize of output 19 [2021-11-03 04:34:54,778 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 04:34:54,778 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:54,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943461385] [2021-11-03 04:34:54,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943461385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:54,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:54,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-03 04:34:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217702639] [2021-11-03 04:34:54,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 04:34:54,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 04:34:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:34:54,781 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 04:34:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:57,427 INFO L93 Difference]: Finished difference Result 461 states and 584 transitions. [2021-11-03 04:34:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 04:34:57,428 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 04:34:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:57,431 INFO L225 Difference]: With dead ends: 461 [2021-11-03 04:34:57,433 INFO L226 Difference]: Without dead ends: 374 [2021-11-03 04:34:57,434 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 04:34:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-03 04:34:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 239. [2021-11-03 04:34:57,471 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 04:34:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2021-11-03 04:34:57,472 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 67 [2021-11-03 04:34:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:57,473 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2021-11-03 04:34:57,473 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 04:34:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2021-11-03 04:34:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:34:57,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:57,474 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 04:34:57,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:57,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:57,694 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 04:34:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-03 04:34:57,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:57,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78518048] [2021-11-03 04:34:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:57,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:57,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:57,697 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:57,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:34:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-03 04:34:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:59,103 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 04:34:59,163 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 04:34:59,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:59,423 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:34:59,424 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 04:34:59,675 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 04:34:59,675 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:59,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78518048] [2021-11-03 04:34:59,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78518048] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:34:59,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1119073804] [2021-11-03 04:34:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:59,676 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:34:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:34:59,680 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:34:59,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-03 04:35:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:00,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 04:35:00,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:35:00,838 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-03 04:35:00,838 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 04:35:05,030 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 04:35:05,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:35:06,376 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 381 treesize of output 365 [2021-11-03 04:35:06,738 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 04:35:06,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1119073804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:35:06,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505943465] [2021-11-03 04:35:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:35:06,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:35:06,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:35:06,740 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:35:06,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9bf99f-70db-48fe-b88a-3842a46a25df/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-03 04:35:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:35:07,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-03 04:35:07,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:35:07,896 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 04:35:07,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 04:35:25,207 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-11-03 04:35:25,207 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 04:35:25,241 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 04:35:25,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:35:26,186 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 04:35:26,403 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 04:35:26,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505943465] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:35:26,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:35:26,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13, 13, 13, 13] total 48 [2021-11-03 04:35:26,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067456981] [2021-11-03 04:35:26,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-03 04:35:26,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:35:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-03 04:35:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2056, Unknown=4, NotChecked=0, Total=2256 [2021-11-03 04:35:26,407 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 04:35:59,953 WARN L207 SmtUtils]: Spent 6.85 s on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2021-11-03 04:36:18,899 WARN L207 SmtUtils]: Spent 13.97 s on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2021-11-03 04:37:02,895 WARN L207 SmtUtils]: Spent 11.28 s on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-11-03 04:37:26,662 WARN L207 SmtUtils]: Spent 19.52 s on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2021-11-03 04:37:35,082 WARN L207 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-11-03 04:37:54,165 WARN L207 SmtUtils]: Spent 14.65 s on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2021-11-03 04:38:02,669 WARN L207 SmtUtils]: Spent 8.21 s on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-11-03 04:38:11,188 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-11-03 04:38:36,422 WARN L207 SmtUtils]: Spent 17.94 s on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-11-03 04:38:59,699 WARN L207 SmtUtils]: Spent 16.01 s on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-11-03 04:39:12,388 WARN L207 SmtUtils]: Spent 8.21 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-11-03 04:39:25,452 WARN L207 SmtUtils]: Spent 8.28 s on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2021-11-03 04:39:53,533 WARN L207 SmtUtils]: Spent 24.59 s on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-11-03 04:40:06,184 WARN L207 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-11-03 04:40:16,975 WARN L207 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-11-03 04:40:31,597 WARN L207 SmtUtils]: Spent 10.27 s on a formula simplification that was a NOOP. DAG size: 91 [2021-11-03 04:40:39,800 WARN L207 SmtUtils]: Spent 7.71 s on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-11-03 04:40:48,708 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 54 [2021-11-03 04:41:07,860 WARN L207 SmtUtils]: Spent 8.47 s on a formula simplification that was a NOOP. DAG size: 82 [2021-11-03 04:41:21,258 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 55 [2021-11-03 04:41:58,909 WARN L207 SmtUtils]: Spent 19.89 s on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-11-03 04:42:17,629 WARN L207 SmtUtils]: Spent 10.43 s on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-11-03 04:42:29,525 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 45 [2021-11-03 04:42:42,021 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 53 [2021-11-03 04:42:48,869 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-03 04:43:57,911 WARN L207 SmtUtils]: Spent 10.01 s on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2021-11-03 04:44:52,726 WARN L207 SmtUtils]: Spent 9.49 s on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-11-03 04:45:03,461 WARN L207 SmtUtils]: Spent 10.35 s on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-11-03 04:45:57,277 WARN L207 SmtUtils]: Spent 15.69 s on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-11-03 04:46:09,744 WARN L207 SmtUtils]: Spent 8.15 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-11-03 04:46:18,408 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-11-03 04:46:38,671 WARN L207 SmtUtils]: Spent 8.20 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-11-03 04:46:51,331 WARN L207 SmtUtils]: Spent 8.29 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-11-03 04:47:09,784 WARN L207 SmtUtils]: Spent 9.73 s on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-11-03 04:47:56,147 WARN L207 SmtUtils]: Spent 6.70 s on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-11-03 04:48:14,663 WARN L207 SmtUtils]: Spent 13.94 s on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2021-11-03 04:48:23,166 WARN L207 SmtUtils]: Spent 8.27 s on a formula simplification. DAG size of input: 61 DAG size of output: 51