./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_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_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/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_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/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_041111a3-80aa-470b-a91b-51f70bb1574c/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 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:12:26,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:12:26,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:12:26,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:12:26,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:12:26,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:12:26,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:12:26,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:12:26,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:12:26,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:12:26,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:12:26,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:12:26,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:12:26,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:12:26,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:12:26,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:12:26,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:12:26,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:12:26,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:12:26,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:12:26,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:12:26,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:12:26,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:12:26,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:12:26,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:12:26,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:12:26,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:12:26,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:12:26,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:12:26,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:12:26,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:12:26,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:12:26,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:12:26,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:12:26,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:12:26,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:12:26,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:12:26,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:12:26,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:12:26,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:12:26,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:12:26,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 05:12:26,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:12:26,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:12:26,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:12:26,281 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:12:26,282 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:12:26,282 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:12:26,282 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:12:26,282 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:12:26,282 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:12:26,283 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:12:26,283 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:12:26,283 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:12:26,283 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:12:26,283 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:12:26,284 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:12:26,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:12:26,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:12:26,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:12:26,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:12:26,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:12:26,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:12:26,286 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:12:26,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:12:26,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:12:26,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:12:26,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:12:26,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:12:26,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:12:26,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:12:26,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:12:26,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:12:26,288 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:12:26,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:12:26,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:12:26,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:12:26,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:12:26,289 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_041111a3-80aa-470b-a91b-51f70bb1574c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e [2021-11-03 05:12:26,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:12:26,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:12:26,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:12:26,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:12:26,562 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:12:26,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-03 05:12:26,649 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/ddf939ace/cf91b9b37b4a419e935036ba9a0293b9/FLAGc7f855b08 [2021-11-03 05:12:27,425 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:12:27,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-03 05:12:27,462 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/ddf939ace/cf91b9b37b4a419e935036ba9a0293b9/FLAGc7f855b08 [2021-11-03 05:12:27,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/ddf939ace/cf91b9b37b4a419e935036ba9a0293b9 [2021-11-03 05:12:27,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:12:27,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:12:27,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:12:27,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:12:27,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:12:27,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:12:27" (1/1) ... [2021-11-03 05:12:27,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff35fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:27, skipping insertion in model container [2021-11-03 05:12:27,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:12:27" (1/1) ... [2021-11-03 05:12:27,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:12:27,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:12:27,898 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-03 05:12:27,904 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-03 05:12:27,925 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:12:27,930 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:12:28,771 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,772 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,772 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,773 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,774 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,804 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,811 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,812 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:28,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:29,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:12:29,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:12:29,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:12:29,146 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:12:29,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:12:29,148 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:12:29,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:12:29,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:12:29,150 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:12:29,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:12:29,320 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:12:29,341 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1369) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2938) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2798) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2101) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 05:12:29,347 INFO L168 Benchmark]: Toolchain (without parser) took 1849.16 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 54.6 MB in the beginning and 77.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:12:29,348 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:12:29,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1842.34 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 54.4 MB in the beginning and 77.1 MB in the end (delta: -22.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:12:29,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 96.5 MB. Free memory was 66.3 MB in the beginning and 66.3 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1842.34 ms. Allocated memory was 96.5 MB in the beginning and 132.1 MB in the end (delta: 35.7 MB). Free memory was 54.4 MB in the beginning and 77.1 MB in the end (delta: -22.6 MB). Peak memory consumption was 14.7 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_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/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_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/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_041111a3-80aa-470b-a91b-51f70bb1574c/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 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:12:31,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:12:31,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:12:31,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:12:31,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:12:31,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:12:31,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:12:31,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:12:31,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:12:31,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:12:31,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:12:31,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:12:31,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:12:31,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:12:31,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:12:31,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:12:31,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:12:31,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:12:31,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:12:31,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:12:31,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:12:31,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:12:31,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:12:31,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:12:31,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:12:31,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:12:31,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:12:31,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:12:31,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:12:31,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:12:31,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:12:31,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:12:31,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:12:31,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:12:31,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:12:31,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:12:31,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:12:31,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:12:31,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:12:31,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:12:31,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:12:31,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 05:12:31,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:12:31,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:12:31,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:12:31,798 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:12:31,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:12:31,799 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:12:31,799 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:12:31,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:12:31,799 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:12:31,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:12:31,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:12:31,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:12:31,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:12:31,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:12:31,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:12:31,803 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:12:31,803 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:12:31,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:12:31,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:12:31,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:12:31,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:12:31,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:12:31,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:12:31,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:12:31,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:12:31,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:12:31,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:12:31,806 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:12:31,806 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:12:31,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:12:31,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:12:31,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:12:31,807 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_041111a3-80aa-470b-a91b-51f70bb1574c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e [2021-11-03 05:12:32,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:12:32,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:12:32,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:12:32,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:12:32,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:12:32,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-03 05:12:32,328 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/bb2731e14/34df85eacdf842b5bb3b8b5a72b6f199/FLAGe4be9ffdb [2021-11-03 05:12:33,189 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:12:33,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-03 05:12:33,236 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/bb2731e14/34df85eacdf842b5bb3b8b5a72b6f199/FLAGe4be9ffdb [2021-11-03 05:12:33,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/data/bb2731e14/34df85eacdf842b5bb3b8b5a72b6f199 [2021-11-03 05:12:33,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:12:33,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:12:33,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:12:33,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:12:33,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:12:33,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:12:33" (1/1) ... [2021-11-03 05:12:33,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366107ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:33, skipping insertion in model container [2021-11-03 05:12:33,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:12:33" (1/1) ... [2021-11-03 05:12:33,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:12:33,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:12:33,749 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-03 05:12:33,757 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-03 05:12:33,779 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:12:33,792 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:12:34,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,709 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:34,710 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:12:35,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:12:35,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:12:35,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:12:35,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:12:35,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:12:35,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:12:35,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:12:35,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:12:35,069 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:12:35,272 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:12:35,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:12:35,332 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:12:35,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:12:35,373 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-03 05:12:35,373 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-03 05:12:35,377 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:12:35,378 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:12:35,462 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,463 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,464 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,490 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,492 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,568 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:12:35,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:12:35,573 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:12:35,574 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:12:35,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:12:35,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:12:35,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:12:35,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:12:35,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:12:35,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:12:35,603 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:12:35,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:12:35,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:12:35,642 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-03 05:12:35,642 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_041111a3-80aa-470b-a91b-51f70bb1574c/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-03 05:12:35,644 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 05:12:35,645 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 05:12:35,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,702 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,703 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,709 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,710 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,711 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,711 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,712 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,713 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,713 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 05:12:35,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 05:12:35,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 05:12:35,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 05:12:35,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 05:12:35,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 05:12:35,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 05:12:35,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 05:12:35,763 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 05:12:35,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 05:12:35,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 05:12:35,801 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 05:12:35,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:12:36,148 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:12:36,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36 WrapperNode [2021-11-03 05:12:36,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:12:36,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:12:36,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:12:36,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:12:36,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:12:36,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:12:36,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:12:36,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:12:36,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:12:36,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:12:36,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:12:36,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:12:36,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (1/1) ... [2021-11-03 05:12:36,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:12:36,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:12:36,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:12:36,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:12:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:12:36,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:12:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:12:36,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:12:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:12:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:12:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:12:37,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:12:37,138 INFO L299 CfgBuilder]: Removed 32 assume(true) statements. [2021-11-03 05:12:37,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:12:37 BoogieIcfgContainer [2021-11-03 05:12:37,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:12:37,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:12:37,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:12:37,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:12:37,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:12:33" (1/3) ... [2021-11-03 05:12:37,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6e5282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:12:37, skipping insertion in model container [2021-11-03 05:12:37,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:12:36" (2/3) ... [2021-11-03 05:12:37,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6e5282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:12:37, skipping insertion in model container [2021-11-03 05:12:37,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:12:37" (3/3) ... [2021-11-03 05:12:37,154 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness.i [2021-11-03 05:12:37,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:12:37,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 05:12:37,214 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:12:37,227 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:12:37,228 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 05:12:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 57 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:12:37,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:37,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:12:37,262 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:12:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash -126002633, now seen corresponding path program 1 times [2021-11-03 05:12:37,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:37,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887375540] [2021-11-03 05:12:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:37,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:37,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:37,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:37,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:12:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:37,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:12:37,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:37,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:37,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:12:37,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887375540] [2021-11-03 05:12:37,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887375540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:37,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:12:37,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:12:37,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131161873] [2021-11-03 05:12:37,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:12:37,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:37,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:12:37,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:12:37,721 INFO L87 Difference]: Start difference. First operand has 58 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 57 states have internal predecessors, (74), 0 states have call successors, (0), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:12:37,750 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2021-11-03 05:12:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:12:37,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 05:12:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:12:37,761 INFO L225 Difference]: With dead ends: 108 [2021-11-03 05:12:37,761 INFO L226 Difference]: Without dead ends: 53 [2021-11-03 05:12:37,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:12:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-03 05:12:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-03 05:12:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-11-03 05:12:37,803 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 16 [2021-11-03 05:12:37,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:12:37,805 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-11-03 05:12:37,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-11-03 05:12:37,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:12:37,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:12:37,807 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:12:37,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:12:38,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:12:38,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:12:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:12:38,026 INFO L85 PathProgramCache]: Analyzing trace with hash 554055737, now seen corresponding path program 1 times [2021-11-03 05:12:38,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:12:38,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007493266] [2021-11-03 05:12:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:12:38,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:12:38,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:12:38,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:12:38,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:12:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:12:38,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-03 05:12:38,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:12:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:39,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:12:42,028 INFO L354 Elim1Store]: treesize reduction 25, result has 75.7 percent of original size [2021-11-03 05:12:42,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 121 [2021-11-03 05:12:42,466 INFO L354 Elim1Store]: treesize reduction 15, result has 77.6 percent of original size [2021-11-03 05:12:42,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 132 [2021-11-03 05:12:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:12:44,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:12:44,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007493266] [2021-11-03 05:12:44,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007493266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:12:44,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:12:44,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-03 05:12:44,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421695134] [2021-11-03 05:12:44,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:12:44,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:12:44,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:12:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:12:44,084 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:12:58,904 WARN L207 SmtUtils]: Spent 10.45 s on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2021-11-03 05:13:25,262 WARN L207 SmtUtils]: Spent 21.94 s on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2021-11-03 05:14:00,315 WARN L207 SmtUtils]: Spent 24.32 s on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2021-11-03 05:14:18,844 WARN L207 SmtUtils]: Spent 16.25 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2021-11-03 05:14:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:14:21,521 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2021-11-03 05:14:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 05:14:21,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 05:14:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:14:21,528 INFO L225 Difference]: With dead ends: 139 [2021-11-03 05:14:21,528 INFO L226 Difference]: Without dead ends: 137 [2021-11-03 05:14:21,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 91.5s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-11-03 05:14:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-03 05:14:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 56. [2021-11-03 05:14:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.3) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2021-11-03 05:14:21,543 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 16 [2021-11-03 05:14:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:14:21,544 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2021-11-03 05:14:21,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2021-11-03 05:14:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:14:21,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:14:21,545 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:14:21,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:14:21,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:14:21,746 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:14:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:14:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash 555902779, now seen corresponding path program 1 times [2021-11-03 05:14:21,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:14:21,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092003405] [2021-11-03 05:14:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:14:21,747 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:14:21,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:14:21,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:14:21,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:14:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:14:21,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-03 05:14:21,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:14:22,337 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 35 treesize of output 27 [2021-11-03 05:14:22,340 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 27 treesize of output 19 [2021-11-03 05:14:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:14:22,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:14:22,650 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-03 05:14:22,651 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 32 treesize of output 31 [2021-11-03 05:14:22,661 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-03 05:14:22,662 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 27 treesize of output 19 [2021-11-03 05:14:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:14:22,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:14:22,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092003405] [2021-11-03 05:14:22,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092003405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:14:22,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:14:22,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-11-03 05:14:22,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716263733] [2021-11-03 05:14:22,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:14:22,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:14:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:14:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:14:22,679 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:14:23,262 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2021-11-03 05:14:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:14:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 05:14:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:14:23,264 INFO L225 Difference]: With dead ends: 112 [2021-11-03 05:14:23,264 INFO L226 Difference]: Without dead ends: 59 [2021-11-03 05:14:23,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:14:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-03 05:14:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-03 05:14:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.25) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-11-03 05:14:23,272 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 16 [2021-11-03 05:14:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:14:23,273 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-11-03 05:14:23,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-11-03 05:14:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 05:14:23,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:14:23,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:14:23,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:14:23,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:14:23,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:14:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:14:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1964057155, now seen corresponding path program 1 times [2021-11-03 05:14:23,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:14:23,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144147994] [2021-11-03 05:14:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:14:23,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:14:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:14:23,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:14:23,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:14:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:14:23,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:14:23,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:14:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:14:23,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:14:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:14:23,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:14:23,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144147994] [2021-11-03 05:14:23,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144147994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:14:23,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:14:23,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:14:23,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619777299] [2021-11-03 05:14:23,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:14:23,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:14:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:14:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:14:23,782 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:14:23,831 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2021-11-03 05:14:23,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:14:23,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 05:14:23,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:14:23,835 INFO L225 Difference]: With dead ends: 97 [2021-11-03 05:14:23,835 INFO L226 Difference]: Without dead ends: 51 [2021-11-03 05:14:23,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:14:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-03 05:14:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-03 05:14:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-11-03 05:14:23,841 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 16 [2021-11-03 05:14:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:14:23,842 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-11-03 05:14:23,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:14:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-11-03 05:14:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 05:14:23,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:14:23,843 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] [2021-11-03 05:14:23,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-03 05:14:24,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:14:24,061 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:14:24,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:14:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash -536904639, now seen corresponding path program 1 times [2021-11-03 05:14:24,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:14:24,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033150558] [2021-11-03 05:14:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:14:24,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:14:24,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:14:24,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:14:24,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:14:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:14:24,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-03 05:14:24,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:14:25,625 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-03 05:14:25,625 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 96 [2021-11-03 05:14:25,680 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-03 05:14:25,680 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2021-11-03 05:14:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:14:25,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:14:44,224 WARN L207 SmtUtils]: Spent 8.88 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-03 05:14:44,226 INFO L354 Elim1Store]: treesize reduction 25, result has 84.3 percent of original size [2021-11-03 05:14:44,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 203 [2021-11-03 05:14:45,022 INFO L354 Elim1Store]: treesize reduction 23, result has 79.3 percent of original size [2021-11-03 05:14:45,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 213 treesize of output 220 [2021-11-03 05:14:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:14:49,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:14:49,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033150558] [2021-11-03 05:14:49,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033150558] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:14:49,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:14:49,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-03 05:14:49,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698342805] [2021-11-03 05:14:49,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 05:14:49,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:14:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 05:14:49,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=327, Unknown=4, NotChecked=0, Total=380 [2021-11-03 05:14:49,583 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:15:03,333 WARN L207 SmtUtils]: Spent 12.34 s on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-11-03 05:15:18,200 WARN L207 SmtUtils]: Spent 12.54 s on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-11-03 05:15:44,913 WARN L207 SmtUtils]: Spent 26.54 s on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2021-11-03 05:16:09,619 WARN L207 SmtUtils]: Spent 24.55 s on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-11-03 05:20:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:03,896 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2021-11-03 05:20:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 05:20:03,993 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 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 23 [2021-11-03 05:20:03,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:03,994 INFO L225 Difference]: With dead ends: 71 [2021-11-03 05:20:03,994 INFO L226 Difference]: Without dead ends: 69 [2021-11-03 05:20:03,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 153.0s TimeCoverageRelationStatistics Valid=343, Invalid=1104, Unknown=35, NotChecked=0, Total=1482 [2021-11-03 05:20:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-03 05:20:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2021-11-03 05:20:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-11-03 05:20:04,001 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 23 [2021-11-03 05:20:04,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:04,001 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-11-03 05:20:04,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-11-03 05:20:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 05:20:04,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:04,002 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] [2021-11-03 05:20:04,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:04,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:04,203 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:20:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash -535057597, now seen corresponding path program 1 times [2021-11-03 05:20:04,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:04,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290434869] [2021-11-03 05:20:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:04,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:04,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:04,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:20:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:04,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-03 05:20:04,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:04,851 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 36 treesize of output 28 [2021-11-03 05:20:05,423 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-03 05:20:05,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 32 [2021-11-03 05:20:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:05,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:06,476 INFO L354 Elim1Store]: treesize reduction 21, result has 79.6 percent of original size [2021-11-03 05:20:06,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 98 [2021-11-03 05:20:06,507 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:20:06,507 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 82 treesize of output 73 [2021-11-03 05:20:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:06,928 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:06,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290434869] [2021-11-03 05:20:06,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290434869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:06,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:06,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 17 [2021-11-03 05:20:06,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597183720] [2021-11-03 05:20:06,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 05:20:06,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 05:20:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-03 05:20:06,929 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:12,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:12,120 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2021-11-03 05:20:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:20:12,122 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 23 [2021-11-03 05:20:12,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:12,123 INFO L225 Difference]: With dead ends: 89 [2021-11-03 05:20:12,123 INFO L226 Difference]: Without dead ends: 57 [2021-11-03 05:20:12,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2021-11-03 05:20:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-03 05:20:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-11-03 05:20:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.196078431372549) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-11-03 05:20:12,133 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 23 [2021-11-03 05:20:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:12,134 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-11-03 05:20:12,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-11-03 05:20:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-03 05:20:12,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:12,143 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] [2021-11-03 05:20:12,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:12,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:12,360 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:20:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1239949765, now seen corresponding path program 1 times [2021-11-03 05:20:12,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:12,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831953554] [2021-11-03 05:20:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:12,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:12,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:12,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:12,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:20:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:12,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:20:12,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:12,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 05:20:12,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 05:20:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:13,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:13,305 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-03 05:20:13,306 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 32 treesize of output 31 [2021-11-03 05:20:13,313 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-03 05:20:13,314 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 27 treesize of output 19 [2021-11-03 05:20:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:13,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:13,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831953554] [2021-11-03 05:20:13,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831953554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:13,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:13,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-03 05:20:13,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167917840] [2021-11-03 05:20:13,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:20:13,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:20:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:20:13,327 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:14,104 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-11-03 05:20:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:20:14,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 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 23 [2021-11-03 05:20:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:14,106 INFO L225 Difference]: With dead ends: 86 [2021-11-03 05:20:14,106 INFO L226 Difference]: Without dead ends: 49 [2021-11-03 05:20:14,107 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-03 05:20:14,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-03 05:20:14,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-03 05:20:14,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-11-03 05:20:14,113 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 23 [2021-11-03 05:20:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:14,113 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-11-03 05:20:14,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-11-03 05:20:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-03 05:20:14,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:14,114 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] [2021-11-03 05:20:14,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:20:14,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:14,315 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:20:14,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:14,315 INFO L85 PathProgramCache]: Analyzing trace with hash -569156093, now seen corresponding path program 1 times [2021-11-03 05:20:14,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:14,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486281971] [2021-11-03 05:20:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:14,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:14,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:14,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:14,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:20:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:14,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:20:14,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:14,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:15,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:15,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486281971] [2021-11-03 05:20:15,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486281971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:15,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:15,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:20:15,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308194859] [2021-11-03 05:20:15,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:20:15,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:15,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:20:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:20:15,049 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:15,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:15,236 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-11-03 05:20:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:20:15,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-03 05:20:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:15,238 INFO L225 Difference]: With dead ends: 49 [2021-11-03 05:20:15,238 INFO L226 Difference]: Without dead ends: 47 [2021-11-03 05:20:15,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:20:15,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-03 05:20:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-03 05:20:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-11-03 05:20:15,245 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 25 [2021-11-03 05:20:15,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:15,246 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-11-03 05:20:15,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:15,246 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-11-03 05:20:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 05:20:15,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:15,247 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] [2021-11-03 05:20:15,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 05:20:15,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:20:15,457 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:20:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1661416883, now seen corresponding path program 1 times [2021-11-03 05:20:15,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:20:15,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225798139] [2021-11-03 05:20:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:15,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:20:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:20:15,460 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:20:15,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:20:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:15,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-03 05:20:15,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:20:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:16,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:20:22,166 INFO L354 Elim1Store]: treesize reduction 21, result has 79.6 percent of original size [2021-11-03 05:20:22,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 125 [2021-11-03 05:20:22,622 INFO L354 Elim1Store]: treesize reduction 8, result has 88.1 percent of original size [2021-11-03 05:20:22,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 143 [2021-11-03 05:20:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:24,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:20:24,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225798139] [2021-11-03 05:20:24,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225798139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:24,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:24,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-03 05:20:24,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345769693] [2021-11-03 05:20:24,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 05:20:24,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:20:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 05:20:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:20:24,295 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:08,229 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-11-03 05:21:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 05:21:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 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 33 [2021-11-03 05:21:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:08,231 INFO L225 Difference]: With dead ends: 65 [2021-11-03 05:21:08,231 INFO L226 Difference]: Without dead ends: 63 [2021-11-03 05:21:08,232 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2021-11-03 05:21:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-03 05:21:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2021-11-03 05:21:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-11-03 05:21:08,239 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 33 [2021-11-03 05:21:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:08,239 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-11-03 05:21:08,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-11-03 05:21:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 05:21:08,240 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:08,241 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] [2021-11-03 05:21:08,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:21:08,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:21:08,446 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:21:08,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1659569841, now seen corresponding path program 1 times [2021-11-03 05:21:08,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:21:08,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001801717] [2021-11-03 05:21:08,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:08,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:21:08,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:21:08,448 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:21:08,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:21:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:08,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 05:21:08,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:21:09,239 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 35 treesize of output 27 [2021-11-03 05:21:09,242 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 27 treesize of output 19 [2021-11-03 05:21:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:09,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:21:09,742 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-03 05:21:09,742 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 32 treesize of output 31 [2021-11-03 05:21:09,752 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-03 05:21:09,753 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 27 treesize of output 19 [2021-11-03 05:21:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:09,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:21:09,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001801717] [2021-11-03 05:21:09,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001801717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:09,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:09,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-11-03 05:21:09,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433087784] [2021-11-03 05:21:09,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 05:21:09,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:21:09,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 05:21:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:21:09,775 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:10,323 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-11-03 05:21:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:21:10,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 33 [2021-11-03 05:21:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:10,326 INFO L225 Difference]: With dead ends: 71 [2021-11-03 05:21:10,326 INFO L226 Difference]: Without dead ends: 53 [2021-11-03 05:21:10,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-03 05:21:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-03 05:21:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-11-03 05:21:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-11-03 05:21:10,336 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 33 [2021-11-03 05:21:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:10,336 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-11-03 05:21:10,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-11-03 05:21:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 05:21:10,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:10,354 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] [2021-11-03 05:21:10,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:21:10,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:21:10,570 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:21:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:10,571 INFO L85 PathProgramCache]: Analyzing trace with hash 115437521, now seen corresponding path program 1 times [2021-11-03 05:21:10,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:21:10,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046270892] [2021-11-03 05:21:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:10,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:21:10,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:21:10,573 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:21:10,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:21:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:10,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:21:10,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:21:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:11,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:21:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:11,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:21:11,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046270892] [2021-11-03 05:21:11,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046270892] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:11,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:11,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:21:11,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441832982] [2021-11-03 05:21:11,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:21:11,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:21:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:21:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:21:11,261 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:11,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:11,319 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-11-03 05:21:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:21:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-03 05:21:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:11,320 INFO L225 Difference]: With dead ends: 68 [2021-11-03 05:21:11,320 INFO L226 Difference]: Without dead ends: 45 [2021-11-03 05:21:11,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:21:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-03 05:21:11,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-03 05:21:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-11-03 05:21:11,326 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 33 [2021-11-03 05:21:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:11,327 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-11-03 05:21:11,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-11-03 05:21:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 05:21:11,328 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:11,328 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] [2021-11-03 05:21:11,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:21:11,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:21:11,546 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:21:11,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash -9950966, now seen corresponding path program 1 times [2021-11-03 05:21:11,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:21:11,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287130434] [2021-11-03 05:21:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:11,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:21:11,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:21:11,548 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:21:11,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_041111a3-80aa-470b-a91b-51f70bb1574c/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:21:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:11,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-03 05:21:11,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:21:14,573 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-03 05:21:14,573 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 96 [2021-11-03 05:21:14,650 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-03 05:21:14,650 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2021-11-03 05:21:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:15,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:21:42,377 WARN L207 SmtUtils]: Spent 8.82 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-03 05:21:42,378 INFO L354 Elim1Store]: treesize reduction 25, result has 84.3 percent of original size [2021-11-03 05:21:42,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 203 [2021-11-03 05:21:43,473 INFO L354 Elim1Store]: treesize reduction 23, result has 79.3 percent of original size [2021-11-03 05:21:43,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 213 treesize of output 220 [2021-11-03 05:21:57,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:57,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:21:57,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287130434] [2021-11-03 05:21:57,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287130434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:57,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:57,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 24 [2021-11-03 05:21:57,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370559529] [2021-11-03 05:21:57,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 05:21:57,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:21:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 05:21:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=487, Unknown=8, NotChecked=0, Total=552 [2021-11-03 05:21:57,350 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:11,987 WARN L207 SmtUtils]: Spent 12.33 s on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-11-03 05:22:27,271 WARN L207 SmtUtils]: Spent 12.39 s on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-11-03 05:22:44,246 WARN L207 SmtUtils]: Spent 12.56 s on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-11-03 05:23:05,561 WARN L207 SmtUtils]: Spent 12.55 s on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-11-03 05:23:22,625 WARN L207 SmtUtils]: Spent 12.48 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-11-03 05:23:39,494 WARN L207 SmtUtils]: Spent 12.37 s on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-11-03 05:23:58,577 WARN L207 SmtUtils]: Spent 12.47 s on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-11-03 05:24:29,724 WARN L207 SmtUtils]: Spent 24.76 s on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2021-11-03 05:24:54,655 WARN L207 SmtUtils]: Spent 12.53 s on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2021-11-03 05:25:44,228 WARN L207 SmtUtils]: Spent 12.54 s on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-11-03 05:26:17,359 WARN L207 SmtUtils]: Spent 12.60 s on a formula simplification. DAG size of input: 87 DAG size of output: 80